You may be seeing a black area below, instead of the pdf file content. This happens with some browsers when javascript is disabled. You can however click or tap this link to download the file, and then view it outside of the browser window.
It appears that your browser does not have a plugin to display pdf files. It may be that your browser does have such a plugin, but that plugin is disabled.
You can however right click this link to download the file, and then view it outside of the browser window.
