PDF malware analysis — malicious · 9b01a05fd0e51bca

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: ac5d6c004d461de20ce23286848595b5 SHA-1: 95e805b5349bef2d3ea7c9cbd516ac12c2240a4a SHA-256: 9b01a05fd0e51bca5ec1caaf4ed481b994d383c6a3d1c9e9dc17af759d292c3d

136 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell

The PDF contains embedded JavaScript, evidenced by the 'PDF_JAVASCRIPT' and 'PDF_JS' heuristic firings. The critical ClamAV detection 'Win.Trojan.Agent-36166' strongly suggests the execution of a known malicious payload. The embedded JavaScript is likely responsible for downloading and executing a second-stage payload.

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` `3f437aac0ff1171384979b6f9293dd682eaa9a4b17800a76154366492ddc538b`	pdf-javascript-stream	PDF /JS object 7 at offset 0x1A5	74608 bytes
Detection ClamAV: Win.Trojan.Agent-36166 Obfuscation or payload: unlikely

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