PDF malware analysis — malicious · deaf35f461fdcc7b

MALICIOUS

PDF

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

MD5: d2434b7aa8b0b44f627699843b3042d5 SHA-1: 43528776191ba83040749d5c801a47684d27b713 SHA-256: deaf35f461fdcc7ba6f30d9a6a5ff93deb089f5c552e0426bf9823fc907e9dad

158 Risk Score

Malware Insights

MITRE ATT&CK

T1204 Malicious Link

The PDF file contains embedded JavaScript and is configured with an OpenAction to trigger execution upon opening. The critical heuristic firing for CVE-2007-5659 (Collab.collectEmailInfo) indicates exploitation of a known vulnerability. The embedded JavaScript is likely intended to download and execute a second-stage payload, contributing to the malicious nature of the file.

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` `034473148dd13e653e03b090947d4130b48667e4850e1033ac6dac1afef28fe8`	pdf-javascript-stream	PDF /JS object 13 at offset 0x36B	2770 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 3 eval/decoder/string-building token(s).

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