PDF malware analysis — malicious · c9fc3200c789816e

MALICIOUS

PDF

2.8 KB Created: 2010-14-20 51:50:00 Authoring application: Scribus 1.3.3.12 (via Scribus PDF Library 1.3.3.12)

MD5: 8c0f5099246bf826b52a7430bb8eab7c SHA-1: cde08e2ffc2a1853e5e6a8657c6dfb08085614f5 SHA-256: c9fc3200c789816e02d2fb620aa593dbaef5836b42a37119b2ee41c0ff85ea2e

158 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.001 Malicious Link

The PDF file contains embedded JavaScript triggered by the OpenAction, which is a known method for exploiting PDF reader vulnerabilities. The critical heuristic firing for CVE-2007-5659 (Collab.collectEmailInfo) indicates a specific exploit attempt. The presence of JavaScript and the unescape() call suggest obfuscated code designed to download and execute a secondary payload, typical of a malicious dropper.

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)
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` `078ce8ce54fccffd9bf8d5072456f28d83ddf00598657865577ed305915c8dbc`	pdf-javascript-stream	PDF /JS object 13 at offset 0x363	3651 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 3 eval/decoder/string-building token(s).

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