Adobe Reader is a pretty reliable program. I believe there's an option for documents to be made that don't include the fonts they use, but ordinarily they do include the fonts in the document itself (so you never need a special font installed to view the file correctly). In this case, it seems, whoever made the document didn't include the font . . if so, it's not Adobe's fault.

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Casey Bessette
Westminster OPC • West Suburbs of Chicago

"It is part of the calling of the ekklesia to learn to know the love of Christ that surpasses all knowledge and also to make known within the world of science 'the manifold wisdom of God' in order that the final end of theology, as of all things, may be that the name of the Lord is glorified. Theology and dogmatics, too, exist for the Lord's sake." — Herman Bavinck, Reformed Dogmatics, vol. 1, p. 46