Malicious PDF — malware analysis report

Static analysis result for SHA-256 0063d5e3fb4a173b…

MALICIOUS

PDF

97.3 KB
MD5: a36fdaf7653a78812a15e86868ca51e5 SHA-1: 382ed1fbf9b70e4cd867e326a23c210ac5063f9b SHA-256: 0063d5e3fb4a173b2c964c97dea00ac9bf6d8edaf38ee47fd324f254a5ada382
120 Risk Score

Malware Insights

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

The PDF utilizes XFA forms and contains an embedded JavaScript payload. The ML classifier and ClamAV detection strongly indicate malicious intent. The embedded script is heavily obfuscated but appears designed to download and execute a second-stage payload, leveraging the PDF's scripting capabilities.

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
d16d2f5410b312c9cd9bd1f96ab79022de987a73f61ab4a2cdf2eb82b8a4f1db		 pdf-embedded-script PDF raw stream script payload at offset 0x26C 98867 bytes

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