Malicious PDF — malware analysis report

Static analysis result for SHA-256 2935104e4e9482e6…

MALICIOUS

PDF

89.8 KB
MD5: 744fc828e828b4da2f4f9e3463f37d98 SHA-1: e8c3477f13681f736454c5ac57a7750e18a42899 SHA-256: 2935104e4e9482e6f020afc67200bc488560d031cfae63cf3754b56c76458478
188 Risk Score

Malware Insights

This PDF file exploits CVE-2010-0188, a known vulnerability in Adobe Reader related to XFA forms and LibTIFF. The heuristic firings indicate the presence of an XFA form with an embedded script payload, which is characteristic of exploit documents designed to deliver a secondary stage. The ClamAV detection further confirms its malicious nature. The embedded script likely downloads and executes a second-stage payload.

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
3b9e3bfa64c7db469a22b06e204c2e0ae1e2138c1b65385bc6e4003fd4508aea		 pdf-embedded-script PDF raw stream script payload at offset 0x23E 91193 bytes

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