Not trying to be dismissive or anything but you put in way too much effort into something that should have been obvious from the get go.
Clue #1: the message appears instantly in the chat window after you add the bot, no time for typing
Clue #2: the bot is asking you to add his friend. This should immediately be a warning sign
Clue #3: The link isn't steamcommunity.com
I get at least one or two friend requests from bots every day that I bump my tf2outpost trades. I've reported maybe 50 accounts so far, but they just keep coming