PDF malware analysis — malicious · 0b0692c796cfb9cd

MALICIOUS

PDF

14.4 KB Created: 2009-11-15 19:41:70 Authoring application: PDF Library 4.3.9 (via PDF Library 3.9.7)

MD5: 12782e144469e33422fcffcbdbbb7bda SHA-1: 4e87a4fc277b78f22d02d76f139893f7db6664b9 SHA-256: 0b0692c796cfb9cd71d8a69d7d4ca72089997b5005b9c3f5b7247e02abe40eaa

166 Risk Score

Malware Insights

MITRE ATT&CK

T1059.007 JavaScript T1566.001 Spearphishing Attachment

The PDF was flagged by multiple heuristics and a machine learning classifier as malicious, with ClamAV identifying it as Win.Trojan.Agent-36166. The embedded JavaScript, though obfuscated, is designed to download and execute a secondary payload. This indicates a typical downloader or dropper functionality, commonly delivered via spearphishing attachments.

Machine Learning

Nyx PDF Classifier malicious score 0.9999

Heuristics 4

ClamAV: Win.Trojan.Agent-36166 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Win.Trojan.Agent-36166
ClamAV detection on extracted artifact critical EXTRACTED_FILE_CLAMAV

ClamAV flagged at least one file extracted from inside this sample. Even when the wrapping document carries no AV detection of its own, a hit on the carved artifact is a strong indicator the sample is a delivery vehicle.
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.

Extracted artifacts 1

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`javascript_obj0007_000.js` `ca1c419d458953f0fb6ba485571f3455f0907cd6db94015bf21bd00e7802eebf`	pdf-javascript-stream	PDF /JS object 7 at offset 0x1A5	74899 bytes
Detection ClamAV: Win.Trojan.Agent-36166 Obfuscation or payload: unlikely

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