My Eth automatically got transferred

self.ethereum1m ago
0.00757 Eth automatically got transferred to 0x666666683a047a04a81d8a71582dd8437997fed5 8 days ago. Here is the transaction hash 0xdb555d8e83869cff6a3f0a89206ba1e1b4d204a546af2361fc593e5971ea6820 . I don't remember even entering my wallet address in any website. All I remember is, there was a transaction which was pending to get cancelled, and when I opened metamask it's status showed dropped. Can someone please help and explain what is happening.