As is a nice arbitrage if you have a RUB bank account and can FX RUB->USD and transfer the USD back onto Binance.
Or are Binance restricting RUB withdrawals?
1. There's a good chance that at the moment you get those rubles in your hand they'll worth even less than your "investment".
2. I guess that you can withdraw rubles only if you have account at one of the few banks not affected by the SWIFT blocking.
I find this an overly risky "business opportunity".