Potential Malware in common.inc.php File Detected by Wordfence

[SYSOPCLP]

Hello,

I've encountered an issue where Wordfence, a security plugin for WordPress, has flagged a file within my HESK installation as potentially malicious or unsafe. The file in question is common.inc.php located at /home/umhlsxtd/public_html/soporte.mywebsite.cl/inc/.

Wordfence has identified the file as a possible backdoor with the following details:

File Name: /home/umhlsxtd/public_html/soporte.mywebsite.cl/inc/common.inc.php
File Type: Not a core, theme, or plugin file from wordpress.org.
Details: The file appears to have been installed or modified by a hacker to perform malicious activity. The matching text in this file is: $id = $id[0].$id[1].$id[2];.
Issue Type: Backdoor:PHP/StringsConcat.13658
Description: The file contains obfuscated concatenated strings which are often a sign of malicious intent.
I have not made any changes to this file myself, and I'm concerned about the security of my HESK installation. The scan result was flagged on 11/02/2023 at 09:22.

Could you please provide guidance on how to proceed with this? Is this a known issue, or do you have any recommendations for verifying the integrity of the HESK files and ensuring the security of my support ticket system?

Thank you for your assistance.

[shddcit]

For a personal question, see here:
viewtopic.php?p=29397&hilit=common.inc.php#p29397

and here:
viewtopic.php?f=13&t=7072

[SYSOPCLP]

Thanks for your quick response