Malicious PDF — malware analysis report

Static analysis result for SHA-256 2ead72caf181e229…

MALICIOUS

PDF

5.0 KB Created: V6,è:¤™˜Uè`öGß Authoring application: Aol±héځTñaê@Ý (via Aol±héځ5›ä?QŽBJ¥î½í†H#ÃP)
MD5: 3969383ea78d8cc6607e9af4a7300631 SHA-1: 6d1f03aff6200d90e05802fe0a191db2df72640d SHA-256: 2ead72caf181e2296758c8b7cd1dffeb52d255973d55fa33fdb5ca072dfd615b
86 Risk Score

Malware Insights

MITRE ATT&CK
T1059.001 PowerShell T1566.001 Spearphishing Attachment T1027 Obfuscated Files or Information

The PDF file contains embedded JavaScript, which is used to encrypt the document's content and hide its true nature. The ML classifier strongly indicates maliciousness. The presence of JavaScript actions and encrypted content points towards an attempt to evade static analysis and deliver a secondary payload, likely through obfuscated code.

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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