Spam/Blackhat SEO only when shared

Hello –

Over the past week or so, my site (https://wrongfairway.com) has been showing signs of being hacked, but not in a way I’ve seen in researching the problem.

Now, I know not to include the code that comes up here, but it’s basically a bunch of jibberish about male-enhancement meds at the top of the body of each post. The thing is, accessing the site directly, there’s no sign of the spam – it only shows up when I share the post on Facebook (in the little description or preview box below the link) or when it comes across my feedly – the beginning of the post has the long male-enhancement jibberish before getting into the actual post.

A Sucuri sitecheck shows that it is categorized as “site with warnings” and has brought up the mentioned code. What I am wondering is how to deal with this?

Is this something different than other blackhat SEO spam I’ve seen or should I go through the protocol that Emis has posted to clear out everything?

I’m not great with all this code hacking/dehacking stuff, so any and all help is much appreciated