Malicious PDF — malware analysis report

Static analysis result for SHA-256 5fcdd521dd885837…

MALICIOUS

PDF

99.6 KB
MD5: 4c03f7bdbb427e6c428575497b0b30b6 SHA-1: da9a694582861e8b961ebe3ff6394b2bf4f85759 SHA-256: 5fcdd521dd885837cf54bf05d6616a70f895a8274e96ccfde5451cd9604f507b
116 Risk Score

Malware Insights

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

The PDF file exploits the CVE-2010-0188 vulnerability in Adobe Reader, which is a critical finding indicating client-side execution. The presence of an embedded script payload further supports the likelihood of malicious code execution. While no specific family is identified, the exploit and embedded script suggest a downloader or dropper functionality.

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
b1277b7fcb155e8986116052f85379aeb46e1ce71a35971b002eb4acb0369b9e		 pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC6 101287 bytes

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