Malicious PDF — malware analysis report

Static analysis result for SHA-256 6f8c258c1b1701f0…

MALICIOUS

PDF

79.0 KB
MD5: 20ca56caeae637b734e70ebee7923511 SHA-1: 33ce3e21e1fc0e99e3a2eec5400b4e5097cd79cf SHA-256: 6f8c258c1b1701f0e754b49060ac4f457adb7a0ee229d0f7753ba384db211829
116 Risk Score

Malware Insights

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

The PDF sample contains an embedded XFA form and triggers the CVE-2010-0188 exploit, which is known to target Adobe Reader. This exploit is used to gain execution and likely download a secondary payload. The embedded script is obfuscated, but the exploit itself is a strong indicator of malicious intent.

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
ef3828eb15e284f78b569ce8146978d299fdd1d9ab94468a6a0186d79a76bd95
pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC6 80169 bytes