chromium/chrome/test/data/extensions/api_test/tabs/pdf_extension_test.html

<script>
onbeforeunload=function(){
  document.write('<b>Welcome to {Some Website}</b>');
  document.title='OtherWebsite.ltd';
};
</script>
<embed type="application/pdf" src="data:application/pdf;base64,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" width="640" height="480">

<!--

Source of the embeded PDF.

-------------------------------------
%PDF-1.7

trailer
<<
/Root 1 0 R
>>

1 0 obj
<<
/Type /Catalog
/Pages 2 0 R
>>
endobj

2 0 obj
<<
/Type /Pages
/Count 1
/Kids [3 0 R]
>>
endobj

3 0 obj
<<
/Type /Page
/Parent 2 0 R
/MediaBox [0 0 400 400]
/Resources <<>>
/Annots [4 0 R]
>>
endobj

4 0 obj
<<
/Type /Annot
/Subtype /Link
/Rect [0 0 400 400]
/A 5 0 R
>>
endobj

5 0 obj
<<
/Type /Action
/S /URI
/URI (http://www.facebook.com:83)
>>
endobj

%%EOF
------------------------------------------

-->