Malicious PDF — malware analysis report

Static analysis result for SHA-256 207419b0bba1ff90…

MALICIOUS

PDF

12.8 KB
MD5: d2248c5f98fb05161c71628d4551e898 SHA-1: a5d09017582f1770754dea75cf4dda3d81ba924d SHA-256: 207419b0bba1ff90ac34ae905e328a3a8ad8228a3c3ab5cc39bf8e184a38d457
188 Risk Score

Malware Insights

The file is a PDF document that leverages an XFA form to exploit CVE-2010-0188 in Adobe Reader. This exploit is designed to execute embedded scripts, which are present in the sample. The embedded script is likely responsible for downloading and executing a second-stage payload, although its exact function is obscured by the exploit mechanism.

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://www.xfa.org/schema/xfa-template/2.5/

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
embedded_pdf_script_00000384.bin
ced0336e5fd6c12e1ed7a053d12b8cf20ba9a21c54647225017a4f1047ffdf1a		 pdf-embedded-script PDF raw stream script payload at offset 0x384 12324 bytes

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