Malicious PDF — malware analysis report

Static analysis result for SHA-256 63510470a5cb78a9…

MALICIOUS

PDF

78.9 KB
MD5: 50cf18588bd5c48cc1a01d853423818a SHA-1: 110ec69e4298f2d4e9a06ddd2ff52231754ec44c SHA-256: 63510470a5cb78a9ad291931f97c5dc731185c389646b55253343a28a9a390c2
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 PDF is designed to exploit a known vulnerability in Adobe Reader. The presence of an embedded file and script payload further supports this, suggesting the exploit is used to download and execute additional malicious content. The ML classifier strongly flags this PDF as malicious.

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
f0c797c7093e8a2fe24f4e78695baa04f4ced997d77e2871c1c7cf5f8c8ab5e2		 pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC6 80013 bytes

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