INDICATOR_PDF_IPDropper

YARA detection rule by ditekSHen · NOASSERTION

Detects PDF documents with Action and URL pointing to direct IP address

rule INDICATOR_PDF_IPDropper {
    meta:
        description = "Detects PDF documents with Action and URL pointing to direct IP address"
        author = "ditekSHen"
    strings:
        $s1 = { 54 79 70 65 20 2f 41 63 74 69 6f 6e 0d 0a 2f 53 20 2f 55 52 49 0d 0a }
        $s2 = /\/URI \(http(s)?:\/\/([0-9]{1,3}\.){3}[0-9]{1,3}\// ascii
    condition:
        uint32(0) == 0x46445025 and all of them
}

[[ currentRule.title && currentRule.title.length > 60 ? currentRule.title.slice(0, 60) + '…' : currentRule.title ]]

aa333c3a-654d-4f37-be94-a7b0f2c01d0d

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Executable code, not a declarative rule

This submission is arbitrary [[ currentRule.format ? currentRule.format.toUpperCase() : '' ]] code, not a declarative detection rule — review it as you would any script before running it, and note that it cannot be safely aggregated or auto-executed alongside YARA/Sigma/Suricata/CRS rules.

Rejected pattern present

[[ reason ]]

What does this mean?

Format & documentation suggestions

Not a security issue — this rule is valid and was accepted as-is. These are optional fields/conventions its own format recommends, mainly affecting its quality score and how well it documents itself for other reviewers.

[[ reason ]]

What do these messages mean?

[[ currentRule.title && currentRule.title.length > 60 ? currentRule.title.slice(0, 60) + '…' : currentRule.title ]]

[[ currentRule.title ]]

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