Malicious PDF — malware analysis report

Static analysis result for SHA-256 6bbe66af6fdc4ef0…

MALICIOUS

PDF

12.8 KB
MD5: 27587b6ecc6fcedd147d4c4ae68de690 SHA-1: 1b1cf292ad8a06daf7b820b04514be0b6552ead2 SHA-256: 6bbe66af6fdc4ef0cf801e02fdea4f1da910429d5062581052dfb41935ec5126
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, indicated by the 'PDF_EMBEDDED_SCRIPT_PAYLOAD' heuristic and the script content. This script is designed to execute, likely as part of an exploit targeting PDF readers. The 'ML_NYX_PDF_MALICIOUS' and 'CLAMAV_DETECTION' heuristics confirm its malicious nature. The embedded URL, while benign, is present within the document 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
  • 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://www.xfa.org/schema/xfa-template/2.5/

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
embedded_pdf_script_00000359.bin
44973656f7eac8c1cdae33c6cef1b1cfa9734819d417655d0b7e4bd81ca0b166		 pdf-embedded-script PDF raw stream script payload at offset 0x359 12350 bytes

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