is MacCleaner.pkg safe?

The virus alert thing is almost always a scam to try to get you to buy. Almost anything on a Mac with the word cleaner in it will cause more issues than it resolves. I would delete it and if you have any further issues with it, use the following. It has a very good reputation. Free Cyber Security & Anti-Malware Software | Malwarebytes

I have just come across the same thing. There was a beep, and a new window opened in Safari referring to viruses and malware and saying that my Mac was infected. The window looked just like these pages, with the same black banner as appears at the top of this page and with the "Apple Care products" logo. Clicking anywhere on the banner resulted in MacCleaner.pkg being downloaded. I cleared the downloads. I also searched in "Finder" for maccleaner.pkg and located a file (I didn't note where it was) which, on basis on the comments in this conversation, I sent to trash. Strange thing though - even though I only downloaded today, the file is recorded as having been modified on 18th April, i.e. last month.

TO CORRECT THE MISSPELLINGS:

Hi. Sorry for the long delay in responding. I didn't install it. I moved it to trash (and it's still there). I haven't had any problems and haven't had any recurrence of the "virus alert".

The fact that it reports you have "viruses" shows how ignorant of Macs the developers of that app are. There are no viruses that affect Mac OS. Do not install.

Did you get rid of it? Was it harmless or did you got any problems with it? Got the same problem now and don't know what to do or if its not that big deal.

Hi. Sorry for the long delay in responding. I don't instal it. I moved it to trash (and it's still there). I haven't had any problems and haven't had any recurrence of the "virus alert".