PDF malware analysis — malicious · ca21eea0bcecdd24

MALICIOUS

PDF

14.7 KB Created: 2008-07-26 19:43:58 Authoring application: Scribus 1.3.3.12 (via Scribus PDF Library 1.3.3.12)

MD5: 039344a5cbde4cc66eba5067148f4127 SHA-1: c2813e1c5d449038486ee1db74f6ba9f095e30a1 SHA-256: ca21eea0bcecdd24bba36a49ec5a40c3a65a7071999908d84a99f26c826956c5

148 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

The PDF file contains embedded JavaScript with high-confidence heuristic firings for PDF eval() calls and ML classification. The JavaScript is heavily obfuscated but appears to use eval() to execute code, a common technique for downloading and running further malicious content. The ClamAV detection of 'Pdf.Exploit.Agent-36118' strongly suggests exploitation of a known PDF vulnerability.

Machine Learning

Nyx PDF Classifier malicious score 1.0000

Heuristics 5

ClamAV: Pdf.Exploit.Agent-36118 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Exploit.Agent-36118
eval() call high PDF_EVAL

eval() found — commonly used for obfuscated exploit execution
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_000.js` `f1ffddad1dc56d343d9f3436ffd3d1f505c5222d70f452eeab93ecebf666ee22`	pdf-javascript-stream	PDF /JS object 13 at offset 0x336	13495 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 3 eval/decoder/string-building token(s). Carved artifact contains 9 long base64-like blob(s).

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