When rendering a provided PDF file the following error strack trace is thrown and the PDF is rendered with mixed up characters. According to the customer the file uses built in CID fonts with Identity-H encoding:

FINE: Could not load font dictionary class
java.lang.reflect.InvocationTargetException
at sun.reflect.GeneratedConstructorAccessor2.newInstance(Unknown Source)
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
at java.lang.reflect.Constructor.newInstance(Constructor.java:525)
at org.icepdf.core.pobjects.fonts.FontFactory.getFont(FontFactory.java:126)
at org.icepdf.core.util.Parser.getObject(Parser.java:411)
at org.icepdf.core.util.LazyObjectLoader.loadObject(LazyObjectLoader.java:73)
at org.icepdf.core.util.Library.getObject(Library.java:156)
at org.icepdf.core.util.Library.getObject(Library.java:206)
at org.icepdf.core.pobjects.fonts.nfont.Font.init(Unknown Source)
at org.icepdf.core.pobjects.fonts.nfont.Font.init(Unknown Source)
at org.icepdf.core.pobjects.Resources.getFont(Resources.java:150)
at org.icepdf.core.util.content.AbstractContentParser.consume_Tf(AbstractContentParser.java:722)
at org.icepdf.core.util.content.NContentParser.parseText(Unknown Source)
at org.icepdf.core.util.content.NContentParser.parse(Unknown Source)
at org.icepdf.core.pobjects.Page.init(Page.java:368)
at org.icepdf.ri.common.views.PageViewComponentImpl$PageInitializer.run(PageViewComponentImpl.java:1039)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
at java.lang.Thread.run(Thread.java:722)
Caused by: java.lang.NullPointerException
at org.icepdf.core.pobjects.fonts.Font.<init>(Font.java:195)
at org.icepdf.core.pobjects.fonts.nfont.Font.<init>(Unknown Source)
... 19 more