Malicious PDF — malware analysis report

Static analysis result for SHA-256 ed1460c2a5f09ab8…

MALICIOUS

PDF

57.9 KB
MD5: ffa5868487d0e86b565b2c5eac376724 SHA-1: f9310ef84632b66789502a356943e4c643dfe562 SHA-256: ed1460c2a5f09ab84afa7b67ad27c9bb2e29d327a92e01a0c0633b04712d107b
248 Risk Score

Malware Insights

MITRE ATT&CK
T1203 Exploitation for Client Execution

The sample is a PDF file that utilizes XFA (XML Forms Architecture) to deliver an exploit. Critical heuristics indicate the presence of an XFA heap spray and exploitation of CVE-2010-0188, a known vulnerability in Adobe Reader related to LibTIFF processing within XFA forms. This suggests the file is designed to execute arbitrary code upon opening in a vulnerable reader. No specific family could be identified, but the exploit mechanism is clear.

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 risky executable script high CVE related PDF_XFA_SCRIPT
    PDF embeds an XFA form whose script block contains exploit, submission/launch, or shell-execution primitives. Ordinary LiveCycle print/update scripts are left as generic XFA/JS signals unless stronger behavior is present.
  • 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_0000023c.bin
24ee72fc5b28e92ae04738d036452e25f91e08b59128fe1b7eb915b9cdf5e4f8		 pdf-embedded-script PDF raw stream script payload at offset 0x23C 58572 bytes

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