PDF malware analysis — malicious · f5ecc247221621e1

MALICIOUS

PDF

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

MD5: 6d9505ba9c0447be5d71d701f8c257c7 SHA-1: 0d074d270b30159f3e39fd60b84726cd0c20f1b0 SHA-256: f5ecc247221621e1b368ba7c98d40e68c55b300f1e33cdca4e24470f0f22eb5c

136 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

The PDF file contains embedded JavaScript, indicated by the PDF_JAVASCRIPT and PDF_JS heuristics. ClamAV detections (Win.Trojan.Agent-36166) confirm its malicious nature. The embedded JavaScript is likely responsible for downloading and executing a second-stage payload, as is common with this type of attack. The document body is unreadable, but the presence of JavaScript and the ClamAV detection strongly suggest a malicious intent.

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` `d31f01096ed0ab2bfc21b332142c691e44024815133abef32e3a3c2c7ae8dd1d`	pdf-javascript-stream	PDF /JS object 7 at offset 0x1A5	83638 bytes
Detection ClamAV: Win.Trojan.Agent-36166 Obfuscation or payload: unlikely

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