PDF malware analysis — malicious · a92b901b3d2529c6

MALICIOUS

PDF

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

MD5: b72a1b96aebf3e3bbb0f1ffbb925e4c8 SHA-1: 483d5632cd4697c882027c3a65aca8b17974a1bd SHA-256: a92b901b3d2529c6460bd9945818f9b62ba77ed90e13a2c371f55ac3c28c633b

148 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

The PDF file contains embedded JavaScript that utilizes an eval() function, a common technique for obfuscating malicious code. The ML classifier and ClamAV detection strongly indicate malicious intent, specifically flagging it as Pdf.Exploit.Agent-36118. The embedded JavaScript is designed to execute arbitrary code, likely downloading and executing a secondary payload, which is a common attack pattern for this type of exploit.

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` `a5758b880a6675463f56dae49208e7ae52d9a5fec4fdfc3325d52c1bbb8d1a9a`	pdf-javascript-stream	PDF /JS object 13 at offset 0x336	13556 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 3 eval/decoder/string-building token(s). Carved artifact contains 1 long base64-like blob(s).

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