PDF malware analysis — malicious · b577847894ecb707

MALICIOUS

PDF

16.2 KB Created: 2007-12-35 21:45:26 Authoring application: Adobe

MD5: 3209795df16f3e229479a709627e3cea SHA-1: e58e42d46daf4a5eb0128ba13888ab0ff683b2d2 SHA-256: b577847894ecb7074775b229484eb43ac521048f8a3605640590d87bc53fd8df

148 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 JavaScript

The PDF file was flagged by multiple heuristics, including PDF_JAVASCRIPT, PDF_JS, and PDF_EVAL, indicating the presence and execution of JavaScript code. The ML classifier and ClamAV detection strongly suggest malicious intent, specifically identifying it as a dropper. The embedded JavaScript, particularly the eval() call, is likely responsible for downloading and executing a second-stage payload. The truncated document body prevents a more specific analysis of the lure.

Machine Learning

Nyx PDF Classifier malicious score 0.9999

Heuristics 5

ClamAV: Pdf.Dropper.Agent-1551401 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Dropper.Agent-1551401
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 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`javascript_obj0032_000.js` `7fcef2cdb117fa9ab693d09683a952fcd47f4e36e01094686f3d314c873a799a`	pdf-javascript-stream	PDF /JS object 32 at offset 0x3A8	1496421 bytes
`javascript_obj0034_001.js` `d797de515dac4f8369b71edf86d0fc9aa8fe1224d8f9d3f1eea8a19a1f23bfc7`	pdf-javascript-stream	PDF /JS object 34 at offset 0x3DED	332 bytes
`javascript_obj0036_002.js` `351349db1f2c462951d107c63f395d2e3d546cbac252089bc55d7cd7501a396b`	pdf-javascript-stream	PDF /JS object 36 at offset 0x80	426 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 eval/decoder/string-building token(s).

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