Suricata

I was created a local rule “/var/lib/suricata/rules/otx_file_rules.rules” with content:

alert http any any → $HOME_NET any (msg:“OTX - FILE MD5 from pulse COMpfun successor Reductor infects files on the fly to compromise TLS traffic”; filemd5:6103d52622c707d847e0cf41.txt; reference: url, AlienVault - Open Threat Exchange sid:411933; rev:1;)

and file “6103d52622c707d847e0cf41.txt” a put in path: /var/lib/suricata/rules/.

When I run: suricata-update --local /var/lib/suricata/rules/otx_file_rules.rules. I get error: – filemd5 file 6103d52622c707d847e0cf41.txt was not found

My machine is Centos 7. How can I fix my problems? Please