Appears to be a malformed hex string in 3rd logical expression:

 * SUBSIG ID 2
 +-> OFFSET: ANY
 +-> SIGMOD: NONE
 +-> DECODED SUBSIGNATURE:
LibClamAV Error: cli_hex2ui(): Malformed hexstring: 1 (length: 1)
ERROR: Decoding failed (1): <<4#ib4#>0xB1B0AFBA)
ERROR: Decoding failed

-Al-

On May 25, 2019, at 13:54, Hans Morten Kind via clamav-users <clamav-users@lists.clamav.net> wrote:

Seems like evry pdf-file is marked as infected by
 Win.Exploit.CVE_2019_0903-6966169-0

I have put it into local.ign2 and restarted my clamd 
hmk