PDF malware analysis — malicious · f68609a76288ab9c

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: 64d5419e262b4b5329f332a605cb5910 SHA-1: dac17e65ff9a74ba3580e38b4e3bf7be8a3594d5 SHA-256: f68609a76288ab9c5a6f9f3442ef03a9518cad6562eebb1eccbf3ba7ae490390

196 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File T1566.002 Spearphishing Attachment

The PDF file contains embedded JavaScript triggered by an OpenAction, indicating an attempt to exploit a vulnerability. The critical heuristic firing for CVE-2007-5659 (Collab.collectEmailInfo) strongly suggests exploitation of this known PDF vulnerability. The embedded JavaScript stream, identified as suspicious, likely contains obfuscated code designed to download and execute a secondary payload. The file's structure and heuristic firings point towards a malicious PDF designed for exploitation.

Heuristics 6

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)
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)
Suspicious extracted artifact high 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.
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.

Extracted artifacts 1

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`javascript_obj0013_001.js` `26745183a2fc0f9e34b031f5878d3ad18690fbc22f493bc58828a8c69f9af83a`	pdf-javascript-stream	PDF /JS object 13 at offset 0x36B	2646 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 3 eval/decoder/string-building token(s).

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