PDF malware analysis — malicious · d6cd965870d105e4

MALICIOUS

PDF

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

MD5: cb1e30698ba13c126d703051af2c2096 SHA-1: 69ad573a2f3c66a25742db328a3b027396fb8541 SHA-256: d6cd965870d105e4517f62805bd9a082f09a65aa95fb585c286c26cb913d8b0f

148 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1059.007 JavaScript

The PDF contains embedded JavaScript with multiple heuristic firings indicating malicious intent, including PDF_JAVASCRIPT, PDF_JS, and PDF_EVAL. The ML classifier and ClamAV detection strongly suggest this is a dropper. The embedded JavaScript is obfuscated but appears to use eval() to execute code, likely downloading and executing a second-stage payload. The presence of a large JavaScript object and the ML_NYX_PDF_MALICIOUS score contribute to the high confidence.

Machine Learning

Nyx PDF Classifier malicious score 1.0000

Heuristics 5

ClamAV: Pdf.Dropper.Agent-1828997 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Dropper.Agent-1828997
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` `982a0e4b27a8a2ea6597be9d409edec12ce8b306389d13037de9f2a9bb21a46a`	pdf-javascript-stream	PDF /JS object 13 at offset 0x336	9450 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 2 eval/decoder/string-building token(s). Carved artifact contains 1 long base64-like blob(s).

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