This contains audio from Far From Home, some generic audio stabs, and a muffled recording of a few words from a voice that at least sounds like Venom. This has come out hours after leaks of what the scene is (supposedly anyway) have come out. So it "matching up" with the leaks doesn't really mean anything. It would not have been difficult to put together after those leaks came out, especially with the space of all these hours.

I don't think a muffled Venom-esque voice would be too hard for some people to fake. It also cuts off before there would be any space for the supposed "lick" that the leaks describes, nor does it contain any sound effect for that. I'm not sure why (as of right now anyway) people are so quickly believing this is real.