Malicious PDF — malware analysis report

Static analysis result for SHA-256 05ce7f1fedf24af1…

MALICIOUS

PDF

100.0 KB
MD5: 5f31e3c7cac905c00234694accb3c1ed SHA-1: 21d0783f4f28128b716b8e7ee2a43fc59d3d1b15 SHA-256: 05ce7f1fedf24af1c6a96388f6cb537627ddb9b1aaf6deb8862b5d897a5a39b2
116 Risk Score

Malware Insights

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

The PDF file exploits CVE-2010-0188, a vulnerability in Adobe Reader related to XFA forms, to achieve code execution. The presence of an embedded file and the ML classifier's high confidence score further indicate malicious intent. While the document body and scripts were not fully analyzed, the exploit itself is sufficient to classify this as a malicious document likely delivered via spearphishing.

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
359867987f7d85728c2cac70a38fe4632d98e6c8dc6ac3ead59a09e8d190a6ce		 pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC6 101607 bytes

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