Malicious PDF — malware analysis report

Static analysis result for SHA-256 8fc814c8ad3cc0ce…

MALICIOUS

PDF

101.8 KB
MD5: f3df0389f2dc49a8ac78df13af69c869 SHA-1: 7e8aa065f5a05c944c3e2ffb1a7e1bc976d52ebf SHA-256: 8fc814c8ad3cc0ce6f25df93769b5e55f6793e7d0c04d57f24358b69896420f6
188 Risk Score

Malware Insights

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

The PDF file contains an XFA form and triggers the CVE-2010-0188 exploit, which is known to target Adobe Reader's handling of XFA forms and LibTIFF. An embedded script payload was also detected within a PDF stream. This indicates the file is designed to exploit a vulnerability upon opening in a vulnerable PDF reader, likely to download and execute a second-stage payload.

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_00000346.bin
c49f4f6a512362af85506ca5ac082dd3988a42e4322d0dd75ad709bec70b8b8c		 pdf-embedded-script PDF raw stream script payload at offset 0x346 103500 bytes

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