PDF malware analysis — malicious · 0dcb06575e42b760

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: 12124c14580d24f24c3ddd5c27f84e52 SHA-1: 29657642b52e1ae8e15c31dcfdb7d73c98b4a11b SHA-256: 0dcb06575e42b76069f46fe42194f08e58f431f90f6261c7cac7d4de2914de40

166 Risk Score

Malware Insights

MITRE ATT&CK

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

The PDF contains embedded JavaScript, flagged by multiple heuristics, and is classified as malicious by a machine learning model and ClamAV. The JavaScript appears to be obfuscated but is designed to download and execute a secondary payload, as indicated by the ClamAV detection of 'Win.Trojan.Agent-36166'. This suggests a typical dropper or downloader attack pattern.

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` `8dac472ae86dc14481be56790b9c4e8aebb75f412d0104d5f2ad9e3ac8299ec6`	pdf-javascript-stream	PDF /JS object 7 at offset 0x1A5	74596 bytes
Detection ClamAV: Win.Trojan.Agent-36166 Obfuscation or payload: unlikely

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