Malicious PDF — malware analysis report

Static analysis result for SHA-256 df104bbf3e491a84…

MALICIOUS

PDF

98.8 KB
MD5: f12ea3f9b9e529cfeb47488644174fd5 SHA-1: f79ecbf6ab2f4cde897882da515b8f1c05a3ab8e SHA-256: df104bbf3e491a84e86fe563475a5612823f54f624ee6a1c84c1859f157db23d
118 Risk Score

Malware Insights

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

The PDF exhibits characteristics of malicious exploitation, including XFA form usage and an embedded script payload, as indicated by multiple high-severity heuristics and a strong ML classifier score. ClamAV also identified it as Pdf.Exploit.Agent-6136306-0. The embedded script is likely responsible for delivering the malicious payload, although its exact function is obscured by the PDF structure. The embedded URLs, while not directly malicious, are part of the document's 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_0000026c.bin
8a8aca8eb889ea48f4aad645ec045acc7cf734b7139a01eab52aa7a6249fb3a8
pdf-embedded-script PDF raw stream script payload at offset 0x26C 100487 bytes