This is a duplicate of bug 533944, which appears to be fixed in rawhide. Why is there a regression?

Then the pkg was never built.
repoquery --repoid=rawhide -q -R pdftk
/usr/lib/gcj/itext/itext-2.1.7.jar.so
itext(x86-32) >= 2.1.7-1
libc.so.6
libc.so.6(GLIBC_2.0)
libc.so.6(GLIBC_2.1)
libc.so.6(GLIBC_2.1.3)
libc.so.6(GLIBC_2.3.4)
libc.so.6(GLIBC_2.4)
libgcc_s.so.1
libgcc_s.so.1(GCC_3.0)
libgcj.so.10
libm.so.6
libpthread.so.0
libpthread.so.0(GLIBC_2.0)
libstdc++.so.6
libstdc++.so.6(CXXABI_1.3)
libstdc++.so.6(GLIBCXX_3.4)
libstdc++.so.6(GLIBCXX_3.4.11)
libstdc++.so.6(GLIBCXX_3.4.9)

so it looks like the isa requires was added but the file-requires was never removed

I see that the %__find_requires bug is not fixed and is still generating the weird dependency /usr/lib64/gcj/itext/itext-x.y.z.jar.so()(64bit)

So, since Requires: itext%{?_isa} is already in the specfile, we just need to get rid of the weird dependency altogether by modifying our %__find_requires hack.

This can be done by changing the line
     | sed 's@\(itext-[0-9.]*\.jar\.so\)\(()(64bit)\)\?@\1@'
to
     | sed '\@itext-[0-9.]*\.jar\.so@d'

Jochen, any objections?

Should be fixed with pdftk-1.41-24.

sorry, caused by an error of me, it should be pdftk-1.41-26.