[dylz]

There is no need to side-install; just go on the play store and search for some bullshit spam phrase like 'unblock pubg' and you'll get your pick of dozens if not more of ad-filled, malicious "VPN" that does MITM and ad injection into all pages.

You'll literally get thousands of results of spam apps just directly named "VPN FOR PUBG" or "VPN UN BLOCK PUBG GROUNDS BATTLE PLAYER GAME CALL OF DUTY SPONGEBOB ESPONJA BOB", all of which are malware.

I just checked for myself, and this is pretty much how it is. The publishers behind this garbage have hundreds of uploaded apps, all of which are effectively the same one but with different names like "UNBLOCK P U B G PAKISTAN" or "VPN FOR PUBG PLAYER FORT NIGHT", and a random one loaded virtually every single data-exfiltration SDK known to man, and several known to animals.