Malicious PDF — malware analysis report

Static analysis result for SHA-256 4755b466cab86fe8…

MALICIOUS

PDF

12.4 KB
MD5: aca1a557fb952b35bb0763675cc79223 SHA-1: dd0cc5238e231ccd2591245f9c703d9ca6958713 SHA-256: 4755b466cab86fe8cf0c6779cab02e77f2ec0aa0604e463d77fafedf2b5ec5d3
106 Risk Score

Malware Insights

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

The PDF contains embedded JavaScript, indicated by multiple heuristic firings and the presence of a JavaScript object. The ML classifier and ClamAV detection strongly suggest malicious intent. The embedded JavaScript is likely used to exploit vulnerabilities within the PDF reader or download a secondary payload.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • ClamAV: Win.Trojan.Agent-36280 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Win.Trojan.Agent-36280
  • 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
d911e29957a8d467aa9f5e77063443b5f4a601c0e0d8925b819086ea6a3f9449		 pdf-javascript-stream PDF /JS object 76 at offset 0x383 11556 bytes

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