MALICIOUS
124
Risk Score
Malware Insights
MITRE ATT&CK
T1059.001 JavaScript
T1204.002 Malicious JavaScript
The PDF file contains embedded JavaScript, indicated by multiple heuristic firings including PDF_JAVASCRIPT, PDF_JS, and PDF_EVAL. The JavaScript uses `unescape()` and `eval()` functions, suggesting it is obfuscated and intended to execute arbitrary code. The presence of `ASCIIHexDecode` filter further supports exploitability. The script content appears to be a deobfuscated string that likely leads to the download and execution of a malicious payload, though the exact URL or payload is not directly visible in the provided excerpt.
Heuristics 6
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eval() call high PDF_EVALeval() found — commonly used for obfuscated exploit execution
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unescape() call high PDF_UNESCAPEunescape() found — often used to decode shellcode in PDF JS exploits
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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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Embedded file low PDF_EMBEDDEDPDF embeds a file attachment — could carry an executable or another weaponised document as a nested payload
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