PDF malware analysis — malicious · 2c8cebf250fd6409

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: b917c8351ae42b53d6448f36cf0aad9d SHA-1: 324995fefe086e8e24df1b27e82b72f75d015cee SHA-256: 2c8cebf250fd64096f7b7bb637d12da59be361525c44866b36a70f1404fcdbb4

136 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

The file is identified as malicious by ClamAV with the signature Win.Trojan.Agent-36166. Static analysis detected embedded JavaScript within the PDF, indicating an attempt to exploit vulnerabilities. The JavaScript is likely responsible for downloading and executing a second-stage payload, though its exact function is obscured by its size and potential obfuscation.

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` `4f3784058ccb556d1c573763b5c82b400987edb126e90fa6d8a2868d570b85cf`	pdf-javascript-stream	PDF /JS object 7 at offset 0x1A5	75096 bytes
Detection ClamAV: Win.Trojan.Agent-36166 Obfuscation or payload: unlikely

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