Malicious PDF — malware analysis report

Static analysis result for SHA-256 999d1db2eda91fdd…

MALICIOUS

PDF

12.3 KB
MD5: a1fb86c8bb552064d84779927083bb1d SHA-1: a81cbf036ffc0fc91ea2184e8a5ced45f7163eb0 SHA-256: 999d1db2eda91fddec750a0cc2617da78ccac0850eb9fbdcf6a508a784b6575e
106 Risk Score

Malware Insights

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

The PDF file was flagged by multiple heuristics, including a high-confidence ML classifier and ClamAV detection as Win.Trojan.Agent-36281. It contains embedded JavaScript, which is often used to exploit vulnerabilities or download further malicious content. The primary attack vector appears to be the execution of this embedded script.

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
52b2f331fd44c9cfffc862e86ad2f5f52ecb8862bafd38fa339d2484a5e30a3f		 pdf-javascript-stream PDF /JS object 76 at offset 0x369 11541 bytes

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