Malicious PDF — malware analysis report

Static analysis result for SHA-256 07e95855107eb8d0…

MALICIOUS

PDF

31.1 KB
MD5: 3d4c7aa444cef7ea72f53cfb11bb49be SHA-1: ec65c0a5e902c9d2ba71148c221977634f7ba924 SHA-256: 07e95855107eb8d04e484a8de3983dc7d687cc5b4ee0aba766a148644b39ccbc
142 Risk Score

Malware Insights

MITRE ATT&CK
T1059.003 Windows Command Shell T1204.002 Malicious File

The PDF contains a launch action that executes cmd.exe with a complex command string. This command string appears to search for specific strings within PDF files, process them using 'debug', rename the output to an executable, and then start it. This indicates an attempt to download and execute a secondary payload.

Machine Learning

  • Nyx PDF Classifier clean score 0.1800

Heuristics 4

  • Launch action critical PDF_LAUNCH
    PDF contains a /Launch action whose target is an executable, URL, or UNC path — can start an external application
  • /Launch action target: c:\\windows\\system32\\cmd.exe critical PDF_LAUNCH_COMMAND
    PDF /Launch action specifies an executable target with parameters '/C findstr deinckqmjp *.pdf > sfntc.src && debug < sfntc.src > out.txt && rename ouite.txt ouite.exe && start ouite.exe' — references a known-dangerous executable (cmd, PowerShell, etc.).
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
  • 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 http://pacer.psc.uscourts.gov
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/xap/1.0/mm/