MALICIOUS
94
Risk Score
Malware Insights
MITRE ATT&CK
T1059.001 PowerShell
T1204.002 Malicious File
The PDF file was flagged by a machine learning classifier as malicious with high confidence. Static analysis revealed embedded JavaScript and an embedded OLE object (06092018.pub). The presence of these elements, combined with the ML verdict, strongly suggests the PDF is designed to deliver a secondary payload or exploit. The embedded JavaScript is likely responsible for initiating the malicious activity.
Machine Learning
- Nyx PDF Classifier malicious score 0.9999
Heuristics 4
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Suspicious extracted artifact high 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.
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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 file low PDF_EMBEDDEDPDF embeds a file attachment — could carry an executable or another weaponised document as a nested payload
Extracted artifacts 2
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
06092018.pubf385fb36a43bd16b36e69c8d1bb2f5c246ad155954ce1f1f570c737827315a67 |
pdf-embedded-file | PDF EmbeddedFile object 1 at offset 0x8C | 107008 bytes |
|
Detection
ClamAV:
No threats found
Obfuscation or payload:
likely
Carved macro source contains an auto-exec entry point and execution/download terms.
|
|||
javascript_obj0003_001.jsa787c7a945170eeb1f9552ddd3ea585b805c65c99a79996ad72fddcb6edbd2b1 |
pdf-javascript-stream | PDF /JS object 3 at offset 0x115DA | 163 bytes |
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