MALICIOUS
88
Risk Score
Malware Insights
MITRE ATT&CK
T1059.001 PowerShell
This PDF file contains obfuscated JavaScript, indicated by the PDF_JAVASCRIPT and PDF_JS heuristics. The presence of an eval() call (PDF_EVAL) strongly suggests that the script is designed to execute arbitrary code. The ML classifier also flagged this PDF as malicious with high confidence. The primary function of the embedded JavaScript appears to be the execution of a second-stage payload, though the exact mechanism is obscured.
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.js2d268fddb9e0bd807ee7468b18cc7025ea103d9afc1ca97fa47b1eddc455c5a2 |
pdf-javascript-stream | PDF /JS object 7 at offset 0x238 | 7980 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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