PDF malware analysis — malicious · 8b7409347bf803fc

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: 85aeaf0e6523a3cd834221efd1fe609b SHA-1: bda92cff1c4ec50f20d46692670e39cc8833ae0a SHA-256: 8b7409347bf803fcd3e3ea52a248339a42a3fffc55168a4aec86f439b8ab0dd2

136 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 JavaScript/JScript

The file is identified as a malicious PDF by ClamAV with the signature Win.Trojan.Agent-36166. Static analysis detected embedded JavaScript, indicating an attempt to exploit PDF vulnerabilities. The embedded JavaScript stream is the primary mechanism for delivering the malicious payload, likely leading to the execution of further malware.

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` `7e2f7f965ce7df5980d669f435d1b13ab5b1cf1748265962d88ecba109923b0d`	pdf-javascript-stream	PDF /JS object 7 at offset 0x1A5	74385 bytes
Detection ClamAV: Win.Trojan.Agent-36166 Obfuscation or payload: unlikely

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