Malicious PDF — malware analysis report

Static analysis result for SHA-256 98418975e91d8a22…

MALICIOUS

PDF

79.4 KB
MD5: dad12cebb05ac53d5117fecf27a9b168 SHA-1: ffbb161bea77d04b0f44f97c13ffe0dccf9dd4be SHA-256: 98418975e91d8a222c2fe57c50f493eb54c84f504dbe7295a23f8232db2be49f
118 Risk Score

Malware Insights

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

The PDF was flagged by multiple high-confidence heuristics, including a critical ClamAV detection and an ML classifier, indicating malicious intent. The presence of an embedded script payload and XFA form suggests the document is designed to execute arbitrary code. The embedded script, named 'embedded_pdf_script_0000023c.bin', is the primary indicator of malicious activity, likely responsible for downloading and executing a second-stage payload.

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
1233124a9cec600b9a667e7fa6c26a2d5519789e6b56c5cf1e07e3504d46fdea
pdf-embedded-script PDF raw stream script payload at offset 0x23C 80622 bytes