Why does some libraries like libkave8.so.4 show as not found in ldd output?

Issue

• The ldd output is as follows, why does that happen?

[root@example ~]# ldd /path/to/libKaspersky.so
  [.............]
        libkave8.so.4 => not found
        libkavesd.so.4 => not found
        libkavess.so.4 => not found
        libkavessi.so.4 => not found
  [.............]