As of today Binance announced the 32nd project on their launchpad. Thats why we see a sudden pump of bnb due to massive participants that will join tge token sale in preparation for the snapshot.

Check out their announcement page.

https://www.binance.com/en/support/announcement/introducing-the-arkham-arkm-token-sale-on-binance-launchpad-6ad1921b56fb4b369f9cf3e4449e62e2