PDF malware analysis — malicious · 8a7cad16a9bb3c8a

MALICIOUS

PDF

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

MD5: 0a6fcc689f3c9955f70a79cf14e817df SHA-1: c8ef4d2d97481a2159bb8841775196502eb0151c SHA-256: 8a7cad16a9bb3c8a5e61252a964ee286030a0bd9583625547dd36d826332b2c7

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 detection confirms the file is malicious, identifying it as 'Win.Trojan.Agent-36166'. The embedded JavaScript is likely responsible for executing the malicious payload, although its specific actions are not detailed in the provided evidence.

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` `90fcbff02f89cfffd5b643b948ff54a844307f34f2aea46f8811d3ef8fd01c1b`	pdf-javascript-stream	PDF /JS object 7 at offset 0x1A5	84174 bytes
Detection ClamAV: Win.Trojan.Agent-36166 Obfuscation or payload: unlikely

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