Malicious PDF — malware analysis report

Static analysis result for SHA-256 ee6ba1fd628beb23…

MALICIOUS

PDF

6.6 KB Created: ½jœ5Ìþ©Œ8¤C¯S 5 Authoring application: ª3Ülž³ê”8§T¨O5 (via ª3Ülž³ê”YbÒZ×]uŠeHëXÖülî &$)
MD5: 237d19d1e820e78da091ec2cf1864f0f SHA-1: 9568e57eb5c4e0cf552f3da27e940577228af9e4 SHA-256: ee6ba1fd628beb23f9e56ce0702f62763802d901db5592ce43152b0485d8e802
86 Risk Score

Malware Insights

MITRE ATT&CK
T1059.001 PowerShell

The PDF was flagged as malicious by an ML classifier with high confidence. It contains embedded JavaScript and is encrypted with JavaScript, indicating an attempt to hide the malicious payload from static analysis. The presence of JavaScript actions and streams suggests the script is used to execute malicious code, likely to download and run a secondary payload.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • Encrypted PDF carries /OpenAction — payload hidden from static analysis high PDF_ENCRYPTED_WITH_JS
    PDF declares /Encrypt and also references an executable trigger (/OpenAction). Document encryption hides the JavaScript body and stream contents from static scanners — combined with auto-execution indicators this is a known evasion pattern used to deliver weaponised JavaScript that the analyst cannot inspect without the decryption key.
  • 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.