Malicious PDF — malware analysis report

Static analysis result for SHA-256 14dc36a996e2aa0a…

MALICIOUS

PDF

4.2 KB
MD5: 77afc4af0acb71b158231f7f36a0cff3 SHA-1: aea9adf4a9c68756d3f7f8bddff982d6305be936 SHA-256: 14dc36a996e2aa0abd67da76e9bddfeebd7f53ac680f77d0ed2548c1d2c44d44
116 Risk Score

Malware Insights

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

The critical heuristic firing for CVE-2010-0188 indicates the sample is designed to exploit a known vulnerability in Adobe Reader. The presence of an embedded script payload and an embedded file further supports this, suggesting the PDF is a dropper for malicious code. The ML classifier's high confidence score reinforces the malicious nature of the file.

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/1.0\
    • 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
62d4bc014993cea6f94dc55a5dbc094ab153d0f495ca70407990331518f1d1df		 pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xEA 12950 bytes

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