MALICIOUS
152
Risk Score
Malware Insights
MITRE ATT&CK
T1059.001 PowerShell
T1204.002 Malicious File
The PDF file was identified as malicious by multiple heuristics, including a critical rule indicating a VBScript-style decimal array that decodes to a PE payload. This suggests the document is designed to drop and execute a secondary executable. The embedded PE artifact, with SHA256 hash 1955243b556acdb862324551225a7d0f1afb8ff558751285c6dc3b1ab32b5850, is the likely payload. The ClamAV detection 'Pdf.Dropper.Agent-7278957-0' further supports its role as a dropper.
Machine Learning
- Nyx PDF Classifier malicious score 0.9991
Heuristics 3
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VBScript-style decimal byte array decodes to a PE payload critical PDF_VBS_DECIMAL_ARRAY_PE_PAYLOADPDF comment text contains a VB/VBScript-style decimal byte array, such as c(077),c(090), that decodes to a verified Windows PE executable. The rule is gated on a comment-line Array(c(...)) assignment and a valid MZ/PE header to keep false positives low.
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ClamAV: Pdf.Dropper.Agent-7278957-0 critical CLAMAV_DETECTIONClamAV detected this file as malware: Pdf.Dropper.Agent-7278957-0
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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 |
|---|---|---|---|
decimal_array_pdf_pe_00000229.exe1955243b556acdb862324551225a7d0f1afb8ff558751285c6dc3b1ab32b5850 |
embedded-pe | PDF raw comment decimal-array PE payload at offset 0x229 | 14530 bytes |
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Detection
ClamAV:
No threats found
Obfuscation or payload:
likely
Carved artifact entropy is 7.74, consistent with packed or encrypted content.
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