PDF malware analysis — malicious · b8d262b0818c5922

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: 0654d260747c34fc23ae65605c2136e0 SHA-1: 3dce0cebb17498f9d964d03d391cc7beec53df40 SHA-256: b8d262b0818c5922d8c3aafedf823f4811723ae7ab58d28faa2ff482844c7a32

136 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 JavaScript/JScript

The PDF file contains embedded JavaScript, indicated by heuristic firings for PDF_JAVASCRIPT and PDF_JS. ClamAV detections (Win.Trojan.Agent-36166) on both the primary file and an extracted artifact confirm its malicious nature. The embedded JavaScript is likely responsible for executing the malicious payload. The document body is unreadable, preventing further analysis of its lure.

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` `89f8ffeebed5b041eccbed72553b9828c7e189814096654f6cd6da9dabc5888b`	pdf-javascript-stream	PDF /JS object 7 at offset 0x1A5	74613 bytes
Detection ClamAV: Win.Trojan.Agent-36166 Obfuscation or payload: unlikely

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