The tester is useful to verify with any of the PDFs found previously:

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If we do not have access to the server, we can almost always apply it from the CMS that manages the site: this is clearly an advantage. The problem is that it does not work for PDFs because they do not have HTML code .

Removing URLs in Search Console – This method kuwait mobile database partially fixes the problem, but we do not recommend it to fix the root problem.
deleted urls - block pdf's

The robots.txt meta file . It is simple to apply, you only need FTP access to the site server. Within Search Console there is a tool to test the changes and then download the final robots.txt file to upload to the root of the site. Simply adding the line “Disallow: *.pdf” blocks the crawler access .
Robot.txt - Block PDFs


pdf disallow - Block pdf's

Conclusion
It is highly recommended to check the pages that receive traffic on a weekly basis in Search Console to detect unwanted indexing. Google dedicates a great deal of resources to improving its robot: it scans the content of the millions of websites that exist every day . It is part of our job to make sure that it is on the right track.