Malicious PDF — malware analysis report

Static analysis result for SHA-256 bf767e241d8fc0cd…

MALICIOUS

PDF

75.9 KB
MD5: 7c52f5f72996ad59c5e7e246fa4ec5f2 SHA-1: 3249a7198fa632371766f0b23e9edf46a548a237 SHA-256: bf767e241d8fc0cd0d121b5d7966f9c23252a3142dbea5b2f2e180cd28c09a83
188 Risk Score

Malware Insights

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

The PDF file contains an XFA form that exploits CVE-2010-0188, a vulnerability in Adobe Reader's LibTIFF processing. The embedded script payload, likely responsible for executing the exploit, is present within the XFA structure. This indicates the primary goal is to achieve arbitrary code execution on the victim's machine through a vulnerable PDF reader.

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_00000286.bin
def4626b6dc08c64450cd5ade25fba8c51c8194ce06a79f6fbf3e8dd7d58d017		 pdf-embedded-script PDF raw stream script payload at offset 0x286 76950 bytes

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