Windows Analysis Report
Usc credit Union Bank Letter- copy.pdf

Overview

General Information

Sample name: Usc credit Union Bank Letter- copy.pdf
Analysis ID: 1528502
MD5: b0c27a59f6b7246a6ccd99bd675d66f6
SHA1: 478c5f6502d7e529e13a5a6c902eb00765dd594a
SHA256: 93235fca9fbe77a4dc06e55dbc89b657a852a19045d1c04b7d7df7f09c6adb36
Infos:

Detection

Score: 2
Range: 0 - 100
Whitelisted: false
Confidence: 80%

Signatures

IP address seen in connection with other malware
Potential document exploit detected (performs DNS queries)
Potential document exploit detected (performs HTTP gets)
Potential document exploit detected (unknown TCP traffic)
Uses a known web browser user agent for HTTP communication

Classification

Source: global traffic DNS query: name: x1.i.lencr.org
Source: global traffic TCP traffic: 192.168.2.12:49730 -> 23.56.162.185:443
Source: global traffic TCP traffic: 192.168.2.12:49730 -> 23.56.162.185:443
Source: global traffic TCP traffic: 192.168.2.12:49730 -> 23.56.162.185:443
Source: global traffic TCP traffic: 192.168.2.12:49730 -> 23.56.162.185:443
Source: global traffic TCP traffic: 192.168.2.12:49730 -> 23.56.162.185:443
Source: global traffic TCP traffic: 192.168.2.12:49730 -> 23.56.162.185:443
Source: global traffic TCP traffic: 192.168.2.12:49730 -> 23.56.162.185:443
Source: global traffic TCP traffic: 192.168.2.12:49730 -> 23.56.162.185:443
Source: global traffic TCP traffic: 192.168.2.12:49730 -> 23.56.162.185:443
Source: global traffic TCP traffic: 192.168.2.12:49730 -> 23.56.162.185:443
Source: global traffic TCP traffic: 192.168.2.12:49730 -> 23.56.162.185:443
Source: global traffic TCP traffic: 192.168.2.12:49730 -> 23.56.162.185:443
Source: global traffic TCP traffic: 192.168.2.12:49730 -> 23.56.162.185:443
Source: global traffic TCP traffic: 23.56.162.185:443 -> 192.168.2.12:49730
Source: global traffic TCP traffic: 192.168.2.12:49730 -> 23.56.162.185:443
Source: global traffic TCP traffic: 192.168.2.12:49730 -> 23.56.162.185:443
Source: global traffic TCP traffic: 23.56.162.185:443 -> 192.168.2.12:49730
Source: global traffic TCP traffic: 23.56.162.185:443 -> 192.168.2.12:49730
Source: global traffic TCP traffic: 192.168.2.12:49730 -> 23.56.162.185:443
Source: global traffic TCP traffic: 23.56.162.185:443 -> 192.168.2.12:49730
Source: global traffic TCP traffic: 23.56.162.185:443 -> 192.168.2.12:49730
Source: global traffic TCP traffic: 192.168.2.12:49730 -> 23.56.162.185:443
Source: global traffic TCP traffic: 192.168.2.12:49730 -> 23.56.162.185:443
Source: global traffic TCP traffic: 23.56.162.185:443 -> 192.168.2.12:49730
Source: global traffic TCP traffic: 192.168.2.12:49730 -> 23.56.162.185:443
Source: global traffic TCP traffic: 23.56.162.185:443 -> 192.168.2.12:49730
Source: global traffic TCP traffic: 192.168.2.12:49730 -> 23.56.162.185:443
Source: global traffic TCP traffic: 23.56.162.185:443 -> 192.168.2.12:49730
Source: global traffic TCP traffic: 23.56.162.185:443 -> 192.168.2.12:49730
Source: global traffic TCP traffic: 192.168.2.12:49730 -> 23.56.162.185:443
Source: global traffic TCP traffic: 192.168.2.12:49730 -> 23.56.162.185:443
Source: global traffic TCP traffic: 192.168.2.12:49730 -> 23.56.162.185:443
Source: global traffic TCP traffic: 23.56.162.185:443 -> 192.168.2.12:49730
Source: global traffic TCP traffic: 192.168.2.12:49730 -> 23.56.162.185:443
Source: Joe Sandbox View IP Address: 23.56.162.185 23.56.162.185
Source: global traffic HTTP traffic detected: GET /onboarding/smskillreader.txt HTTP/1.1Host: armmf.adobe.comConnection: keep-aliveAccept-Language: en-US,en;q=0.9User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) ReaderServices/23.6.20320 Chrome/105.0.0.0 Safari/537.36Sec-Fetch-Site: same-originSec-Fetch-Mode: no-corsSec-Fetch-Dest: emptyAccept-Encoding: gzip, deflate, brIf-None-Match: "78-5faa31cce96da"If-Modified-Since: Mon, 01 May 2023 15:02:33 GMT
Source: unknown TCP traffic detected without corresponding DNS query: 23.56.162.185
Source: unknown TCP traffic detected without corresponding DNS query: 23.56.162.185
Source: unknown TCP traffic detected without corresponding DNS query: 23.56.162.185
Source: unknown TCP traffic detected without corresponding DNS query: 23.56.162.185
Source: unknown TCP traffic detected without corresponding DNS query: 23.56.162.185
Source: unknown TCP traffic detected without corresponding DNS query: 23.56.162.185
Source: unknown TCP traffic detected without corresponding DNS query: 23.56.162.185
Source: unknown TCP traffic detected without corresponding DNS query: 23.56.162.185
Source: unknown TCP traffic detected without corresponding DNS query: 23.56.162.185
Source: unknown TCP traffic detected without corresponding DNS query: 23.56.162.185
Source: unknown TCP traffic detected without corresponding DNS query: 23.56.162.185
Source: unknown TCP traffic detected without corresponding DNS query: 23.56.162.185
Source: unknown UDP traffic detected without corresponding DNS query: 1.1.1.1
Source: global traffic HTTP traffic detected: GET /onboarding/smskillreader.txt HTTP/1.1Host: armmf.adobe.comConnection: keep-aliveAccept-Language: en-US,en;q=0.9User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) ReaderServices/23.6.20320 Chrome/105.0.0.0 Safari/537.36Sec-Fetch-Site: same-originSec-Fetch-Mode: no-corsSec-Fetch-Dest: emptyAccept-Encoding: gzip, deflate, brIf-None-Match: "78-5faa31cce96da"If-Modified-Since: Mon, 01 May 2023 15:02:33 GMT
Source: global traffic DNS traffic detected: DNS query: x1.i.lencr.org
Source: 2D85F72862B55C4EADD9E66E06947F3D0.2.dr String found in binary or memory: http://x1.i.lencr.org/
Source: ReaderMessages.0.dr String found in binary or memory: https://www.adobe.co
Source: unknown Network traffic detected: HTTP traffic on port 443 -> 49730
Source: unknown Network traffic detected: HTTP traffic on port 49730 -> 443
Source: classification engine Classification label: clean2.winPDF@14/43@1/1
Source: C:\Program Files\Adobe\Acrobat DC\Acrobat\Acrobat.exe File created: C:\Users\user\AppData\Local\Adobe\Acrobat\DC\SharedDataEvents-journal Jump to behavior
Source: C:\Program Files\Adobe\Acrobat DC\Acrobat\Acrobat.exe File created: C:\Users\user\AppData\Local\Temp\acrobat_sbx\NGL\NGLClient_AcrobatReader123.6.20320.6 2024-10-07 18-19-51-434.log Jump to behavior
Source: C:\Program Files\Adobe\Acrobat DC\Acrobat\Acrobat.exe Key opened: HKEY_CURRENT_USER\Software\Policies\Microsoft\SystemCertificates\CA Jump to behavior
Source: unknown Process created: C:\Program Files\Adobe\Acrobat DC\Acrobat\Acrobat.exe "C:\Program Files\Adobe\Acrobat DC\Acrobat\Acrobat.exe" "C:\Users\user\Desktop\Usc credit Union Bank Letter- copy.pdf"
Source: C:\Program Files\Adobe\Acrobat DC\Acrobat\Acrobat.exe Process created: C:\Program Files\Adobe\Acrobat DC\Acrobat\acrocef_1\AcroCEF.exe "C:\Program Files\Adobe\Acrobat DC\Acrobat\acrocef_1\AcroCEF.exe" --backgroundcolor=16777215
Source: C:\Program Files\Adobe\Acrobat DC\Acrobat\acrocef_1\AcroCEF.exe Process created: C:\Program Files\Adobe\Acrobat DC\Acrobat\acrocef_1\AcroCEF.exe "C:\Program Files\Adobe\Acrobat DC\Acrobat\acrocef_1\AcroCEF.exe" --type=utility --utility-sub-type=network.mojom.NetworkService --lang=en-US --service-sandbox-type=none --log-severity=disable --user-agent-product="ReaderServices/23.6.20320 Chrome/105.0.0.0" --lang=en-US --log-file="C:\Program Files\Adobe\Acrobat DC\Acrobat\acrocef_1\debug.log" --mojo-platform-channel-handle=2108 --field-trial-handle=1556,i,8437841704339123093,10600651356444801376,131072 --disable-features=BackForwardCache,CalculateNativeWinOcclusion,WinUseBrowserSpellChecker /prefetch:8
Source: C:\Program Files\Adobe\Acrobat DC\Acrobat\Acrobat.exe Process created: unknown unknown Jump to behavior
Source: C:\Program Files\Adobe\Acrobat DC\Acrobat\Acrobat.exe Process created: C:\Program Files\Adobe\Acrobat DC\Acrobat\acrocef_1\AcroCEF.exe "C:\Program Files\Adobe\Acrobat DC\Acrobat\acrocef_1\AcroCEF.exe" --backgroundcolor=16777215 Jump to behavior
Source: C:\Program Files\Adobe\Acrobat DC\Acrobat\acrocef_1\AcroCEF.exe Process created: unknown unknown Jump to behavior
Source: C:\Program Files\Adobe\Acrobat DC\Acrobat\acrocef_1\AcroCEF.exe Process created: unknown unknown Jump to behavior
Source: C:\Program Files\Adobe\Acrobat DC\Acrobat\acrocef_1\AcroCEF.exe Process created: C:\Program Files\Adobe\Acrobat DC\Acrobat\acrocef_1\AcroCEF.exe "C:\Program Files\Adobe\Acrobat DC\Acrobat\acrocef_1\AcroCEF.exe" --type=utility --utility-sub-type=network.mojom.NetworkService --lang=en-US --service-sandbox-type=none --log-severity=disable --user-agent-product="ReaderServices/23.6.20320 Chrome/105.0.0.0" --lang=en-US --log-file="C:\Program Files\Adobe\Acrobat DC\Acrobat\acrocef_1\debug.log" --mojo-platform-channel-handle=2108 --field-trial-handle=1556,i,8437841704339123093,10600651356444801376,131072 --disable-features=BackForwardCache,CalculateNativeWinOcclusion,WinUseBrowserSpellChecker /prefetch:8 Jump to behavior
Source: C:\Program Files\Adobe\Acrobat DC\Acrobat\acrocef_1\AcroCEF.exe Process created: unknown unknown Jump to behavior
Source: C:\Program Files\Adobe\Acrobat DC\Acrobat\acrocef_1\AcroCEF.exe Process created: unknown unknown Jump to behavior
Source: C:\Program Files\Adobe\Acrobat DC\Acrobat\acrocef_1\AcroCEF.exe Process created: unknown unknown Jump to behavior
Source: C:\Program Files\Adobe\Acrobat DC\Acrobat\acrocef_1\AcroCEF.exe Process created: unknown unknown Jump to behavior
Source: C:\Program Files\Adobe\Acrobat DC\Acrobat\acrocef_1\AcroCEF.exe Process created: unknown unknown Jump to behavior
Source: C:\Program Files\Adobe\Acrobat DC\Acrobat\acrocef_1\AcroCEF.exe Process created: unknown unknown Jump to behavior
Source: Window Recorder Window detected: More than 3 window changes detected
Source: Usc credit Union Bank Letter- copy.pdf Initial sample: PDF keyword /JS count = 0
Source: Usc credit Union Bank Letter- copy.pdf Initial sample: PDF keyword /JavaScript count = 0
Source: Usc credit Union Bank Letter- copy.pdf Initial sample: PDF keyword stream count = 104
Source: Usc credit Union Bank Letter- copy.pdf Initial sample: PDF keyword /EmbeddedFile count = 0
Source: Usc credit Union Bank Letter- copy.pdf Initial sample: PDF keyword endstream count = 104
Source: Usc credit Union Bank Letter- copy.pdf Initial sample: PDF keyword obj count = 107
Source: C:\Program Files\Adobe\Acrobat DC\Acrobat\Acrobat.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Program Files\Adobe\Acrobat DC\Acrobat\Acrobat.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Program Files\Adobe\Acrobat DC\Acrobat\acrocef_1\AcroCEF.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Program Files\Adobe\Acrobat DC\Acrobat\acrocef_1\AcroCEF.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Program Files\Adobe\Acrobat DC\Acrobat\acrocef_1\AcroCEF.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Program Files\Adobe\Acrobat DC\Acrobat\acrocef_1\AcroCEF.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Program Files\Adobe\Acrobat DC\Acrobat\acrocef_1\AcroCEF.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Program Files\Adobe\Acrobat DC\Acrobat\acrocef_1\AcroCEF.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
  • No. of IPs < 25%
  • 25% < No. of IPs < 50%
  • 50% < No. of IPs < 75%
  • 75% < No. of IPs