PDF malware analysis — malicious · aa9b5b596de29013

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: 9ebb29ba1c53a5fa6221641ac1308ee2 SHA-1: 9da6079358379bd3c56e921c84b3f38d9972979d SHA-256: aa9b5b596de2901391dee1db915f0ee6a79b65b0c0aacee3d9693df929e6a6e2

136 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell

The PDF file was detected as malicious by ClamAV with the signature Win.Trojan.Agent-36166. Static analysis revealed embedded JavaScript, indicating the file's likely purpose is to download and execute a second-stage payload. The obfuscated nature of the JavaScript prevents a more detailed analysis of its specific actions.

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` `9832219ee7ea28126b2bbdf6110e7cac272347597c263ad1b647a13d6a5682d1`	pdf-javascript-stream	PDF /JS object 7 at offset 0x1A5	75686 bytes
Detection ClamAV: Win.Trojan.Agent-36166 Obfuscation or payload: unlikely

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