PDF malware analysis — malicious · f046ab6d1df1434c

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: eca81753e4c566cc59aaec23e1fa7c63 SHA-1: 6c9f9379007a5e5506cc3dd85dc4768a550bdbf4 SHA-256: f046ab6d1df1434cb9d14da2cf093e8cd5edd0f3fcdaf29ccfad669f48296a65

166 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 JavaScript/JScript

The PDF was flagged by multiple heuristics, including a critical ClamAV detection identifying it as Win.Trojan.Agent-36166. An embedded JavaScript stream was also detected, indicating the likely execution of malicious code. The ML classifier strongly supports the malicious verdict. The document body was unreadable, but the presence of JavaScript and the ClamAV detection strongly suggest this PDF is designed to deliver a malicious 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` `4b37539f750ec3a4c5f5faeb4ad40fcf73eb4a09b7568aed1c79343cecf8203f`	pdf-javascript-stream	PDF /JS object 7 at offset 0x1A5	74196 bytes
Detection ClamAV: Win.Trojan.Agent-36166 Obfuscation or payload: unlikely

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