Malicious PDF — malware analysis report

Static analysis result for SHA-256 a748f5edbc074fd8…

MALICIOUS

PDF

97.0 KB
MD5: edff0acf461ca79880ef91060f21462b SHA-1: 6c05fcdf3c640a715f4aab9578340d256f6a80d2 SHA-256: a748f5edbc074fd858d264550f6724aa26b6ac020e05566a59764e641a378d99
118 Risk Score

Malware Insights

MITRE ATT&CK
T1059.001 PowerShell T1204.002 Malicious File

The PDF file contains an embedded script payload and triggers XFA form heuristics, indicating it is designed to exploit PDF vulnerabilities. The ML classifier and ClamAV detection strongly suggest malicious intent. The embedded script is likely responsible for downloading and executing a second-stage payload, although its exact functionality is obscured by the PDF structure.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • ClamAV: Pdf.Exploit.Agent-6136306-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Exploit.Agent-6136306-0
  • Embedded script payload in PDF stream medium PDF_EMBEDDED_SCRIPT_PAYLOAD
    PDF stream bytes contain an HTML/XFA <script> tag without accompanying Windows shell-execution primitives — common in accessible XFA forms but worth surfacing for analyst review.
  • XFA form low PDF_XFA
    PDF uses XML Forms Architecture — can contain script logic
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL http://ns.adobe.com/xdp/
    • http://www.xfa.org/schema/xfa-template/2.5/
    • http://www.xfa.org/schema/xfa-data/1.0/

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
embedded_pdf_script_0000026a.bin
0adad778f541276af3ca4850a10b3a3b6239460f09103e8b033c684c8c93dbc6		 pdf-embedded-script PDF raw stream script payload at offset 0x26A 98657 bytes

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