PDF / .PDF2 malware analysis — malicious · 59b62e650a437032

MALICIOUS

PDF / .PDF2

787.9 KB

MD5: 0cdf55626e56ffbf1b198beb4f6ed559 SHA-1: 5951eef7c336e442c95f247ab2ecc4895f5d3e45 SHA-256: 59b62e650a437032886e1cc74dd7cdf0abab5ee6bc85fb4aa18568733aa89370

154 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1566.002 Spearphishing Attachment

This PDF was detected by ClamAV as Pdf.Dropper.Agent-6205996-0, indicating it functions as a dropper. High-confidence heuristics indicate the presence of encrypted content and JavaScript actions, suggesting the payload is hidden and executed via script. The ML classifier also strongly flagged this PDF as malicious. The document body is unreadable, but the combination of encryption and JavaScript points to a sophisticated delivery mechanism for a second-stage payload.

Machine Learning

Nyx PDF Classifier malicious score 0.9993

Heuristics 5

ClamAV: Pdf.Dropper.Agent-6205996-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Dropper.Agent-6205996-0
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.
XFA form low PDF_XFA

PDF uses XML Forms Architecture — can contain script logic

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