We determine that the trailhead is @APEXGROUPCS, and search it up on twitter. This results in a twitter account with a few posts on it, sounding suspicious.
In the twitter profile link is a link to a yt video: https://youtu.be/r-nD1tNgBIE and when watching, we find there's some modification to the captions, where a URL path ending can be found. The website apexgroupcs.com is in the description.
The trailhead starts on the @ARGCreatorTools twitter, posing as an image with seemingly gibberish words. When you isolate letters that seem peculiar (they have letters attached to them) you get "APEXGROUPCS" as an outcome. The only words attached to the image in the post is "@".