Malicious PDF — malware analysis report

Static analysis result for SHA-256 d10517750f23cdc0…

MALICIOUS

PDF

1.91 MB Authoring application: Oracle XML Publisher 5.6.3
MD5: 7a74408679925ec82504efadf0cb1ac4 SHA-1: 9517cf77ddaede0348014140aeff5edc3df2dc7e SHA-256: d10517750f23cdc0ea20d5f80d9d9776f87596783a66c7fab9b3fe1ff68a4fc9
128 Risk Score

Malware Insights

MITRE ATT&CK
T1553.005 Mark-of-the-Web Bypass T1204.002 Malicious File

The PDF contains an embedded executable payload, indicated by the 'PDF_EMBEDDED_PE_PAYLOAD' heuristic. The 'SE_INVOICE_LURE' heuristic suggests the document's content is designed to trick the user into executing the payload. The embedded executable was detected by ClamAV as 'Win.Trojan.LuminosityLink-9636903-0'. The primary IOC is the embedded executable file itself.

Heuristics 4

  • 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.
  • ClamAV detection on extracted artifact critical EXTRACTED_FILE_CLAMAV
    ClamAV flagged at least one file extracted from inside this sample. Even when the wrapping document carries no AV detection of its own, a hit on the carved artifact is a strong indicator the sample is a delivery vehicle.
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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://www.w3.org/2001/XMLSchema-instance

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
embedded_pdf_000036b2.exe
e232a701a26a2b66d4f657010be5c2be43b9902147461e989ff464111553cb0d		 embedded-pe PDF decompressed stream PE payload at offset 0x36B2 1983958 bytes
Detection
ClamAV: Win.Trojan.LuminosityLink-9636903-0
Obfuscation or payload: unlikely

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