Malicious PDF — malware analysis report

Static analysis result for SHA-256 a7b1d3dc04340d3d…

MALICIOUS

PDF

100.9 KB
MD5: 79a8ec93159929d8c576fac6db8d6190 SHA-1: fa8d5a9bdfc56242c842082956c4ea18ea355afa SHA-256: a7b1d3dc04340d3d8c3f2b152c3454db49553829d6cbd6aad1011aa7c172859a
188 Risk Score

Malware Insights

The PDF file contains an XFA form with embedded script, which is exploited by CVE-2010-0188. This exploit targets Adobe Reader and is designed to download and execute a malicious payload. The ClamAV signature 'Pdf.Exploit.Agent-6136306-0' further confirms its malicious nature. The embedded script is the primary mechanism for delivering the exploit.

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
316b42eb13d1d1c4f4ac84fcf0b30e6e783b6ec40173e9c765efbe40cafa9383		 pdf-embedded-script PDF raw stream script payload at offset 0x238 102647 bytes

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