PDF malware analysis — malicious · f49de4c0ee6b062e

MALICIOUS

PDF

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

MD5: f4376efc04f1175731f0046d245e3f2f SHA-1: 866706b40a1764240217cce8ead4fa670a1d527e SHA-256: f49de4c0ee6b062ea480d695dac855d9e8f9cf3b63467df919a8e031a8617ff8

88 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1059.007 JavaScript

This PDF contains obfuscated JavaScript, indicated by multiple heuristic firings including PDF_JAVASCRIPT, PDF_JS, and PDF_EVAL. The ML classifier strongly flagged it as malicious. The embedded JavaScript stream, named 'javascript_obj0013_001.js', is likely responsible for executing further malicious code, such as downloading a second-stage payload. The obfuscation makes it difficult to determine the exact payload or delivery mechanism without further analysis.

Machine Learning

Nyx PDF Classifier malicious score 1.0000

Heuristics 4

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` `9eced1107d11ad96a3c395a8f1b1be85bbbd54ba67fa050a351ef2347f48ea86`	pdf-javascript-stream	PDF /JS object 13 at offset 0x38A	5807 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 5 eval/decoder/string-building token(s).

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