PDF malware analysis — malicious · 4d639c316edd655f

MALICIOUS

PDF

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

MD5: 4feb90bd6c7eec38dd4f011fe320b179 SHA-1: fc155b107b7f03e3e1dc6efb84dee2b5412abe3a SHA-256: 4d639c316edd655f3da13e61489109ae98327eb0be6b80039f408c30197ae456

196 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 JavaScript/JScript T1566.002 Spearphishing Attachment T1204.002 Malicious File

The PDF file contains embedded JavaScript triggered by the OpenAction, exploiting CVE-2007-5659 via the Collab.collectEmailInfo method. The embedded JavaScript stream, named 'javascript_obj0012_001.js', is obfuscated and likely responsible for downloading and executing a secondary payload. The presence of JavaScript actions and the specific exploit signature strongly indicate a malicious intent to compromise the user's system.

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.
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
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_obj0012_001.js` `5147a212aee61b7020cfedd9abc66fd33eeab09af8ba1ac8d4aa2113c77086fc`	pdf-javascript-stream	PDF /JS object 12 at offset 0x32D	1991 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 3 eval/decoder/string-building token(s).

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