WordFence detected suspected malware

I have had the exact same scenario and issue as Jim. I found the link in the file on my server… it’s in the linkpicker area (see below). Please advise how we should proceed in fixing this and thanks in advance for your help.

   * The linkpicker method renders a linkpicker element that allows you to select a link to a post type or taxonomy type of your choice
         * @param array $element the array holds data like type, value, id, class, description which are necessary to render the whole option-section
         * @return string $output the string returned contains the html code generated within the method
         *
         * @todo: currently only one linkpicker per modal window possible
         */
		static function linkpicker($element)
		{	
			//fallback for previous default input link elements: convert a http://www.link.at value to a manually entry
			if(strpos($element['std'], 'http://') === 0) $element['std'] = 'manually,'.$element['std'];
			
		
			//necessary for installations with thousands of posts
			@ini_set("memory_limit","256M");
			
			$original = $element;
			$new_std = explode(',', $element['std'], 2);