BallroomDJ 4 does not have any viruses or malware in it.
MicroSoft's Windows Defender's online anti-virus check will mark novel, small programs as a virus. In BDJ4, this includes the installation extractor and the BDJ4 launcher. Other anti-virus programs will probably have similar issues.
I can submit false positives to MicroSoft, and they will fix their database. But many other anti-virus companies do not have a method where false positives can be submitted. And there are far too many anti-virus products for me to do so.
If you have a false positive for BDJ4, and use Windows Defender, let me know, and I can get the false positive cleared.
For other anti-virus products you will need to submit the false positive yourself, or mark BDJ4 as safe on your computer.