PDF malware analysis — malicious · bf68d47799af4e67

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: ac8fddfc0a7da88000adf226c95571c5 SHA-1: 993c5e05f273e2e742109ac43f9eae33f659b114 SHA-256: bf68d47799af4e67049e86f75e1b0b60a35d4b1398dc40d5903c9f8dc0381e2a

136 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 JavaScript/JScript

The file is a PDF containing embedded JavaScript, which is a common vector for exploiting vulnerabilities. The ClamAV detection of 'Win.Trojan.Agent-36166' strongly suggests malicious intent. The embedded JavaScript is likely responsible for downloading and executing a second-stage payload, although its exact function cannot be determined due to obfuscation. The SHA256 hash is included as a primary indicator.

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` `9c2739a1c6069b42e2c95b9ebed4ca4933c575ecf87152273ac4b40f45bb333b`	pdf-javascript-stream	PDF /JS object 7 at offset 0x1A5	74373 bytes
Detection ClamAV: Win.Trojan.Agent-36166 Obfuscation or payload: unlikely

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