PDF malware analysis — malicious · cabdfb6f32ce0a4a

MALICIOUS

PDF

2.7 KB Created: 2008-08-06 01:42:27 Authoring application: Scribus 1.3.3.12 (via Scribus PDF Library 1.3.3.12)

MD5: 04958fc4a0d7dd91f048f1225404c83d SHA-1: 93d186c03f6763c931a73b6b76d49c36a5c24361 SHA-256: cabdfb6f32ce0a4a6b7a20f25bdf12bdc21c310a9b9fddcd5b20fe456383885c

278 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.001 Malicious Link

The PDF file contains embedded JavaScript and is configured with an OpenAction to trigger script execution upon opening. The 'CVE_2007_5659' heuristic firing indicates exploitation of a known vulnerability (Collab.collectEmailInfo) often used for arbitrary code execution. The presence of an extracted JavaScript file further supports the malicious intent. The ClamAV detection confirms the file is recognized as malware, specifically 'Win.Trojan.Agent-34667'.

Heuristics 8

Collab.collectEmailInfo — CVE-2007-5659 critical CVE exact CVE_2007_5659

PDF JavaScript calls Collab.collectEmailInfo — CVE-2007-5659 is a buffer overflow in Adobe Reader triggered by a long argument or heap-sprayed message field passed to Collab.collectEmailInfo(). Part of a series of Acrobat JS API exploits. (matched in decompressed stream)
ClamAV: Win.Trojan.Agent-34667 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Win.Trojan.Agent-34667
ClamAV detection on extracted artifact critical EXTRACTED_FILE_CLAMAV

ClamAV flagged at least one file extracted from inside this sample. Even when the wrapping document carries no AV detection of its own, a hit on the carved artifact is a strong indicator the sample is a delivery vehicle.
OpenAction trigger high PDF_OPENACTION

PDF has an /OpenAction — code runs automatically when opened
unescape() call high PDF_UNESCAPE

unescape() found — often used to decode shellcode in PDF JS exploits (matched inside decoded stream)
JavaScript action low PDF_JAVASCRIPT

PDF contains a /JavaScript action. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
Embedded JS stream low PDF_JS

PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
Suspicious extracted artifact info EXTRACTED_FILE_STATIC_TRIAGE

One or more files extracted from inside this sample matched static suspicious-content checks such as script obfuscation, encoded payload blobs, packed data, or execution/download terms.

Extracted artifacts 1

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`javascript_obj0013_001.js` `75e3418f2052654bdc30915a2dcc06bb38470fe781854cf71f8a918df671c77a`	pdf-javascript-stream	PDF /JS object 13 at offset 0x369	2652 bytes
Detection ClamAV: Win.Trojan.Agent-34667 Obfuscation or payload: likely Carved artifact contains 3 eval/decoder/string-building token(s).

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