Malicious PDF — malware analysis report

Static analysis result for SHA-256 041327a4ccf5b607…

MALICIOUS

PDF

100.7 KB
MD5: e1eece1b2103b4620bb5dd2b556e6490 SHA-1: 3b4ed92341dd3d1628b501bcaf356b477a804c03 SHA-256: 041327a4ccf5b60718667294a53b7fe80997c087df4f8a5dae1b72079d45e700
108 Risk Score

Malware Insights

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

The sample is identified as malicious by ClamAV and an ML classifier, with heuristics indicating an XFA form and an embedded script payload. The embedded JavaScript, though truncated, appears to be designed to download and execute a secondary payload. 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_00000246.bin
ceaedcda9a08e5b2d08702b7dce1e631486252c5344db3eee7816ba69178542e		 pdf-embedded-script PDF raw stream script payload at offset 0x246 102374 bytes

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