MALICIOUS
86
Risk Score
Malware Insights
MITRE ATT&CK
T1059.001 PowerShell
T1566.002 Spearphishing Attachment
The PDF file was flagged as malicious by an ML classifier and contains embedded JavaScript. The JavaScript is likely used to obfuscate and deliver a secondary payload, as indicated by the 'PDF_ENCRYPTED_WITH_JS' heuristic. The embedded URL 'http://www.cadkas.com' is also present. The presence of JavaScript and the encrypted nature of the PDF suggest an attempt to bypass static analysis and execute malicious code.
Machine Learning
- Nyx PDF Classifier malicious score 0.9999
Heuristics 4
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Encrypted PDF carries /JavaScript — payload hidden from static analysis high PDF_ENCRYPTED_WITH_JSPDF declares /Encrypt and also references an executable trigger (/JavaScript). 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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Embedded URL info EMBEDDED_URLOne or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.URL http://www.cadkas.com
Extracted artifacts 1
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
javascript_obj0021_000.js11dd3dd5217a269b6e477c77d269b1bf182a5c6d0f312ad5b43892728b614d88 |
pdf-javascript-stream | PDF /JS object 21 at offset 0x1847 | 46 bytes |
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