No , etherescan isn't scam , but your pc was infected with clipboard virus or something like that because of downloading coin wallet that having virus inside, because my pc was infected to before this ( about 4-5 days ago ) copy address from my metamask when paste its show other guys addres,
to fix your problems, use
MalwareByte ( i use this to fix my problem ) you can download it for free here
https://malwarebytes.com/ this is recommend scanners to scan your computer