PDF malware analysis — malicious · c21dc3a44a780907

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: 95dd7816785ce3f62e4f5f2e3d2882e1 SHA-1: 90c3bd2a684994d8d89b7fa64493f11fcff359c2 SHA-256: c21dc3a44a780907ad5f040243fe32a103fcc9da4fb674a83eb51103a3baf442

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 an attempt to execute arbitrary code. The presence of JavaScript actions and streams strongly suggests the file is designed to download and execute a second-stage payload. The document body was unreadable, but the heuristics and ClamAV detection are sufficient to classify this as a malicious PDF.

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` `ef34894b618ff489f27b6890a0fddd0c944626a9787155f5101e563fa9f56570`	pdf-javascript-stream	PDF /JS object 7 at offset 0x1A5	74424 bytes
Detection ClamAV: Win.Trojan.Agent-36166 Obfuscation or payload: unlikely

Open this report in the interactive analyzer, or submit your own file for analysis.