Malicious PDF — malware analysis report

Static analysis result for SHA-256 b467da9454527746…

MALICIOUS

PDF

111.5 KB
MD5: b769cae078fd4bec5aeb9633b924f731 SHA-1: ae5de6a65ec6a92373cb300cba386cf96cde01d7 SHA-256: b467da94545277460a13dc7b1ff04e6837f93783f6cf11dc89f1bd703cfd1a41
248 Risk Score

Malware Insights

MITRE ATT&CK
T1204.002 Malicious File T1059.007 JavaScript

The file is a PDF document that leverages the XFA (XML Forms Architecture) feature to exploit CVE-2010-0188, a vulnerability in Adobe Reader's LibTIFF component. The embedded script is designed to perform a heap spray and execute exploit code, leading to arbitrary code execution. This is further confirmed by the ClamAV detection signature 'Pdf.Exploit.Agent-6136306-0'. The attack pattern is consistent with a malicious document designed to compromise the user's system via an unpatched Adobe Reader installation.

Heuristics 7

  • 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.
  • XFA JavaScript heap-spray exploit code critical PDF_XFA_HEAP_SPRAY
    PDF contains XFA script content with heap-spray or shellcode-like JavaScript markers such as large encoded word sequences, util.pack, large arrays, or spray variable names. This is a weaponised Adobe Reader exploit pattern, not a normal interactive form.
  • 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_0000023b.bin
f479ec15fd4179039ef887ecf455005e16d49c2c0f6d9e080b03a2084c451bf6		 pdf-embedded-script PDF raw stream script payload at offset 0x23B 113417 bytes

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