Malicious PDF — malware analysis report

Static analysis result for SHA-256 b70dbe168d3cd4ab…

MALICIOUS

PDF

79.4 KB
MD5: 120ac18bf2a87eefa7da60fd2905b8d8 SHA-1: d87e68d7faa1eeffc7cd1b486f357b4dcd5e8360 SHA-256: b70dbe168d3cd4ab587d8fcfd232f38b88bf168c5576abdb98b2b7430d61be9b
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's designed to execute malicious code. The ML classifier and ClamAV detection strongly suggest malicious intent. The embedded script is likely responsible for downloading and executing a second-stage payload, a common technique for initial infection.

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_0000023c.bin
0f0d672c4c863d7e2897fc280dc3a7e2de3a27939c631c35ea022cff973569e9		 pdf-embedded-script PDF raw stream script payload at offset 0x23C 80624 bytes

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