PDF malware analysis — malicious · 298913b8b26e8fce

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: 4e84ad6d23e09dbd2895995e5a8fce5f SHA-1: c65f8ba58b0655fc7d3d5239aa509d270605c15d SHA-256: 298913b8b26e8fce8d16603fcc26da759f389889160cf7ddfe42b37e0ab51fea

136 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 JavaScript/JScript

The PDF file contains embedded JavaScript, indicated by multiple heuristic firings. ClamAV detection confirms this is a malicious file, specifically identified as Win.Trojan.Agent-36166. The embedded JavaScript is the primary mechanism for exploitation, likely to download and execute a secondary 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` `ed16a8d9ca787350a845d929711e92a600661abc15ee9300d263bcd5f7068dbf`	pdf-javascript-stream	PDF /JS object 7 at offset 0x1A5	74837 bytes
Detection ClamAV: Win.Trojan.Agent-36166 Obfuscation or payload: unlikely

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