PDF malware analysis — malicious · c1db6c29d0b62e6d

MALICIOUS

PDF

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

MD5: a8837d5a90248758b1e8e3366b619c99 SHA-1: 10c897314de592306a1072a6a7be2f1a061238c7 SHA-256: c1db6c29d0b62e6d0adb991614ba93b1bc302b25e75d5b6835f7f6dd41e294e2

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 is likely responsible for downloading and executing a second-stage payload, though its exact function is obscured by obfuscation.

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` `c4c19c12dda695227ea5fe720c80e77aa32f100e26c62892f810d5ee89ce8127`	pdf-javascript-stream	PDF /JS object 7 at offset 0x1A5	74864 bytes
Detection ClamAV: Win.Trojan.Agent-36166 Obfuscation or payload: unlikely

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