Automated translation (from Russian):
"Found iphone 6 plus. I want to find the owner
Found the phone. I think it was stolen, but it was thrown away because of the password. The phone has a password and no SIM card. model A1524 - iPhone 6 plus
How can I find the owner? I wrote about it to the city communities. There is no answer yet"
You can turn the phone over to a lost and found department where you found it or to the police – in the hope that the owner might come looking for it. Apple doesn't get involved with lost and stolen iPhones, and won't give you the owner's contact information, even if they know it.
Or you can recycle it.
It sounds like the phone is Activation Locked ("Locked to Owner"). You cannot bypass Activation Lock, and so for you, this phone will forever be a "brick."