PDF malware analysis — malicious · f366ed38851fd9cf

MALICIOUS

PDF

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

MD5: 039b1e4fa774cf4c718d10924cc8c57e SHA-1: 148c37648420d766907e1b78d8c7a15712d6c3cf SHA-256: f366ed38851fd9cf10c2dae796cb395b71093df1c21a9f7b6cf071664e6be67f

136 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 JavaScript

The PDF file was detected as malicious by ClamAV with the signature Win.Trojan.Agent-36166. Static analysis revealed embedded JavaScript, indicating an attempt to execute malicious code. The document body was unreadable, but the presence of JavaScript and the ClamAV detection strongly suggest a malicious intent, likely to download and execute a second-stage payload.

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` `94fae97484ec1b0ee7010c376133ed6e25497f34f775af8f186a28e15bc1f723`	pdf-javascript-stream	PDF /JS object 7 at offset 0x1A5	74778 bytes
Detection ClamAV: Win.Trojan.Agent-36166 Obfuscation or payload: unlikely

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