Modifying PDF Links Behaviour

If you want to remove the links regarding Export to PDF from your instance, you can make changes to the underlying velocity templates to remove the options from the list.

From: <confluence-install>/confluence/pages/viewinfo.vm
Remove this code: 

<td nowrap>
      <a href="$req.contextPath/pages/doexportpage.action?pageId=$confPage.id&type=TYPE_PDF" rel="nofollow">$action.getText('pdf')</a>
      <a href="$req.contextPath/exportword?pageId=$confPage.id" rel="nofollow">$action.getText('msword')</a>
      </td>

Disabling export to PDF

From <confluence-install>/confluence/template/includes/macros.vm:

#if ($sitemeshPage && $req && $pageId && $permissionCheckDispatcher.isPermitted("/pages/doexportpage.action?pageId=$pageId&type=TYPE_PDF"))
              <a href="$req.contextPath/pages/doexportpage.action?pageId=$pageId&type=TYPE_PDF" rel="nofollow">
              <img src="$req.contextPath/images/icons/attachments/pdf.gif" height="16" width="16" border="0" align="absmiddle" title="$action.getText('export.as.pdf')"></a>
          #end