Malicious PDF — malware analysis report

Static analysis result for SHA-256 5e413b45420fe16a…

MALICIOUS

PDF

69.4 KB First seen: 2026-06-11
MD5: aff3761bfd4d0c91e92f89cda169aedd SHA-1: 8a6cc9d6f3bf8cee6e6c313628b6df5464f455ac SHA-256: 5e413b45420fe16afa48c98d29ecf23f8dccf951e2bbf919e2f3b530518eb24a
130 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9959

Heuristics 2

  • Base64-encoded Windows executable payload in PDF critical PDF_BASE64_PE_PAYLOAD
    PDF text contains a long base64 blob that decodes to a verified Windows PE executable. This catches payloads hidden after EOF, inside comments, or in plain text outside normal PDF streams.
  • 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.

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
base64_pdf_pe_00000284.exe embedded-pe PDF raw base64 PE payload at offset 0x284 52736 bytes
SHA-256: 05ef31a2125d52fbc1481a960041f32a4a679877199da64847b9661245ab7ddd
Detection
ClamAV: No threats found
Obfuscation or payload: likely
actual_type=PE; declared_or_context_type=PDF; filename=base64_pdf_pe_00000284.exe; kind=embedded-pe Static shellcode analysis found candidate code region(s). Indicators: SC_PUSH_STRING, SC_STR_VIRTUALALLOC, SC_STR_POWERSHELL Static shellcode analysis recovered API/import strings: VirtualAlloc, VirtualAllocEx, WriteProcessMemory, CreateRemoteThread, OpenProcess Static shellcode analysis recovered command string(s): PowerShell