MALICIOUS
108
Risk Score
Malware Insights
MITRE ATT&CK
T1204 Malicious File
T1204.002 Malicious File: User Execution: Malicious File
The file is identified as a malicious PDF by ML classification and ClamAV, with a specific ClamAV detection name of Pdf.Exploit.Agent-36874. Static analysis revealed the presence of an XFA form and an AcroForm button with an action trigger, common components in PDF exploits. An embedded, decompressed PDF stream was also flagged as suspicious. The combination of these factors strongly suggests the PDF is intended to exploit a vulnerability, likely to download and execute a second-stage payload.
Machine Learning
- Nyx PDF Classifier malicious score 0.9993
Heuristics 4
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ClamAV: Pdf.Exploit.Agent-36874 critical CLAMAV_DETECTIONClamAV detected this file as malware: Pdf.Exploit.Agent-36874
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XFA form low PDF_XFAPDF uses XML Forms Architecture — can contain script logic
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AcroForm button with action trigger low PDF_ACROFORM_BUTTONPDF contains a /Btn form field together with a SubmitForm/URI/Launch/JS trigger — this is the building block of fake 'Download' or 'Open' button overlays used in PDF phishing lures
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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 |
|---|---|---|---|
stream_001_off000008ed.binebd08603f5e3a4d1d920fb75dc9993e9147810f64126d4d71bac6f5910fa6c46 |
decompressed-pdf-stream | PDF FlateDecoded stream at offset 0x8ED | 1448 bytes |
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Detection
ClamAV:
No threats found
Obfuscation or payload:
likely
Carved artifact contains 1 long base64-like blob(s).
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