MALICIOUS
108
Risk Score
Malware Insights
MITRE ATT&CK
T1204.002 Malicious File
T1566.002 Spearphishing Attachment
The ML classifier and ClamAV heuristic firings strongly indicate this PDF is malicious, specifically identified as Pdf.Exploit.Agent-36874. The presence of an XFA form and an AcroForm button with an action trigger suggests an exploit is embedded within the PDF structure. The decompressed stream artifact further supports the presence of malicious content, likely an exploit designed to execute a 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.bin004933acaad4a9682c0788ef00b3aed242f55c1fd075fb693e40e3ef73ecfd13 |
decompressed-pdf-stream | PDF FlateDecoded stream at offset 0x8ED | 1432 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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