Malicious PDF — malware analysis report

Static analysis result for SHA-256 2dbe3a756f2c6113…

MALICIOUS

PDF

102.2 KB
MD5: 2f18fbde94eef472af9e00f8b82722e5 SHA-1: c5fc2d1595a91e89bdf4659b212c7ec19ac42f12 SHA-256: 2dbe3a756f2c6113b58bafdd94d71758459909d4cf511f08f172bbc454a8fdd8
190 Risk Score

Malware Insights

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

The sample is a PDF file that contains an embedded XFA form with executable script content. Heuristics indicate a critical vulnerability exploit for CVE-2010-0188, a known Adobe Reader LibTIFF XFA image exploit. The embedded script is likely responsible for executing the exploit payload, leading to arbitrary code execution. The embedded URL is likely related to the XFA template but has no reputation.

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
af91d53388323224d5d20f6612edbb0f12f577c39baccdfc7f48358a2e4a750f		 pdf-embedded-script PDF raw stream script payload at offset 0x346 103883 bytes

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