Malicious PDF — malware analysis report

Static analysis result for SHA-256 deb77d35ff519550…

MALICIOUS

PDF

12.3 KB
MD5: b81e0403e3e39e523aedda172acdcfe1 SHA-1: fb3ef3af7bef254323953ac6476cb68a9e11d876 SHA-256: deb77d35ff519550582f627a30684a62c0835b46ffbd5877ce00e5040c944a70
106 Risk Score

Malware Insights

MITRE ATT&CK
T1204.002 Malicious Intent: Malicious File

The PDF file was flagged as malicious by multiple heuristics, including a high-severity ML classifier and ClamAV detection identifying it as Win.Trojan.Agent-36281. It contains embedded JavaScript, which is a common technique for executing malicious code within PDF documents. The primary attack pattern involves leveraging this JavaScript to deliver a secondary payload.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • ClamAV: Win.Trojan.Agent-36281 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Win.Trojan.Agent-36281
  • 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.

FilenameKindSourceSize
javascript_obj0076_000.js
353063d6528317371de5269feffcb2855ee3b214c9840a6b0eec91147ca0338d		 pdf-javascript-stream PDF /JS object 76 at offset 0x369 11517 bytes

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