Fake pkg apps

Hello,

assuming I'm using a 5.05 ps4 (with Hen) with a new account that's never been on PSN.

is it possible to install and use fake pkg of ps4 apps (youtube,dailymotion,PLEX,etc...) ?

is there something restricting that or just a matter of finding them?
(I did find a fake pkg for the standard media player although I haven't tried it yet)

thanks