PDF malware analysis — malicious · e01ea51e1d72be5e

MALICIOUS

PDF

4.7 KB Created: 2008-08-06 01:42:27 Authoring application: Scribus 1.3.3.12 (via Scribus PDF Library 1.3.3.12)

MD5: d46985d032f270b65e288c6b02a15bb5 SHA-1: 49b921fabab78152e14c0276056b999c757be60a SHA-256: e01ea51e1d72be5ef30e51009a3fe923533e847fae1a97495cebfca8d0f9cf51

88 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell

The PDF document contains embedded JavaScript, indicated by the PDF_JAVASCRIPT and PDF_JS heuristics. The presence of an eval() call within the decoded JavaScript stream (PDF_EVAL) strongly suggests the execution of arbitrary code. The ML classifier also flagged this PDF as malicious with high confidence. The JavaScript is likely responsible for downloading and executing a second-stage payload, though the exact mechanism is obfuscated.

Machine Learning

Nyx PDF Classifier malicious score 1.0000

Heuristics 4

eval() call high PDF_EVAL

eval() found — commonly used for obfuscated exploit execution (matched inside decoded stream)
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` `8846b015d6af901a6052dc3fe43a6dc48a6dab4db01babd7d3fc943c08c519d0`	pdf-javascript-stream	PDF /JS object 13 at offset 0x363	6387 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 4 eval/decoder/string-building token(s).

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