PDF malware analysis — malicious · 06d5af0e37ebf2b9

MALICIOUS

PDF

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

MD5: 2a3226a8e2acd3b31acf4627bf2d6ce5 SHA-1: 316c00c313c124e92ca53803692f799b11493cee SHA-256: 06d5af0e37ebf2b9360dac599a01395e74aad0244d10e52d00bc7ac2f22553df

166 Risk Score

Malware Insights

MITRE ATT&CK

T1059.007 JavaScript T1566.001 Spearphishing Attachment

The PDF contains embedded JavaScript, flagged by multiple heuristics and a machine learning classifier as malicious. ClamAV detection of 'Win.Trojan.Agent-36166' further confirms its malicious nature. The JavaScript is designed to download and execute a secondary payload, indicating a typical downloader or dropper functionality.

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` `21bd4c896b9d6ad532e23f23e85ce5965d3b8b7f6825f34efcc54ba32d63682e`	pdf-javascript-stream	PDF /JS object 7 at offset 0x1A5	75158 bytes
Detection ClamAV: Win.Trojan.Agent-36166 Obfuscation or payload: unlikely

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