It could be a pack related to the popular "Buenos Dias, Fuckboy" meme or other humorous morning greetings often shared in forums or group chats.
To see what's inside, you will need a utility that supports the : Windows: 7-Zip or WinZip . Mac: The Unarchiver or Keka . Buenos Dias.7z
It likely contains a set of "Buenos Días" (Good Morning) postcards or stickers, which are widely shared on social media. It could be a pack related to the