Malicious PDF — malware analysis report

Static analysis result for SHA-256 04d50ab49ecd09c3…

MALICIOUS

PDF

79.2 KB
MD5: c4a1a3ef9ea76a1d62ad98d491ad34e7 SHA-1: 88a5ee4a0fa18ef302d4d73e4406c67f664ddc91 SHA-256: 04d50ab49ecd09c35a39b3d69e10eb0c5a286cd01af255ddb2f565094cfe4b0e
116 Risk Score

Malware Insights

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

This PDF file is flagged as malicious due to the critical finding of CVE-2010-0188, an Adobe Reader exploit targeting XFA forms. The presence of an embedded script payload further supports the likelihood of malicious intent, suggesting the exploit is used to download and execute a secondary stage. The ML classifier output of 0.999992 strongly indicates maliciousness.

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
bdcab9e8421447ef7db8b1080b8742032301a78247dbd52d819d4bcac64a3a26		 pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC6 80313 bytes

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