PDF malware analysis — malicious · 9fe02f6149ba521b

MALICIOUS

PDF

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

MD5: e3b86145de00ebfab3e3159d24b81104 SHA-1: 0331de74370265a15c9b1b8b4f14185b4bd31f9a SHA-256: 9fe02f6149ba521babffdb6c6a2886474470ec99beacadd3481dc753ce11238c

220 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 JavaScript/JScript T1204.002 Malicious File

The PDF file contains embedded JavaScript triggered by an OpenAction, a common technique for exploiting PDF reader vulnerabilities. The critical CVE-2007-5659 heuristic firing indicates the use of the Collab.collectEmailInfo method, which is known to be exploitable. The embedded JavaScript stream, named 'javascript_obj0012_001.js', is likely responsible for further malicious actions, such as downloading and executing a second-stage payload. The ClamAV detection further supports its malicious nature.

Heuristics 7

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.
ClamAV: Pdf.Dropper.Agent-1828867 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Dropper.Agent-1828867
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
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_obj0012_001.js` `46cd8001158c5486e22c37d6c128a9726c123eb59ebd3ae4469f349453f4981d`	pdf-javascript-stream	PDF /JS object 12 at offset 0x372	3244 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 3 eval/decoder/string-building token(s).

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