Add a (linked) test case for bug 1108753 (PR 5276)

When submitting PR 5276 there wasn't a good PDF file to include in the test suite. However, with https://bugzilla.mozilla.org/show_bug.cgi?id=1108753, we now have a better source for a test file, hence this patch.
Merge pull request #5532 from Snuffleupagus/test-pr-5276

Add a (linked) test case for bug 1108753 (PR 5276)