Malicious PDF — malware analysis report

Static analysis result for SHA-256 5cbef8355d46619f…

MALICIOUS

PDF

80.4 KB
MD5: 41d346f69472a70786805a74ca67f228 SHA-1: fd31453bed29ca8ad7e106b349bf86a846fa9596 SHA-256: 5cbef8355d46619f0dda733c50e7bd37052ccd7bcc50c742e5ede080cfcfac6a
116 Risk Score

Malware Insights

MITRE ATT&CK
T1203 Exploitation for Client Execution T1059.007 JavaScript

This PDF file contains an embedded script that exploits the CVE-2010-0188 vulnerability in Adobe Reader. The script is designed to download and execute a secondary payload, as indicated by the 'PDF_EMBEDDED_SCRIPT_PAYLOAD' heuristic. The ML classifier strongly flags this PDF as malicious, supporting the exploitation of a known vulnerability for client execution.

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
18325784a6fd6d8cccf7212a97f075d2ef763c5496f4b52737b1fa1179472a2e		 pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC6 81628 bytes

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