Possible SolidPDFCreator.DLL Sideloading (via image_load)

This rule detects potential DLL sideloading of "SolidPDFCreator.dll"

SigmamediumWindowsv1
sigma
title: Possible SolidPDFCreator.DLL Sideloading (via image_load)
id: f5cf3cb2-6487-5b56-8506-64906cb6d7f2
status: stable
description: This rule detects potential DLL sideloading of "SolidPDFCreator.dll"
references:
    - https://attack.mitre.org/techniques/T1574/001/
    - https://lab52.io/blog/new-mustang-pandas-campaing-against-australia/
author: Huntrule Team
date: 2026-05-01
tags:
    - attack.persistence
    - attack.privilege-escalation
    - attack.execution
    - attack.stealth
    - attack.t1574.001
logsource:
    category: image_load
    product: windows
detection:
    selection:
        ImageLoaded|endswith: '\SolidPDFCreator.dll'
    filter_main_path:
        Image|endswith: '\SolidPDFCreator.exe'
        ImageLoaded|startswith:
            - 'C:\Program Files (x86)\SolidDocuments\SolidPDFCreator\'
            - 'C:\Program Files\SolidDocuments\SolidPDFCreator\'
    condition: selection and not 1 of filter_main_*
falsepositives:
    - Unknown
level: medium

Known false positives

  • Unknown

Detection content is published as a reviewed draft. Tune thresholds and exclusions against your own telemetry before enabling this rule for alerting.