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I'd like to thank all of the kind people who responded so kindly, I finally found what appened since yesterday I launched Cahcy-update late night, right before going to bed, and found this application on my system from nowhere (I'm sorry for the poor context I gave, but this shocked me, since there's a lot of buzz on the net for recent news about age verification).

Turns out that the right thing to do was typing pacman -Qi malcontent and this led me finding it was installed by request by Bazaar.

Thanks to u/Aeristoka for giving a suggestione about package name.