Why did I got a PR5 for a site/domain I never really used?

So I registered this site around 1 year ago. It was part of some project, I uploaded around 300 videos on YT watermarked with this domain, and the vids had another link in their description. After a while, I redirected the domain to some CB affiliate link, and after that I saw my site marked as a potential risk ( you know when you visit some site and Google tells you if you want to proceed at your own risk or not). But months passed and now my site is clear, has a fresh WP blog install with no content whatsoever. (Also, I never did SEO for this)

So I checked now my site for some reason, and the Chrome PR checker plugin said PR5. I thought it should be some mistake, so I checked 5 different PR checkers, all stated that it was PR5.

I have no idea how this happened, and I know that some of you will say that PR these days doesn't matter. Well okay, whatever, but this helps if I'd ever want to sell the site (not planning to however) and for other stuff.

What should I do now to be sur ethat the PR won't go down? If I'll make a site, with articles, content everything and such ~ what is going to happen? And my most curious question, how come this site got its PR5?

When I registered the domain, it was new, not expired, and never registered again by someone else.

Anyone to clear me up?

There must be some backlinks pointing to it. Check with ahrefs or Majestic SEO to see if there are any high PR backlinks pointing to it that you are not aware of.

Its happends it must not be a high volume search keyword domain i have some sites just for backlinking to my main sites but in few days sites ranked!!NO SEO just some basic youtube videos with my domains!!or even tho i create some sites i dont do no work on them whats so evers but they still rank..

I think I actually bought a dropped domain or something, as I finally found some records about the site, heading back to 2004. But ahrefs doesn't show anything about the site or such. Now I want to build content for it, but I don't know what to be careful at to now lower its PR.

What is the PR of the CB link you redirected your domain to?

(I'm not actually sure of CB links are 301s or 302s, but it could be a factor)

Check wayback machine for what content it had earlier and put that up again.

pm me the link of this website. i can solve this mystery.

Oh this is easy-peasy. I always do this with old domains I brought. Go to waybackmachine and check the site. If it has a record, then just copy the entire site from the latest date (before your purchasing of domain). No need to setup WP (you can if you want), just copy and paste the html code from waybackmachine (needs just a few code clearing...won't take up more than 5 minutes).

If waybackmachine doesn't have a record, then check on screenshots.com, and if you found a image their...you can create the same content again by writing manually.

@Z0mbie Don't think this is the case, that site didn't had any PR and on top of that it was doing some malicious things as it affected my site (as I said above, my site was classified as a potential risk due to that other site, but now it's clean)

@puneetas3 well the waybackmachine couldn't find any, but the screenshots.com did showed me some pics (as I checked it earlier), but all are similar and like the pic bellow:



This was from 2005, but the other ones from 2004 and up to 2008 are same, just another template/text ~

I wonder if the PR will drop as I didn't used this site for the past year (as I registered it 1 year ago, I only redirected it to that CB link for a few months until my domain was classified as a potential threat/risk) and what should I do now.