Malicious PDF — malware analysis report

Static analysis result for SHA-256 6e74362aff272004…

MALICIOUS

PDF

79.5 KB
MD5: 2335f899dd12c96e2baf3866ffc06bdd SHA-1: 8ef16401c14dcf1f9eaa7d00638bd7191f46d29f SHA-256: 6e74362aff2720044e367fd923c4511a365e473d28faf0b770492968a5e53430
116 Risk Score

Malware Insights

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

The sample is a PDF file that contains an embedded script payload and triggers the CVE-2010-0188 exploit. This exploit is known to be used for arbitrary code execution, typically to download and run a second-stage malicious payload. 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
e3b21dd62bc6a150f1d51dbe4a22fe72dc339e4366b2990e486a01416587d1d3
pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC6 80642 bytes