Malicious PDF — malware analysis report

Static analysis result for SHA-256 9e787a7bde678300…

MALICIOUS

PDF

12.8 KB
MD5: 2ecb96929ca4d62d3d81a2146d5889b6 SHA-1: 6f9d236a8893fe5a7dead855d7b06cd70eb4bee3 SHA-256: 9e787a7bde6783003d1a17c115e270907533720195434fe2b98ef11be55d4e70
190 Risk Score

Malware Insights

MITRE ATT&CK
T1203 Exploitation for Client Execution T1059.001 PowerShell

The PDF file contains an XFA form with an embedded script, which is indicative of exploitation. Specifically, the CVE-2010-0188 heuristic firing points to a known Adobe Reader vulnerability related to LibTIFF and XFA. The embedded script, likely responsible for executing the exploit payload, is present in the PDF stream. The embedded URL is likely part of the exploit chain.

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
e1803202446d501415ef5551be6f433f3d9bb7d763ab377a5d5a9adcbd3fc673		 pdf-embedded-script PDF raw stream script payload at offset 0x384 12324 bytes

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