Malicious PDF — malware analysis report

Static analysis result for SHA-256 c2083791ef1c2fdf…

MALICIOUS

PDF

79.6 KB
MD5: 9bf4e2f3444ebf95d2149429cc80024a SHA-1: 7c8e7ee68104663125c81d953cacdcd34fcc0a97 SHA-256: c2083791ef1c2fdff9f9719c6ff938c5a5e63edbede59b05faf56dea923ad747
188 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 the XFA (XML Forms Architecture) feature to deliver a payload. Static analysis detected a critical heuristic firing for CVE-2010-0188, indicating an exploit targeting Adobe Reader's LibTIFF processing within XFA forms. An embedded script payload was also identified, further supporting the malicious nature of the document. The exploit likely leads to arbitrary code execution, as suggested by the ClamAV detection of 'Pdf.Exploit.Agent-6136306-0'.

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
c1e4a1b5661584ba15c104e0f8a5bad4aab0c008f7258d8b58405ec624235aa5		 pdf-embedded-script PDF raw stream script payload at offset 0x288 80811 bytes

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