Note the "heur" part that means "heuristic". The file is new, the antivirus program just doesn't know about it yet and classifies it as malware using heuristics algorithms. This is true about all other links that you provided below - take a closer look at detection names. Most of them either say "heuristic" or "riskware" (potentially unwanted program/application, PUA).
Besides, for any new release antivirus programs start to immediately classify the software as riskware or even malware. This time there are very few actually. It used to be much worse with previous releases where we could easily get 20+ false positive detections on new build.
This is how antivirus software works these days - they prefer to be on the safe side and block just everything that might be dangerous (remote software is usually in this category). It usually takes a couple of weeks of sending false positive requests before the detections are removed.
And the funny part is that the Home [free] edition of BD ignores RU installer and the software itself.
Thanks for the details. Yes, apparently there is some inconsistency about this detection. Even more unusual is the fact that this version has been around for almost a year now (the last 18.104.22.168 build was released in August 2017) and only now BitDefender decided, all of a sudden, that it's "malware".
Already reported to Bitdefender as a False Positive but it didn't help.
Do you mean you reported to BitDefender that they blocked legitimate software on your computers and they refused to help? That is, they can simply "think" that you shouldn't use certain legitimate software because they say so.
Unfortunately, I don't know how we can help in this situation. How can an antivirus software vendor that cannot distinguish between good and bad software even be trusted? What if they are similarly incapable of detecting real malware when time comes and thus jeopardize security of your systems?
Note: "Simple update" was turned off in the beta but will be available in the final 6.9 release. For now, in order to remotely upgrade your Hosts to the beta version use method 2 or 3 described in the section Updating Hosts in Updating Remote Utilities tutorial.