MALICIOUS
154
Risk Score
Malware Insights
MITRE ATT&CK
T1059.001 PowerShell
T1566.002 Spearphishing Attachment
T1204.002 Malicious File
The file is a PDF that has been flagged by ClamAV as 'Pdf.Dropper.Agent-5479605-0'. Heuristics indicate the presence of JavaScript actions and an encrypted structure with an OpenAction, suggesting the payload is hidden from static analysis. The ML classifier also strongly indicates maliciousness. The primary function appears to be dropping or downloading further malicious content.
Machine Learning
- Nyx PDF Classifier malicious score 0.9994
Heuristics 5
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ClamAV: Pdf.Dropper.Agent-5479605-0 critical CLAMAV_DETECTIONClamAV detected this file as malware: Pdf.Dropper.Agent-5479605-0
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Encrypted PDF carries /OpenAction — payload hidden from static analysis high PDF_ENCRYPTED_WITH_JSPDF 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.
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JavaScript action low PDF_JAVASCRIPTPDF contains a /JavaScript action. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
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Embedded JS stream low PDF_JSPDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
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XFA form low PDF_XFAPDF uses XML Forms Architecture — can contain script logic
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