PDF malware analysis — malicious · b640d81a76afac6c

MALICIOUS

PDF

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

MD5: c2ed87d5467126a9fd36437c94bc9e5a SHA-1: 61373d800374e4f6db57d9dc78aee9d14f5b56a8 SHA-256: b640d81a76afac6c2fc5fe578a3f776072b303145be461ff6bfe45e29d27b8a9

136 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell

The PDF contains embedded JavaScript, evidenced by multiple heuristic firings related to PDF JavaScript actions and streams. A critical ClamAV detection identifies the file as 'Win.Trojan.Agent-36166', strongly suggesting malicious intent. The embedded JavaScript is likely responsible for executing the malicious payload, leading to the malware detection.

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` `2fe29e46159af7baf72094cd9eda8476153e09e691133bfabd1ca62946e46c1f`	pdf-javascript-stream	PDF /JS object 7 at offset 0x1A5	75966 bytes
Detection ClamAV: Win.Trojan.Agent-36166 Obfuscation or payload: unlikely

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