PDF malware analysis — malicious · 487267a8ba6bfabf

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: e7232d51a776775dc422247015006e0d SHA-1: d8368cc2949651a535abaac0254a75faba75bd9d SHA-256: 487267a8ba6bfabf546e8f981b5dd51b646eb103b06c7c79e66eea67ccb5f6ae

166 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

The PDF file was flagged by multiple heuristics, including a critical ClamAV detection for 'Win.Trojan.Agent-36166'. Embedded JavaScript was also detected, indicating an attempt to execute malicious code. The ML classifier strongly supports a malicious verdict. The primary attack vector appears to be the exploitation of a PDF vulnerability through embedded JavaScript, leading to the download and execution of 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` `769ea589daec66635bee118795428cacf2146315da53011a5642c4acb8d09ef0`	pdf-javascript-stream	PDF /JS object 7 at offset 0x1A5	75177 bytes
Detection ClamAV: Win.Trojan.Agent-36166 Obfuscation or payload: unlikely

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