Malicious PDF — malware analysis report

Static analysis result for SHA-256 b0d18cef4250294d…

MALICIOUS

PDF

111.4 KB
MD5: 22c6f0186026fa9fbc930aeb94c97680 SHA-1: 743c16e18be5e7b376919d4c2b62e65e809b7cc3 SHA-256: b0d18cef4250294dd80bbd92cf24b44ba8294e826aac619c0e3f60b081e2ed73
190 Risk Score

Malware Insights

MITRE ATT&CK
T1204.002 Malicious File T1059.001 PowerShell

The PDF file contains an XFA form that leverages CVE-2010-0188, a known exploit for Adobe Reader. The embedded script payload within the XFA form is indicative of an attempt to download and execute a secondary stage payload. The presence of multiple XFA-related heuristics and a ClamAV detection strongly supports this conclusion.

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
750c266d550cb82e70398cf7e316a597c1da6991262fc62ee2c702cb33a0886b		 pdf-embedded-script PDF raw stream script payload at offset 0x238 113387 bytes

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