Ninja Ripper

Not sure if this is the right place to ask this

However I was wondering
How safe is Ninja ripper to use?
I currently have a mobile game I wanna get models from (more on that is in another thread).
Since Im not sure ill be able to rip the models right from the games files like I want
I was considering Ninjaripper
(I play the mobile game on a PC with an emulator)

Now is where I have questions
My computer is rather new
Im not trying to install any programs that arent safe
I downloaded Ninja ripper and my antivirus immediately listed it as an infected or dangerous file

Is this a false flag? Ive seen people go on about how good ninjaripper is..
is it safe to download?

Thanks, any feedback is helpful