Malicious PDF — malware analysis report

Static analysis result for SHA-256 39a69de57ab1dc0a…

MALICIOUS

PDF

100.6 KB
MD5: 2717937b2ece2a4c75074055ee20f3e1 SHA-1: 1ef18eb61a98cffa11f64411eaaf8b440eef3edd SHA-256: 39a69de57ab1dc0af6eece7b1b76e45d7cec0d0768303d895848861ee4d5598b
190 Risk Score

Malware Insights

The file is a PDF document that leverages the CVE-2010-0188 exploit, targeting Adobe Reader. Heuristics indicate the presence of an XFA form with an embedded script payload. This script is likely responsible for the malicious behavior, potentially downloading and executing a second-stage payload. The ClamAV detection further confirms its malicious nature.

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_00000238.bin
93a11d20cf006debd874f9d3420821f7538d7b75da2a2381f8cbf09e69a0cd8d		 pdf-embedded-script PDF raw stream script payload at offset 0x238 102307 bytes

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