PDF malware analysis — malicious · a37f83d001b876a2

MALICIOUS

PDF

6.4 KB Created: 2008-31-20 53:85:00 Authoring application: Scribus 1.3.3.12 (via Scribus PDF Library 1.3.3.12)

MD5: f6b58fa2a31c4be25da245d389bb577a SHA-1: 68b79d77cb3935895e8d13e7ade19cd52ede933e SHA-256: a37f83d001b876a27bdb480554c946121cc9f97565c2e0431b918711f995623e

148 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell

The PDF contains embedded JavaScript with multiple eval() calls, indicating obfuscated code execution. The ML classifier and ClamAV detection strongly suggest malicious intent, specifically a dropper. The JavaScript is likely responsible for downloading and executing a second-stage payload, as suggested by the dropper classification. The reconstructed string 'New_Script D1L8mA6m' is part of the obfuscated JavaScript.

Machine Learning

Nyx PDF Classifier malicious score 1.0000

Heuristics 5

ClamAV: Pdf.Dropper.Agent-1828866 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Dropper.Agent-1828866
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_001.js` `d9af080cc4c0371e62b52bdf8fb9babd1944eb93b236d00d2e020de1a105bf0e`	pdf-javascript-stream	PDF /JS object 13 at offset 0x392	5060 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 5 eval/decoder/string-building token(s).

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