Malicious RTF — malware analysis report

Static analysis result for SHA-256 633dc37f01b9159d…

MALICIOUS

RTF

560.0 KB Created: 2019-01-07 23:54:00 First seen: 2026-06-18
MD5: 72ef14230373e7264aaa162b47855ab9 SHA-1: e674590fb292affb155166340ad15aef24809930 SHA-256: 633dc37f01b9159d7bddfc25ca8aa9787f3a235d52ec6f5f4d2d1ae3baa73e14
162 Risk Score

Heuristics 6

  • \objupdate forces OLE activation high RTF_OBJUPDATE
    RTF contains \objupdate — forces automatic OLE object instantiation when the document is opened, bypassing user interaction. Almost exclusively seen in Equation Editor exploit documents.
  • Package object class high RTF_OBJCLASS_PACKAGE
    OLE Package object — can wrap arbitrary files
  • 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.
  • OLE object data medium RTF_OBJDATA
    RTF contains 6 \objdata section(s) — embedded OLE objects
  • Embedded OLE object medium RTF_OBJEMB
    RTF contains \objemb — embedded OLE object
  • 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://schemas.microsoft.com/office/word/2003/wordml In RTF body

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
objdata_00_off00002487.bin rtf-objdata-decoded RTF \objdata at offset 0x2487 52782 bytes
SHA-256: e488f5a316a9f98ad51fc29bda41491b6bf411848aac64039920c02d80ff07c3
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved macro source contains an auto-exec entry point and execution/download terms.
objdata_05_off000849e4.bin rtf-objdata-decoded RTF \objdata at offset 0x849E4 1090 bytes
SHA-256: e1f2c58dc31b3e59112f8bf2adf785030e9c14bab4c334697a359ff8ad9786e7