PDF malware analysis — malicious · 271e6b7cf9329020

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: 4b7838808b6a1cdb451262169bbdb592 SHA-1: 3fed67e262bf0572db64ab7aec0b22bcbcc421a5 SHA-256: 271e6b7cf932902021784d4341a999f2730b201291405b983e18b697e2767fea

196 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 critical CVE-2007-5659 heuristic firing indicates the use of the Collab.collectEmailInfo method, a known vector for exploiting vulnerabilities in older PDF readers. The embedded JavaScript stream, identified as javascript_obj0013_001.js, likely contains obfuscated code intended to exploit this vulnerability, leading to arbitrary code execution.

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` `5cd1045a8a2795ff1403810e69b9ee8833bb45d6000029365849fa8849712b80`	pdf-javascript-stream	PDF /JS object 13 at offset 0x366	2715 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 3 eval/decoder/string-building token(s).

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