PDF malware analysis — malicious · ffc10062cae187d7

MALICIOUS

PDF

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

MD5: 1e4532cfea0ee81049ac92ec06304fbb SHA-1: 76beaa8d208280e4740c22f4ef8eb006ac4a7df0 SHA-256: ffc10062cae187d793de553b622315c0be035ceb3abe1dbbfe72ee3b2c2bfedb

136 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 JavaScript/JScript

The file is identified as malicious by ClamAV with the signature Win.Trojan.Agent-36166. Static analysis detected embedded JavaScript within the PDF structure, indicating an attempt to execute code. The JavaScript is likely responsible for downloading and executing a second-stage payload, although 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` `ed486379fc63a51c23990b6a6ec45848d778249f5cd6839134e5ec47b318bcee`	pdf-javascript-stream	PDF /JS object 7 at offset 0x1A5	76123 bytes
Detection ClamAV: Win.Trojan.Agent-36166 Obfuscation or payload: unlikely

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