Execution of File Written or Modified by PDF Readeredit

Identifies a suspicious file that was written by a PDF reader application and subsequently executed. These processes are often launched via exploitation of PDF applications.

Rule type: eql

Rule indices:

  • logs-endpoint.events.*
  • winlogbeat-*
  • logs-windows.*

Severity: high

Risk score: 21

Runs every: 60m

Searches indices from: now-120m (Date Math format, see also Additional look-back time)

Maximum alerts per execution: 100

References: None


  • Elastic
  • Host
  • Windows
  • Threat Detection
  • Execution

Version: 4

Rule authors:

  • Elastic

Rule license: Elastic License v2

Rule queryedit

sequence with maxspan=2h
  [file where event.type != "deletion" and file.extension : "exe" and
     (process.name : "AcroRd32.exe" or
      process.name : "rdrcef.exe" or
      process.name : "FoxitPhantomPDF.exe" or
      process.name : "FoxitReader.exe") and
     not (file.name : "FoxitPhantomPDF.exe" or
          file.name : "FoxitPhantomPDFUpdater.exe" or
          file.name : "FoxitReader.exe" or
          file.name : "FoxitReaderUpdater.exe" or
          file.name : "AcroRd32.exe" or
          file.name : "rdrcef.exe")
  ] by host.id, file.path
  [process where event.type in ("start", "process_started")] by host.id, process.executable