We do not have a download file for the latest version (4.3.0), but you can try downloading it from the developer's site
Download version 4.0.16.9723 from Mac Informer
Version: 4.0.16.9723
Date update: Apr 29, 2017
File name: maltegoxl.v4.0.16.9723.dmg
Size: 77.4 MB