Malicious PDF — malware analysis report

Static analysis result for SHA-256 70ecc281c34f3b7a…

MALICIOUS

PDF

99.6 KB
MD5: f18915babe7ed9b30ba8a5505591c673 SHA-1: 2590f97a8faac5b93a62a5c70d13e9a4f9a15d8e SHA-256: 70ecc281c34f3b7a396863417e39786dd8fb2162767fc92fa59bb1ec466980e4
116 Risk Score

Malware Insights

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

The PDF file contains embedded XFA form data and triggers the CVE-2010-0188 exploit, which is known to target Adobe Reader. This exploit is designed to achieve arbitrary code execution, typically used to download and run additional malicious content. The ML classifier strongly indicates maliciousness.

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
7c9a969f772259f18fd50d7c33d61aaf40892d3c9349749d67c35874fa4a9a39
pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC6 101264 bytes