Malicious PDF — malware analysis report

Static analysis result for SHA-256 48bade638cdbdb4a…

MALICIOUS

PDF

1.1 KB
MD5: 643732fa6b3d5aea0b7736c22d8934a9 SHA-1: 5150bc1ccb0bd67c52e8232e617b079cd9bf90ce SHA-256: 48bade638cdbdb4a6199da8b26d2884c6f949b4d7207a9ceba6dad1f113ed332
106 Risk Score

Malware Insights

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

The PDF file contains embedded JavaScript, indicated by multiple heuristic firings including 'PDF_JAVASCRIPT', 'PDF_JS', and 'PDF_CORRELATED_MALICIOUS_JS'. The ML classifier also strongly flagged this PDF as malicious. The embedded JavaScript is likely responsible for executing malicious code, although the specific actions are not detailed in the provided evidence. The absence of a document body and scripts prevents a more detailed analysis of the attack's pretext or payload.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • Correlated malicious PDF JavaScript signals critical PDF_CORRELATED_MALICIOUS_JS
    PDF JavaScript or auto-action content is corroborated by exploit staging, ML, or suspicious extracted-artifact findings. This correlation promotes old exploit-kit PDFs that otherwise remain in the suspicious band because each individual signal is intentionally weighted conservatively.
  • 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.