Welcome to the Make community!

You can use a Text Parser “Match Pattern” module with this Pattern (regular expression):
\?idref=(?<idref>[^&]+)&cid=(?<cid>[^&]+)&utml=(?<utml>[^&]+)
Proof
https://regex101.com/r/zQjzHw
Important Info
Global match must be set to NO!
Output

For more information, see Text Parser in the Make Help Center:
Match Pattern
The Match pattern module enables you to find and extract string elements matching a search pattern from a given text. The search pattern is a regular expression (aka regex or regexp), which is a sequence of characters in which each character is either a metacharacter, having a special meaning, or a regular character that has a literal meaning.
Hope this helps!
You can copy and paste this module export into your scenario. This will paste the modules shown in my screenshots above.
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Copy the code below by clicking the copy button when you mouseover the top-right of the code block

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Enter your scenario editor. Press ESC to close any dialogs. Press CTRLV to paste in the canvas.
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Click on each imported module and save it. You may need to remap some variables.
Modules JSON Export
{
"subflows": [
{
"flow": [
{
"id": 93,
"module": "regexp:Parser",
"version": 1,
"parameters": {
"pattern": "\\?idref=(?<idref>[^&]+)&cid=(?<cid>[^&]+)&utml=(?<utml>[^&]+)",
"global": false,
"sensitive": true,
"multiline": false,
"singleline": false,
"continueWhenNoRes": false
},
"mapper": {
"text": "www.teste.com.br/mensagem?idref=134&cid=654fas3&utml=g4h24g"
},
"metadata": {
"designer": {
"x": -811,
"y": -1714,
"messages": [
{
"category": "last",
"severity": "warning",
"message": "A transformer should not be the last module in the route."
}
]
},
"restore": {},
"parameters": [
{
"name": "pattern",
"type": "text",
"label": "Pattern",
"required": true
},
{
"name": "global",
"type": "boolean",
"label": "Global match",
"required": true
},
{
"name": "sensitive",
"type": "boolean",
"label": "Case sensitive",
"required": true
},
{
"name": "multiline",
"type": "boolean",
"label": "Multiline",
"required": true
},
{
"name": "singleline",
"type": "boolean",
"label": "Singleline",
"required": true
},
{
"name": "continueWhenNoRes",
"type": "boolean",
"label": "Continue the execution of the route even if the module finds no matches",
"required": true
}
],
"expect": [
{
"name": "text",
"type": "text",
"label": "Text"
}
],
"interface": [
{
"type": "text",
"name": "idref",
"label": "idref"
},
{
"type": "text",
"name": "cid",
"label": "cid"
},
{
"type": "text",
"name": "utml",
"label": "utml"
}
]
}
}
]
}
],
"metadata": {
"version": 1
}
}