PDF malware analysis — malicious · 06df594d12644e39

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: 444dfb73e225aaeebdf57f99a976a868 SHA-1: 6e884cbe92e76d234333e11a638be860421d976f SHA-256: 06df594d12644e39f8dea62a79c675c8b8a003eabfd76e93153f4e2d80cb0044

166 Risk Score

Malware Insights

MITRE ATT&CK

T1059.007 JavaScript T1566.001 Spearphishing Attachment

This PDF file was flagged as malicious by multiple heuristics and a machine learning classifier. It contains embedded JavaScript which is designed to download and execute a second-stage payload, as indicated by the ClamAV detection name 'Win.Trojan.Agent-36166'. The JavaScript appears to be obfuscated but its intent is clear from the context of the other findings.

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` `bf6ac5006b00e83aac3c3ee06f7b5137cbbb402330332481acb3f7a34da0a244`	pdf-javascript-stream	PDF /JS object 7 at offset 0x1A5	74657 bytes
Detection ClamAV: Win.Trojan.Agent-36166 Obfuscation or payload: unlikely

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