PDF malware analysis — malicious · 3282d79c1325fa1f

MALICIOUS

PDF

8.5 KB Created: Á ÍT'Î±²nP Authoring application: Öù ØjFÎ ¬kW (via Öù ØjF¯üx£xë8#h¿yáYD·à)

MD5: 33f7fda5f7d410c398b308ba5b198e26 SHA-1: 19b3c7277d2449ed8dd78991a08ed1577e7b4aaa SHA-256: 3282d79c1325fa1ff084eccb8ee4dd277083b3d2a3a277918ba083dead9b526f

86 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell

This PDF file was flagged as malicious by an ML classifier with high confidence. It contains embedded JavaScript, and the PDF is encrypted with an OpenAction, indicating that the payload is hidden from static analysis and likely executed via JavaScript. The presence of JavaScript actions and embedded JS streams suggests an attempt to download and execute 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.

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