PDF malware analysis — malicious · 6d8c307230efa35b

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: dd8052f8ff2b1762665abbac2839f1c4 SHA-1: ec9a1b6c15210b125bbfcad4f0333fed239a5ccd SHA-256: 6d8c307230efa35b935c85ab5daae69b108aeb8652013f74c53e15dc47837974

166 Risk Score

Malware Insights

MITRE ATT&CK

T1059.007 JavaScript T1566.001 Spearphishing Attachment

The PDF contains embedded JavaScript which is obfuscated but appears to download and execute a file. The ClamAV detection 'Win.Trojan.Agent-36166' and the ML classifier strongly indicate malicious intent. The JavaScript's obfuscated nature suggests an attempt to evade detection, likely to download and run 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` `de0fdce1f78097d2234758b5daf23fb12bae1daca82aad97e1ef002164c5545d`	pdf-javascript-stream	PDF /JS object 7 at offset 0x1A5	74780 bytes
Detection ClamAV: Win.Trojan.Agent-36166 Obfuscation or payload: unlikely

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