PDF malware analysis — malicious · 5602140ce9bdaec0

MALICIOUS

PDF

788.1 KB

MD5: 9c572606a22a756a1fcc76924570e92a SHA-1: 5e7d007cea47744fa8c315bb2a9c09b2bff9cc56 SHA-256: 5602140ce9bdaec0a5cd8883ee5d3d39bc19c333f12358b4ff61593cbaa277cc

154 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1566.001 Spearphishing Attachment T1027 Obfuscated Files or Information

The PDF file was flagged by ClamAV as Pdf.Dropper.Agent-7213079-0, indicating it functions as a dropper. High-confidence heuristics indicate the PDF is encrypted and uses JavaScript, with an /OpenAction reference, to hide its payload from static analysis. The ML classifier also strongly indicated maliciousness. The presence of JavaScript and encryption suggests the document is designed to download and execute a second-stage payload.

Machine Learning

Nyx PDF Classifier malicious score 0.9994

Heuristics 5

ClamAV: Pdf.Dropper.Agent-7213079-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Dropper.Agent-7213079-0
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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