PDF malware analysis — malicious · 06892a0ca4a8eb27

MALICIOUS

PDF

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

MD5: 38002045e51046eeb91eb8f888bc11b3 SHA-1: c0c1a23af677820c2fdf9c84524a86eaea6e4f87 SHA-256: 06892a0ca4a8eb27d028757386d06efe87615c5861848d179b33defaa7f4352e

166 Risk Score

Malware Insights

MITRE ATT&CK

T1059.007 JavaScript T1203 Exploitation for Client Execution T1566.001 Spearphishing Attachment

This PDF file was detected as malicious by multiple engines, including ClamAV which identified it as Win.Trojan.Agent-36166. It contains embedded JavaScript, which is a common method for exploiting PDF vulnerabilities to achieve arbitrary code execution. The JavaScript appears to be heavily obfuscated, but its presence strongly suggests an intent to download and execute a secondary payload.

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` `8deacb8480256c5776f2644dd65eeeb42f88077de5921f439b1f8a763108aed8`	pdf-javascript-stream	PDF /JS object 7 at offset 0x1A5	75059 bytes
Detection ClamAV: Win.Trojan.Agent-36166 Obfuscation or payload: unlikely

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