Malicious PDF — malware analysis report

Static analysis result for SHA-256 8adcb4ff8e0bfdfe…

MALICIOUS

PDF

51.7 KB
MD5: c072a1907bb7303f3a7aca1f2212a8a2 SHA-1: 8912e508099b495ac153fdefcade9f5fe60451e8 SHA-256: 8adcb4ff8e0bfdfedd7c51185ed8c839f6f7acf0da04b6ba2c31a87405391818
188 Risk Score

Malware Insights

MITRE ATT&CK
T1204 Malicious Link T1059.001 PowerShell

The PDF file contains XFA (XML Forms Architecture) which is known to be vulnerable to exploits. Specifically, the CVE-2010-0188 heuristic indicates an exploit targeting LibTIFF within Adobe Reader. An embedded script payload was also detected within an XFA form, suggesting it is used to deliver the exploit. The extracted URLs are related to XFA schemas and Adobe, but do not appear to be directly malicious.

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_00000240.bin
795d8001e708b0e01793b9d1a25a1fd43e9fc66e9db1aaae7393a25079b4f587		 pdf-embedded-script PDF raw stream script payload at offset 0x240 52249 bytes

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