PDF malware analysis — malicious · 93f96e2a235132db

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: 912404b833fd95fbb1ecaab8be64443c SHA-1: b15b76ee9c22acf2c3b8d35409c8ac9b405a45cd SHA-256: 93f96e2a235132db3768944b9b2e25090e8af7ae8e21c8be00efeffe72b68b89

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 code. The JavaScript is likely responsible for downloading and executing a second-stage payload, contributing to the overall malicious nature of the document. The specific payload or its distribution method could not be fully determined due to the nature of the embedded script.

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` `c170bc7d0aaf0ba72432f3f0b0334540d9e7355e2411167f12dd84c0aca782c7`	pdf-javascript-stream	PDF /JS object 7 at offset 0x1A5	74339 bytes
Detection ClamAV: Win.Trojan.Agent-36166 Obfuscation or payload: unlikely

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