MALICIOUS
104
Risk Score
Malware Insights
MITRE ATT&CK
T1059.001 PowerShell
T1027 Obfuscated Files or Information
T1140 Deobfuscate/Decode Files or Information
The PDF contains embedded JavaScript that utilizes eval() and unescape() functions, indicating obfuscation. The script attempts to reconstruct and download a payload from a series of concatenated URL strings, such as 'http://pPH0laefmqSyt6eSt9+J5eK0tIKmmoezpPGpwqGamqS2vPLHt9+K57HgtIKmmoezpPGplaLJmqSw56bHt9+Hs+DgtIKikovhpPHyxKfPmqS1tKmVt9+H4rKwtIKlydzhpPGlx6rImqTit6KUt9+Hs7e0tIKgnomy'. This behavior strongly suggests the PDF is a downloader for a second-stage malicious payload.
Heuristics 5
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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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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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