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https://issues.apache.org/jira/browse/PDFBOX-2108?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14030117#comment-14030117
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John Hewson commented on PDFBOX-2108:
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I don't see any arabic in Acrobat - do you have a font pack installed?
> Type0 CFF Font with identity encoding rendered incorrectly
> ----------------------------------------------------------
>
> Key: PDFBOX-2108
> URL: https://issues.apache.org/jira/browse/PDFBOX-2108
> Project: PDFBox
> Issue Type: Bug
> Components: FontBox, Rendering
> Affects Versions: 2.0.0
> Reporter: Petr Slaby
> Attachments: Type0FontEncoding.patch, font0-arabic.pdf,
> font0-arabic1.jpg, font0.pdf, font01.jpg
>
>
> The attached pdf files were created in iText. Both print two lines containing
> the text "Hello World!". The second line is printed using a Type0 CFF font
> with encoding Identity-H. One of the documents uses a western languages font
> (font0.pdf). The other one (font0-arabic.pdf) uses an Arabic font, but this
> font contains latin letters, too. Expected rendering can be seen in Acrobat,
> the wrong rendering from PDFBox created via PDFToImage is attached.
> I have experimented with the problem and tried to fix it, proposed changes
> are attached in Type0FontEncoding.patch. However, I came to the result just
> by experimenting, without really reading the PDF specification. Also, I am
> getting lost in the many mappings internally used in PDFBox, so an expert
> view is for sure required.
> Note: I have seen several issues where font encoding is already discussed,
> but I was not able to decide whether this exact problem is already described
> in one of them. Sorry, if this is a duplicate.
> Note: Even after fixing the encoding problem, the font size of the second
> line in the "Arabic" example is wrong for some reason. This is probably a
> different issue and I did not try to analyze it yet.
>
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