Malicious PDF — malware analysis report

Static analysis result for SHA-256 7e7fa75405a06875…

MALICIOUS

PDF

51.3 KB
MD5: 95698dd36073080db880900f70396675 SHA-1: 4bbe9785269ad11e0b40e297b495780e3638b324 SHA-256: 7e7fa75405a068750f67391692f4920d98bbb740afb5684de38a847fc4153aa5
108 Risk Score

Malware Insights

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

The PDF file contains an embedded JavaScript payload within an XFA form, as indicated by the PDF_XFA and PDF_EMBEDDED_SCRIPT_PAYLOAD heuristics. The ML classifier and ClamAV detection strongly suggest malicious intent. The embedded script is heavily obfuscated but appears to be designed to download and execute a secondary payload, likely exploiting a client execution vulnerability. The benign URLs present are likely decoys or standard XFA schema references.

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_00000240.bin
30b8b2669f2f79252e6664b0bc1157a9dd4be5ee4742988dbfe172b724974b73		 pdf-embedded-script PDF raw stream script payload at offset 0x240 51776 bytes

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