Malicious PDF — malware analysis report

Static analysis result for SHA-256 80f4a9efe1b30dec…

MALICIOUS

PDF

6.7 KB Created: ÌróԆœVý¹g&9ÛÕ Authoring application: ÛL2ª†ËßfVåºq'.ÙÔ (via ÛL2ª†Ëßf7ÏXiŠ”9×J_\|+Êá1’)
MD5: 3cafd9a55efdad50b135d84030b4d1c4 SHA-1: e6bf53a8d65af7ad1f9541080b526374d23b4a8a SHA-256: 80f4a9efe1b30dece4bb12507549acc2dbaf5855b2a650f2ceedd09daf8f3e35
86 Risk Score

Malware Insights

MITRE ATT&CK
T1059.001 PowerShell

The PDF contains embedded JavaScript and is encrypted with JavaScript, indicating an attempt to hide malicious code. The ML classifier strongly suggests malicious intent. The presence of JavaScript actions and embedded JS streams points to the execution of obfuscated code, likely to download and execute a secondary payload. The document body is unreadable, preventing further analysis of its lure.

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.

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