Malicious PDF — malware analysis report

Static analysis result for SHA-256 08f36a1ddb1d7f20…

MALICIOUS

PDF

79.0 KB
MD5: c3cb1bc612ada19692b7e2241346e16c SHA-1: f9eb9e872a0bc673a5e90317298f0bb6dcb1e1dd SHA-256: 08f36a1ddb1d7f202a3f0b7af3573f70125962e94d65b337015e07eec9ff4c08
116 Risk Score

Malware Insights

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

The PDF sample contains embedded JavaScript and exploits the CVE-2010-0188 vulnerability in Adobe Reader's XFA forms. This exploit is designed to download and execute a second-stage payload, indicated by the embedded script payload heuristic. 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
3d2a5425057f94f0466917115bb40a1923a4b07d87af39b37b40b65d5094efda
pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC6 80131 bytes