i just downloaded app, it's clean at my side.
i guess you got malware from somewhere else, not from ad2bitcoin app.

i strongly suggest you clean up your pc, format it if possible, never login into your wallet until you be sure your pc is cleaned up.
to keep always safe, use two laptops, one for crypto funds and other for daily uses or web apps.

please remove new topic you opened and keep discussion here. (edit title to 'delete' and moderator will delete your topic.)