MALICIOUS
88
Risk Score
Malware Insights
MITRE ATT&CK
T1059.001 PowerShell
The PDF contains embedded JavaScript, which is flagged by multiple heuristics including PDF_JAVASCRIPT, PDF_JS, and PDF_EVAL. The ML classifier strongly indicates maliciousness. The JavaScript stream, named javascript_obj0007_000.js, is likely responsible for executing the malicious payload. The obfuscated nature of the JavaScript and the lack of readable document body text prevent a more specific family attribution.
Machine Learning
- Nyx PDF Classifier malicious score 1.0000
Heuristics 4
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eval() call high PDF_EVALeval() found — commonly used for obfuscated exploit execution (matched inside decoded stream)
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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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Suspicious extracted artifact info EXTRACTED_FILE_STATIC_TRIAGEOne or more files extracted from inside this sample matched static suspicious-content checks such as script obfuscation, encoded payload blobs, packed data, or execution/download terms.
Extracted artifacts 1
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
javascript_obj0007_000.jsbc4f8f2f62c1bae8e9704f729504e1be33052fa3d684a15394e87da7da522d39 |
pdf-javascript-stream | PDF /JS object 7 at offset 0x238 | 8225 bytes |
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Detection
ClamAV:
No threats found
Obfuscation or payload:
likely
Carved artifact contains 1 eval/decoder/string-building token(s).
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