Malicious PDF — malware analysis report

Static analysis result for SHA-256 2c0a8812c6b6475f…

MALICIOUS

PDF

111.0 KB
MD5: ba335904ed52d06dd62a80217913300b SHA-1: 7892fe3c20723a548f7342640716b1df3761a812 SHA-256: 2c0a8812c6b6475f34a1b78992c7e9f287d6aaded8b55883091fb400bdad1d83
248 Risk Score

Malware Insights

MITRE ATT&CK
T1204.002 Malicious File: User Execution: Malicious File

The file is a PDF document that contains XFA (XML Forms Architecture) content, which is known to be a vector for exploits. Heuristics indicate the presence of an XFA heap spray and an exploit targeting CVE-2010-0188, a known vulnerability in Adobe Reader's LibTIFF component. The embedded script payload is likely responsible for triggering this exploit, leading to arbitrary code execution. The embedded URLs are related to XFA schema definitions and do not appear to be malicious themselves.

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
3f3c086ba07574e6a9c7666828605d0da1b8c3d203dcf371f4967a2289e9829a		 pdf-embedded-script PDF raw stream script payload at offset 0x23B 112929 bytes

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