/usr/lib/ncbi/mod/libaxf.so.1 is in sra-toolkit 2.1.7a-1ubuntu2.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/lib/ncbi/mod/libaxf.so.1.0.6
/usr/lib/ncbi/mod/libaxf.so.1.0.6