/usr/share/hashcat/rules/hybrid/append_ldus.rule is in hashcat-data 3.30-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 | $a
$b
$c
$d
$e
$f
$g
$h
$i
$j
$k
$l
$m
$n
$o
$p
$q
$r
$s
$t
$u
$v
$w
$x
$y
$z
$0
$1
$2
$3
$4
$5
$6
$7
$8
$9
$A
$B
$C
$D
$E
$F
$G
$H
$I
$J
$K
$L
$M
$N
$O
$P
$Q
$R
$S
$T
$U
$V
$W
$X
$Y
$Z
$
$!
$"
$#
$$
$%
$&
$'
$(
$)
$*
$+
$,
$-
$.
$/
$:
$;
$<
$=
$>
$?
$@
$[
$\
$]
$^
$_
$`
${
$|
$}
$~
|