MALICIOUS
64
Risk Score
Malware Insights
MITRE ATT&CK
T1059.001 PowerShell
T1059.007 JavaScript
The PDF file contains embedded JavaScript that utilizes eval() and String.fromCharCode() for obfuscation. This technique is commonly used to hide malicious code, such as downloaders or exploit execution. The high confidence heuristic for eval() and the presence of JavaScript actions strongly suggest that the script is designed to execute arbitrary code, likely fetching and running a second-stage payload. The obfuscated nature of the script prevents a more detailed analysis of its specific actions.
Heuristics 4
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eval() call high PDF_EVALeval() found — commonly used for obfuscated exploit execution
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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.
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