Malicious PDF — malware analysis report

Static analysis result for SHA-256 724d40085ea36443…

MALICIOUS

PDF

100.4 KB
MD5: 5bf76a01a74130be6813f2b88044d137 SHA-1: 42d17f518a5403455cc29b2ca7fdaf4012b05145 SHA-256: 724d40085ea36443a9eefbf732b681c97a616e53d16a36effc7ebbd944577df1
108 Risk Score

Malware Insights

MITRE ATT&CK
T1059.007 JavaScript T1203 Exploitation for Client Execution T1566.001 Spearphishing Attachment

The PDF file contains embedded JavaScript within an XFA form, a known vector for exploitation. The embedded script is heavily obfuscated but appears to be designed to download and execute a secondary payload. The ML classifier and ClamAV detection strongly indicate malicious intent, likely delivered via spearphishing.

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
  • XFA form low PDF_XFA
    PDF uses XML Forms Architecture — can contain script logic
  • Embedded script payload in PDF stream low 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.
  • 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_00000246.bin
ea46602cffa463b8747bc095defcc8abfe810dc124c484e916ce1cf5ec2ecaa7		 pdf-embedded-script PDF raw stream script payload at offset 0x246 102040 bytes

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