I managed to solve it. It was a font and encoding problem. Just followed tutorial here, but change <pdfEncoding>UTF-8</pdfEncoding>
to <pdfEncoding>Identity-H</pdfEncoding>
in fonts.xml
<fontFamilies>
<fontFamily name="FreeUniversal">
<normal>/home/moien/tahoma.ttf</normal>
<bold>/home/moien/tahoma.ttf</bold>
<italic>/home/moien/tahoma.ttf</italic>
<boldItalic>/home/moien/tahoma.ttf</boldItalic>
<pdfEncoding>Identity-H</pdfEncoding>
<pdfEmbedded>true</pdfEmbedded>
</fontFamily>
</fontFamilies>
Now I have another challenge to solve, making font URL relative!