I found a file in my terminal named ~$E THINKERS.docx, I tried to removed it using the rm command but it keeps telling me no such file found. I think its a rootkit, since my antivirus doesn't detect it. Anyone can help me remove it?
Your question is lacking details...
I suppose you are working in Unix-like terminal and typing: rm ~$E THINKERS.docx and the expansion fail (look for "Tilde Expansion" in bash(1)).
Could you try: rm '~$E THINKERS.docx'?
If it were a rootkit, you most probably wouldn't see it...