It is very dangerous to install untrusted app directly via APKs on your Android device.

I took the time to scan this one in particular for malware and confirmed my suspicion that it is not to be trusted. See the report here: https://apkscan.nviso.be/report/show/e62751bbf0878d52d7506fcd0ab570ee

Here are the virus results in particular

Virus Total scan results
Bkav: Android.Adware.Fictus.db.49FA
ESET-NOD32: a variant of Android/Inmobi.C potentially unsafe
Fortinet: Android/Generic.S.56808C!tr
WhiteArmor: Android-PUA.SN-Sure.30572319555654.[PUA]

My advice is do not down this file or open it on your Android device.