7 news files only in my admin account is add last night and all of this files is 0 bytes

TYPE
]
PWD
CWD
RETR
PORT
SYST

and if I scan for Trojan Horses, WHM report this

Possible Trojan - /usr/bin/GET
.

Possible Trojan - /usr/bin/HEAD
.

Possible Trojan - /usr/bin/POST
.

Possible Trojan - /usr/bin/lwp-download
.

Possible Trojan - /usr/bin/lwp-mirror
.

Possible Trojan - /usr/bin/lwp-request
.

Possible Trojan - /usr/bin/lwp-rget

.

7 POSSIBLE Trojans Detected


any idea ?