PDF / .PHP malware analysis — malicious · c400447051d69a93

MALICIOUS

PDF / .PHP

14.3 KB Created: 2009-11-15 19:41:70 Authoring application: PDF Library 4.3.9 (via PDF Library 3.9.7)

MD5: 1448bfcae180d34265c233536a0925c4 SHA-1: 5cb2ebb7dcd60852bb09596d39ba52bf236175c3 SHA-256: c400447051d69a93e5cba47d5629ae5e3183623936e0d3667a1992c55198ab19

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 revealed embedded JavaScript, indicating an attempt to exploit PDF vulnerabilities. The JavaScript is likely responsible for downloading and executing a second-stage payload, though its exact functionality is obscured.

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` `80e8402317094ad9211511cbfc54d0cf800edf00a5a3f1729cbd8fced10296b4`	pdf-javascript-stream	PDF /JS object 7 at offset 0x1A5	74529 bytes
Detection ClamAV: Win.Trojan.Agent-36166 Obfuscation or payload: unlikely

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