Malicious PDF — malware analysis report

Static analysis result for SHA-256 c10b8742bdd85607…

MALICIOUS

PDF

12.7 KB
MD5: fc0bd8d006023a683f36967bfc61adfe SHA-1: 7f09aecc9ee59525dbb9ed57ccd2325fb453cc29 SHA-256: c10b8742bdd85607aafeec94ea2a63ee5345680af288363d3be96972b86632f6
188 Risk Score

Malware Insights

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

The sample is a PDF file that contains an XFA form and an embedded script. Heuristics indicate it exploits CVE-2010-0188, a known vulnerability in Adobe Reader related to LibTIFF and XFA. The embedded script is likely responsible for executing the exploit payload. The embedded URL is likely benign, related to XFA schema definitions.

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_00000359.bin
d565811aae4ec568bbd71db13291f3ebb9766d1e8562db8bc98d853c39a0dbd6		 pdf-embedded-script PDF raw stream script payload at offset 0x359 12281 bytes

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