Malicious RTF — malware analysis report

Static analysis result for SHA-256 0bcea1ae911e615b…

MALICIOUS

RTF

133.0 KB Created: 2019-01-20 14:19:00 First seen: 2026-06-20
MD5: 767a4eac33419e94af6eddfcee755b5d SHA-1: 980d5af47d91a7816c7ce8902b02c85d042507aa SHA-256: 0bcea1ae911e615bdb1909e21fe0047d4df589d313df11a141856796d02316ef
202 Risk Score

Heuristics 6

  • Equation Editor CLSID critical CVE likely RTF_EQUATION_EDITOR
    Equation Editor OLE CLSID found inside an OLE object — exploited by CVE-2017-11882 / CVE-2018-0802 / CVE-2018-0798
  • ClamAV: Rtf.Dropper.Agent-6879021-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Rtf.Dropper.Agent-6879021-0
  • \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.
  • OLE object data medium RTF_OBJDATA
    RTF contains 3 \objdata section(s) — embedded OLE objects
  • Suspicious extracted artifact medium 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.
  • 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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
objdata_00_off000116d5.bin rtf-objdata-decoded RTF \objdata at offset 0x116D5 8592 bytes
SHA-256: 644724bf45a92dd8781e05b84d2e4d1a9770aa9499ba44ebc8a45ae895a92cd3
objdata_01_off00015aa5.bin rtf-objdata-decoded RTF \objdata at offset 0x15AA5 10172 bytes
SHA-256: 41f45b1fa7d21898a44da35c79c689ffa16478b65d170849dc81b530ca5433ea
objdata_02_off0001adbb.bin rtf-objdata-decoded RTF \objdata at offset 0x1ADBB 12923 bytes
SHA-256: b784f9d91a7387edb1b68787536f19bd346d75f0035b0b9c5a612cff4d7aab65
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Static shellcode analysis found candidate code region(s). Indicators: SC_STR_LOADLIBRARY, SC_STR_URLDOWNLOAD, SC_PEB_ACCESS Static shellcode analysis recovered API/import strings: LoadLibraryW, GetProcAddress, URLDownloadToFileW, ExitProcess

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