We do not have a download file for the latest version (13.3.2.1), but you can try downloading it from the developer's site
Download version 13.0.1.3 from Software Informer
Scanned by 8 antivirus programs on Oct 23, 2020.
The file is clean, see the report.
Version: 13.0.1.3 (x86/x64)
Date update: Mar 29, 2013
File name: mscad2013-full-13.0.1.3-enu.exe
Size: 425 MB