For install AntiBot links you need to create some heard code . No problem I will show you everything . To do it be careful . Please get a backup your site then start . CodeBlock is not work so I give some code raw link .

First open Notepad++ or download it from Here .
Now download Antibotlinks.zip
Now extract the downloaded antibotlinks.zip. Upload the antibotlinks.php to /libs.

Now open index.php with Notepad++ from your website root

Press CTRL+F and find $data['captcha_info'] = $captcha;

Add the following lines of code after:

    # AntiBotLinks
    require_once('libs/antibotlinks.php');
    $antibotlinks = new antibotlinks(true);// true if GD is on on the server, false is less secure
    if (array_key_exists('address', $_POST)) {
      if (!$antibotlinks->check()) {
        $antibotlinks->generate(5, true);// number of links once they fail to solve min 3 - max 5, the second param MUST BE true
      }
    } else {
      $antibotlinks->generate(3);// initial number of links min 3 - max 5
    }
Then find $data['captcha_valid'] &&
And add the following lines of code after it:

       # AntiBotLinks
       $antibotlinks->is_valid() &&
Now open yoursite.com/templates/YOURTHEME/index.php
Add the following lines of code before </head>:

Code is here : http://pastebin.com/raw/CUWQgKYh

Look for:

<?php if(!$data[“captcha_valid”]): ?>
<p class=”alert alert-danger”>Invalid captcha code!</p>
<?php endif; ?>
And add the following lines after it:

Code is here: http://pastebin.com/raw/qdWRRZ4i

Then after the next </div> add:
Code is here: http://pastebin.com/raw/XPbgifYr

Between <form> and </form>, insert these lines of code five times:
Code is here: http://pastebin.com/raw/jtiC01vA

This is where the links will appear.

Finally find and delete these lines of code:

<div class="col-sm-offset-4 col-sm-4">
 <input type="submit" class="btn btn-primary btn-lg" value="Get reward!">
</div>
Good job you finished the hole process . Now it will work .