How to avoid bots to crawl Spammy urls

[Roy4u]

I am facing a problem with one of the site <snip>. The problem is after the domain name some urls will appear with text torrent. This is happening from the time the website is migrated to wordpress. Though all such bad urls are now showing 404 error and blocked manually through webmaster, in analytics, I could still see such url appearing in landing page list and this is increasing the bounce rate. what can be done?

[edited by: goodroi at 12:05 am (utc) on Sep 5, 2017]
[edit reason] Welcome to WebmasterWorld, please go read & follow the community guidleines [/edit]

[goodroi]

I wouldn't focus on this. There will always be low quality auto-generated sites & referral spamming. Focus more on increasing value and worry less about fighting low level annoyances. Improving your site will distance you from the internet trash and make you much more money.

[seoskunk]

I agree with goodroi, have you checked in analytics where the visits are coming from? ie search,referal,social,direct

[keyplyr]

Your Wordpress account has been compromised.

Contact your host and have them run their virus software. Then update your Wordpress version immediately.

Get this done fast, before your site gets reported as being dangerous.