Malicious PDF — malware analysis report

Static analysis result for SHA-256 b529485b265faafa…

MALICIOUS

PDF

89.8 KB
MD5: 247080a76d351acb966b0c60d65d5ab9 SHA-1: 596caab483cf094dee8c0ec5679a050fef0abb1d SHA-256: b529485b265faafa7e53464a796fb5bf40a67f738aa60fc895e7edb185e59e09
190 Risk Score

Malware Insights

The PDF file contains an XFA form with an embedded script, which is a known vector for exploiting Adobe Reader vulnerabilities. Specifically, the CVE-2010-0188 heuristic indicates a LibTIFF exploit targeting XFA content. The embedded script is likely responsible for downloading and executing a second-stage payload, as suggested by the 'embedded_pdf_script_0000023e.bin' artifact. The presence of XFA and embedded scripts strongly points to a malicious exploit document.

Heuristics 6

  • Adobe Reader LibTIFF XFA image exploit — CVE-2010-0188 critical CVE likely CVE_2010_0188
    PDF contains the CVE-2010-0188 exploit template: XFA JavaScript heap-spray setup, a generated TIFF image payload, and assignment of that TIFF data to an XFA image field rawValue to trigger Adobe Reader's LibTIFF parser.
  • XFA form contains executable script high CVE related PDF_XFA_SCRIPT
    PDF embeds an XFA form whose dataset contains a <script> or <xfa:script> block — XFA scripting has been the exploit primitive for several Adobe Reader RCEs (CVE-2010-0188 family, CVE-2018-4901, and others). Plain XFA without scripts is far less risky.
  • 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_0000023e.bin
717e07f8fa486893ca6d563e4cbbafb0096f5d3b7a61155bc5b809f7a54becd8		 pdf-embedded-script PDF raw stream script payload at offset 0x23E 91189 bytes

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