PDF malware analysis — malicious · 9a30655d23754616

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: ca503e88efbc5c697b7af3a0972785ef SHA-1: 2b1c85fb68f4c97b1236275a05dd742e74492162 SHA-256: 9a30655d23754616b66228131b0a0c5f2ebda4398017ceb4f5b021893e7d76f4

136 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell

The file is a PDF containing embedded JavaScript, indicated by multiple heuristic firings. ClamAV detections for 'Win.Trojan.Agent-36166' on both the PDF and an extracted artifact strongly suggest malicious intent. The embedded JavaScript is likely responsible for executing the malicious payload, aligning with the T1059.001 (PowerShell) technique, although the specific actions of the script are not detailed in the provided evidence.

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` `7d1557064915562c621a9c937d70cc6cafa40bc52b10f04e9825b46a533be5ba`	pdf-javascript-stream	PDF /JS object 7 at offset 0x1A5	74425 bytes
Detection ClamAV: Win.Trojan.Agent-36166 Obfuscation or payload: unlikely

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