The following location and file:
https://www.gnu.org/software/octave/download.html
https://ftpmirror.gnu.org/octave/windows/octave-5.2.0_1-w64-installer.exe
I have not yet reported this as a false positive candidate to McAfee, as I
wanted to wait on the reaction in this forum.
this thread started with a similar conversation over the weekend, regarding different files in the installer and also mcafee product. do you get the same warnings about the zip or 7z file? bundled executables are notorious for setting off false positive warnings in virus scanners. This past weekend I downloaded and scanned both zip and executable files with no detections.
it sounds like a recent mcafee update is setting off false positives. I'd recommend following the false positive reporting procedures.
in the meantime, you can check the non executable packages. You can always compile from source if you're set up to do so, then you dont have to trust any precompiled package.