Malicious PDF — malware analysis report

Static analysis result for SHA-256 348c6a79e0635ee2…

MALICIOUS

PDF

59.5 KB
MD5: 62c8268ea4c34a47748c9df8a52124b2 SHA-1: e9d198a8bff41f4a86c6473b5349d04885e63629 SHA-256: 348c6a79e0635ee235309f490ed1e61dca571c092de9ba0bda6cd45ab268d17e
136 Risk Score

Malware Insights

MITRE ATT&CK
T1204 Malicious Link T1204.002 Malicious File T1059 Command and Scripting Interpreter

The PDF file contains an embedded XFA form that triggers the CVE-2010-0188 exploit. This exploit is known to allow arbitrary code execution. The embedded script payload within the XFA form likely facilitates the download and execution of a second-stage payload, although the exact mechanism is not fully discernible from the provided heuristics. The presence of embedded URLs, while not directly malicious in this case, is typical of documents used for exploitation.

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.
  • 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.
  • Embedded file low PDF_EMBEDDED
    PDF embeds a file attachment — could carry an executable or another weaponised document as a nested payload
  • 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_file_obj0008.bin
b5aa223f386491c41a4dc0c65b22820a449578ddff1e4180eeab7aa20f63124b		 pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC6 60168 bytes

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