Malicious PDF — malware analysis report

Static analysis result for SHA-256 b733bdc399a1c81e…

MALICIOUS

PDF

1.95 MB
MD5: 9004bf494843f07fa488205f31335718 SHA-1: dee7dac42348c52803ce1342d5823fd3ea3b46e7 SHA-256: b733bdc399a1c81e6f05ca72cf72e28f69b551b7d5a37680f5a501659a474148
188 Risk Score

Malware Insights

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

The file is a PDF document that leverages the CVE-2010-0188 vulnerability, which affects Adobe Reader's XFA form processing. This exploit allows for the execution of arbitrary code. The embedded script payload and XFA form heuristics confirm the malicious intent. The ClamAV detection further supports this assessment.

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_0000023c.bin
ddd5121f659dfb2572735aa5c5b428b3cad9a8c7ec09393ef3e35a0d24cd7b4c		 pdf-embedded-script PDF raw stream script payload at offset 0x23C 91130 bytes

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