MALICIOUS
112
Risk Score
Malware Insights
MITRE ATT&CK
T1059.001 JavaScript/JScript
T1559.001 Component Object Model
The critical ClamAV detection 'Pdf.Exploit.Agent-36178' strongly indicates a PDF exploit. Heuristics confirm the presence of embedded JavaScript, string decoding functions like fromCharCode, and common PDF obfuscation filters (ASCIIHexDecode, ASCII85Decode), all indicative of malicious code execution within the PDF. No specific IOCs like URLs or hashes were extracted, limiting further analysis of the payload.
Heuristics 6
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ClamAV: Pdf.Exploit.Agent-36178 critical CLAMAV_DETECTIONClamAV detected this file as malware: Pdf.Exploit.Agent-36178
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ASCIIHexDecode filter (with exploit indicators) medium PDF_FILTER_HEXHex-encoding filter present alongside exploit delivery indicators — often used to hide payload or shellcode bytes
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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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String.fromCharCode low PDF_FROMCHARCODEString.fromCharCode found — used to construct payload strings dynamically. Common in benign JavaScript libraries for codepoint manipulation, so this alone is informational; weaponised use is also caught by the dedicated fromCharCode-stage and exploit-shape rules. (matched inside decoded stream)
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ASCII85Decode filter (with exploit indicators) low PDF_FILTER_85ASCII85 encoding filter present alongside exploit delivery indicators — uncommon outside of obfuscation
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