PDF malware analysis — malicious · 9137954331739dcc

MALICIOUS

PDF

3.9 KB Created: 2008-08-03 07:51:49 -09:03 Authoring application: Adobe InDesign CS3 (5.0) (via Adobe PDF Library 8.1)

MD5: a5465a742969608ffd02fb1a8de3353f SHA-1: f2a9170030b999834018203f468ea9bcf8e444c0 SHA-256: 9137954331739dcc5470e9a6d2b2ae3450fbc0a3f8a3dce3fb374da207d055ff

108 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell

The PDF was flagged as malicious by ML classifiers and ClamAV, specifically identified as Pdf.Dropper.Agent-7282881-0. It contains embedded JavaScript, indicated by heuristic firings and the presence of an extracted javascript_obj0013_001.js file. This JavaScript is likely responsible for executing a secondary payload, a common technique for PDF-based malware delivery.

Machine Learning

Nyx PDF Classifier malicious score 1.0000

Heuristics 4

ClamAV: Pdf.Dropper.Agent-7282881-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Dropper.Agent-7282881-0
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` `13ffb6462330e4945d229af55ccbc635d806b04f4be6562c6f50c3340d89d5a6`	pdf-javascript-stream	PDF /JS object 13 at offset 0x35B	4626 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 eval/decoder/string-building token(s). Carved artifact contains 3 long base64-like blob(s).

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