Malicious PDF — malware analysis report

Heuristics 15

• Adobe Reader Launch action command execution critical CVE exact CVE_2010_1240
  PDF uses the Adobe Reader/Acrobat Launch action pattern associated with CVE-2010-1240: cmd.exe is invoked with attacker-controlled parameters, paired with an embedded/exported payload.
• TrueType bitmap font + active content — CVE-2023-26369 related high CVE related PDF_CVE_2023_26369_RELATED
  PDF embeds a TrueType font with bitmap tables (EBDT/sbix/CBDT) alongside exploit delivery indicators — CVE-2023-26369 exploits the sfac_GetSbitBitmap function in Adobe's libCoolType for arbitrary code execution. This CVE was actively exploited in the wild, but this rule does not validate the malformed EBLC/EBDT primitive.
• Launch action critical PDF_LAUNCH
  PDF contains a /Launch action whose target is an executable, URL, or UNC path — can start an external application
• Embedded Windows executable payload in PDF stream critical PDF_EMBEDDED_PE_PAYLOAD
  PDF stream bytes contain an embedded Windows executable with a verified PE header. Exploit chains often hide droppers inside ordinary streams rather than standard /EmbeddedFile attachments.
• /Launch action target: cmd.exe critical PDF_LAUNCH_COMMAND
  PDF /Launch action specifies an executable target with parameters '/Q /C %HOMEDRIVE%&cd %HOMEPATH%&(if exist "Desktop\\Security_Guide.pdf" (cd "Desktop"' — references a known-dangerous executable (cmd, PowerShell, etc.).
• ClamAV: Pdf.Tool.Agent-1388586 critical CLAMAV_DETECTION
  ClamAV detected this file as malware: Pdf.Tool.Agent-1388586
• Clickable PDF combines external action with parser-evasion structure high PDF_ACTION_PARSER_EVASION
  PDF has an external clickable URI together with object graph or xref structures that make parsers disagree, such as divergent duplicate objects, parser divergence, or xref offset mismatch. That combination is stronger than a plain link: the document is both an outward-action carrier and a parser-confusion/evasion sample.
• Visible LOLBin command execution instruction high SE_LOLBIN_RUN_COMMAND
  Document contains instructions or visible command text involving Windows script/execution tools such as PowerShell, mshta, cmd, rundll32, or regsvr32
• Suspicious extracted artifact high EXTRACTED_FILE_STATIC_TRIAGE
  One or more files extracted from inside this sample matched static suspicious-content checks such as script obfuscation, encoded payload blobs, packed data, or execution/download terms.
• JavaScript action low PDF_JAVASCRIPT
  PDF contains a /JavaScript action. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
• Embedded JS stream low PDF_JS
  PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
• Embedded file low PDF_EMBEDDED
  PDF embeds a file attachment — could carry an executable or another weaponised document as a nested payload
• External URI info PDF_URI
  PDF contains an external URL action
• PDF differential parser failed info PDF_DIFFERENTIAL_PARSE_FAILED
  The cross-check parser (pdfminer.six) failed on this file: PDF differential parser exited 1. Static heuristics still ran and any of their findings above are valid; only the differential cross-check signal is missing.
• Embedded URL info EMBEDDED_URL
  One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
  URL https://github.com/PowerShell/JEA

  • http://www.microsoft.com/en-us/security/default.aspx
  • https://technet.microsoft.com/en-us/library/mt130644.aspx
  • http://aka.ms/privsec
  • https://docs.microsoft.com/en-us/windows-server/identity/securing-privileged-access/privileged-access-workstations
  • https://mva.microsoft.com/
  • https://docs.microsoft.com/en-us/windows-server/administration/windows-server-update-services/get-started/windows-server-update-services-wsus
  • http://docs.microsoft.com/en-us/sccm/sum/understand/software-updates-introduction
  • https://docs.microsoft.com/en-us/azure/operations-management-suite/oms-solution-update-management
  • https://www.microsoft.com/en-us/download/details.aspx?id=55319
  • https://blogs.technet.microsoft.com/secguide/
  • http://docs.microsoft.com/en-us/system-center/dpm/dpm-overview
  • http://www.microsoft.com/en-us/download/details.aspx?id=55269
  • http://azure.microsoft.com/en-us/suites/operations-management-suite/
  • http://technet.microsoft.com/en-us/dn785092.aspx
  • http://aka.ms/laps
  • http://aka.ms/JEAdocs
  • http://msdn.microsoft.com/en-us/library/dn896648.aspx
  • http://channel9.msdn.com/Blogs/windowsserver/Just-Enough-and-Just-in-Time-Administration-in-Windows-Server-2016
  • http://www.microsoft.com/en-us/download/details.aspx?id=46899
  • https://www.microsoft.com/en-us/cloud-platform/microsoft-identity-manager
  • http://docs.microsoft.com/en-us/advanced-threat-analytics/
  • http://docs.microsoft.com/en-us/advanced-threat-analytics/understand-explore/ata-threats
  • http://docs.microsoft.com/en-us/windows/access-protection/credential-guard/credential-guard
  • https://docs.microsoft.com/en-us/windows/access-protection/credential-guard/credential-guard
  • http://docs.microsoft.com/en-us/windows/access-protection/remote-credential-guard
  • http://msdn.microsoft.com/en-us/library/windows/desktop/mt637065\(v=vs.85\).aspx
  • http://docs.microsoft.com/en-us/windows-server/security/windows-defender/windows-defender-overview-windows-server
  • http://docs.microsoft.com/en-us/windows/device-security/device-guard/device-guard-deployment-guide
  • http://docs.microsoft.com/en-us/windows/device-security/applocker/applocker-overview
  • http://docs.microsoft.com/en-us/windows-hardware/manufacture/desktop/secure-boot-overview
  • https://www.microsoft.com/en-us/WindowsForBusiness/windows-atp
  • http://docs.microsoft.com/en-us/windows/whats-new/whats-new-windows-10-version-1507-and-1511
  • http://aka.ms/shieldedvms
  • http://docs.microsoft.com/en-us/windows-server/networking/sdn/software-defined-networking
  • http://docs.microsoft.com/en-us/windows-server/networking/sdn/technologies/network-function-virtualization/datacenter-firewall-overview
  • http://docs.microsoft.com/en-us/windows-server/networking/sdn/manage/configure-datacenter-firewall-acls
  • http://docs.microsoft.com/en-us/windows-server/networking/sdn/manage/use-acls-for-traffic-flow
  • https://www.youtube.com/watch?v=366l9ZLRVBw&list=PL8nfc9haGeb4hLnZzWclNNFe-IfLiy57U&index=11
  • https://www.youtube.com/watch?v=xip5Qtk-7d8&index=15&list=PL8nfc9haGeb7C9h0mejs_4-OeNeT-y7Ct&t=13s
  • https://www.youtube.com/watch?v=xnBrbkY9P20&index=6&list=PL8nfc9haGeb7C9h0mejs_4-OeNeT-y7Ct&t=3s
  • https://www.youtube.com/watch?v=eUpKOGSl7yk&index=3&list=PL8nfc9haGeb7C9h0mejs_4-OeNeT-y7Ct
  • https://www.youtube.com/watch?v=F-pTkesjkhI&index=5&list=PL8nfc9haGeb7C9h0mejs_4-OeNeT-y7Ct
  • https://www.youtube.com/watch?v=RAS-TI6PUrg
  • https://www.youtube.com/watch?v=_SaDw1dRy2k&index=7&list=PL8nfc9haGeb7C9h0mejs_4-OeNeT-y7Ct&t=5s
  • http://www.w3.org/1999/02/22-rdf-syntax-ns#
  • http://ns.adobe.com/pdf/1.3/
  • http://purl.org/dc/elements/1.1/
  • http://ns.adobe.com/xap/1.0/
  • http://ns.adobe.com/xap/1.0/mm/

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