Malicious PDF — malware analysis report

Static analysis result for SHA-256 4c423d8900f0347f…

MALICIOUS

PDF

79.6 KB
MD5: 22be9330187699eb582af0aa6fc82dd6 SHA-1: b2e5a87eb58e844fdaf22f2c4e39129c07caedf4 SHA-256: 4c423d8900f0347ff236cc7892a15ed18fa0a69e1dbc13c61f196d04e3f129f2
190 Risk Score

Malware Insights

MITRE ATT&CK
T1204.002 Malicious File T1566.001 Spearphishing Attachment T1059.001 PowerShell

The file is a PDF document that leverages XFA forms, triggering a critical heuristic for CVE-2010-0188, an Adobe Reader LibTIFF exploit. An embedded script payload was also detected within the XFA form. This indicates the document is designed to exploit vulnerabilities in PDF readers to execute malicious code, likely leading to further compromise.

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_00000288.bin
75e953406d8453f81d8f8953c2d9719fe482481f77d514e30c23780cdf1087e5		 pdf-embedded-script PDF raw stream script payload at offset 0x288 80797 bytes

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