Malicious PDF — malware analysis report

Static analysis result for SHA-256 9739c5a07ff71b97…

MALICIOUS

PDF

12.8 KB
MD5: 6dd7d3812e7bb726baa4701299ba2ecf SHA-1: 91ca495a09faaf156a789ceb6b9f63ae449e783c SHA-256: 9739c5a07ff71b9734961780192b8c93b2865cc1d48641b1f27453a809f975bb
188 Risk Score

Malware Insights

MITRE ATT&CK
T1204.002 Malicious File T1566.002 Spearphishing Attachment T1059.001 PowerShell

The sample is a PDF file that leverages XFA forms to exploit CVE-2010-0188, a known vulnerability in Adobe Reader. The embedded script payload within the XFA form is indicative of a downloader or exploit delivery mechanism. ClamAV also detected this file as malicious, specifically 'Pdf.Exploit.Agent-6136306-0'.

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
c0dd2c6975f506a34f5e26949a9187527bcff8a7063e143fe04f1b5c8b57dd82		 pdf-embedded-script PDF raw stream script payload at offset 0x384 12312 bytes

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