Malicious PDF — malware analysis report

Static analysis result for SHA-256 88124a83330a0104…

MALICIOUS

PDF

99.8 KB
MD5: d9a9913a2c16840eccdc8c36bb10e7c5 SHA-1: 4aa54f77f1d3d460147f653745dd6c610c41bca8 SHA-256: 88124a83330a01045e22161a062d58c4dc87443925c3b25b43f1799e4a85fa9f
116 Risk Score

Malware Insights

MITRE ATT&CK
T1203 Exploitation for Client Execution T1566.001 Spearphishing Attachment

The PDF sample contains a critical heuristic indicating exploitation of CVE-2010-0188, a known vulnerability in Adobe Reader's handling of XFA forms. This exploit is designed to achieve arbitrary code execution. The presence of an embedded file and ML classification further support its malicious nature. The benign URLs are likely decoys or unrelated to the exploit.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • 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 script payload in PDF stream low 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 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
924373b907350d04b9ca5cc34d22487e688e0eaa9567d5ab4cf08f7aed1e8c9f		 pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC6 101463 bytes

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