PDF malware analysis — malicious · faaf97f50993b37b

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: b9c390fc2ca6229877e0d8ea17734199 SHA-1: 441c08f8356e4f0cb018b62619091ed8665ca524 SHA-256: faaf97f50993b37b1b0ffa156c9393ceec7f3cbd0e32f0729fb85e78026b5c71

158 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 JavaScript/JScript T1204.002 Malicious File

The PDF file contains embedded JavaScript and is configured with an OpenAction trigger, indicating an attempt to automatically execute code upon opening. The critical CVE-2007-5659 heuristic firing, related to Collab.collectEmailInfo, strongly suggests exploitation of a known vulnerability in Adobe Reader. The embedded JavaScript stream, identified as 'javascript_obj0013_001.js', likely contains the exploit code. The primary intent appears to be the execution of a secondary payload via the exploited vulnerability.

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` `b544f714f97e4f8e61b229ccf8f8223d744a3c0cc3d75bd6cde12976916ed526`	pdf-javascript-stream	PDF /JS object 13 at offset 0x368	2750 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 3 eval/decoder/string-building token(s).

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