How to revoke my old paper from a fake journal (waset.org)? It was like more than 6 years ago, I was an undergrad senior in a south asian university, we did not have much internet connectivity back then. 

I wanted to publish something on a journal/conference to get a feedback on my undergrad thesis (I was curious to know about the quality of my work) and submitted a paper to one of the journals listed on that notorious waset.org.

I was young and novice, above all, I had no idea that people could do such a scam with intellectual issues like "research papers", anyway. 

but the thing is that when I search my name on a web search engine (google, duck-duck-go etc.), that biggest mistake of my life still comes up on the first page, I am now near the end of my PhD and looking for an academic/research job. So, I wanted to communicate with them so that I can request them to revoke my paper.

However, their site does not provide any specific contact address/person to whom I can discuss with. 

I have no wish to resubmit that to any other place, after 7 years now I can understand that my undergrad thesis work was too "trivial" to be "published". 

Is there anyone who is in the similar situation? and is there any way to retract the paper from waset.org ?

any pointer will be greatly appreciated. 

Apology: I am feeling very uneasy to share the link of my paper, but their website is provided.
I think there is something you can do to help yourself in this situation.

You could contact Google and ask if they would remove this particular search hit from their cache. As a result your paper will not come up when people search your name in Google. Of course your paper will still exist in their server but I think that a major part of the potential damage can be avoided since I would believe that people do not intentionally go the predator publishers website to search anyones articles.

Here are the instructions to contact Google: https://support.google.com/websearch/troubleshooter/3111061?hl=en