PDF malware analysis — malicious · fed7ce1720bd3b3c

MALICIOUS

PDF

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

MD5: f5a5cf0d3d146c36cc2a3f6b1a2bd98e SHA-1: e7256ff707a837b448e87b66efc91df9675e7379 SHA-256: fed7ce1720bd3b3c482481c2652eb214fa2f6dff71834b01d6bdc7b4c34fad44

148 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 JavaScript/JScript T1204.002 Malicious File

The PDF contains embedded JavaScript that utilizes eval() calls, indicating an attempt to execute arbitrary code. The ML classifier and ClamAV detection strongly suggest malicious intent. The JavaScript appears to be heavily obfuscated, but the presence of eval() and the overall structure point towards a downloader or exploit execution mechanism. The reconstructed eval string suggests a complex, obfuscated JavaScript execution chain.

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` `d187a175672b0074e7f8aadaae2203e61b5f1a54728795cd0bab9aefc52fdb77`	pdf-javascript-stream	PDF /JS object 13 at offset 0x336	13385 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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