MALICIOUS
88
Risk Score
Malware Insights
MITRE ATT&CK
T1059.001 PowerShell
The PDF contains embedded JavaScript streams, with one heuristic indicating an eval() call. The ML classifier strongly flags this PDF as malicious. The JavaScript is obfuscated, making its exact function difficult to determine, but the presence of eval() and the ML score suggest it's designed to execute arbitrary code. The document body contains what appears to be obfuscated JavaScript code, further supporting this. No specific family could be identified due to the obfuscation.
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
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JavaScript action low 1 related finding 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 2
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
javascript_obj0007_000.js65f009b6281bc8fe397a3bd6298462d6c6835d0052c9026e558efe71489c4896 |
pdf-javascript-stream | PDF /JS object 7 at offset 0x1EE | 25330 bytes |
|
Detection
ClamAV:
No threats found
Obfuscation or payload:
likely
Carved artifact contains 2 eval/decoder/string-building token(s).
|
|||
javascript_obj0007_001.jsf3b1a19a10f444c068ecf687b4a506bdbd41d0900d66cd745943835b7d9fc6b0 |
pdf-javascript-stream | PDF /JS object 7 at offset 0x1EE | 25058 bytes |
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