Malicious PDF — malware analysis report

Static analysis result for SHA-256 7f88f439cc6ac3aa…

MALICIOUS

PDF

3.6 KB Created: _•õ6|ÿ n4ªÆ.”" Authoring application: H̵oH1Óæ£w6±À6‘& (via H̵oH1ÓæÂC¿¿qÂfÊü‡Ä7èô­7bÑ)
MD5: 7b24f58f16ba687e6034407742ee4cfe SHA-1: a1293ead69d5e1c82a8932819fd263d23647366f SHA-256: 7f88f439cc6ac3aa209dbf28aa165cc53dcbd2adb8dd9784a10fd7f0314308b4
86 Risk Score

Malware Insights

MITRE ATT&CK
T1059.001 PowerShell T1566.002 Spearphishing Attachment

This PDF was flagged as malicious by an ML classifier with high confidence. It contains embedded JavaScript and is encrypted with JavaScript, indicating that the payload is intentionally hidden from static analysis. The presence of JavaScript actions and embedded JS streams suggests the document is designed to execute malicious code upon opening.

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.

Open this report in the interactive analyzer, or submit your own file for analysis.