Malicious RTF / .OLE — malware analysis report

Static analysis result for SHA-256 7efe4ff4cba2c9ae…

MALICIOUS

RTF / .OLE

304.7 KB
MD5: 97c48f29e01c5f06b4e218ba012cdee3 SHA-1: ea34458a09c24b2ca4a201b32408e935d570a228 SHA-256: 7efe4ff4cba2c9ae9f347fac667a576bd4bc73fa42a31e58a0452790275034f0
160 Risk Score

Malware Insights

MITRE ATT&CK
T1204 Malicious Link T1204.002 Malicious Link: Malicious File

The RTF document contains multiple embedded OLE objects, with one specifically triggering an update that forces activation. The document body contains a clear 'Enable Editing' lure, indicating the intent is to trick the user into interacting with the embedded content. This is a common delivery mechanism for malware droppers, though no specific family could be identified from the provided evidence.

Heuristics 6

  • Composite Moniker in RTF OLE object high CVE related RTF_COMPOSITE_MONIKER_RELATED
    RTF contains Composite Moniker CLSID in OLE object context, but no nearby scriptlet/SCT payload was confirmed. Treat as related moniker attack-surface evidence rather than proof of CVE-2017-8570 exploitation.
  • \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
  • Embedded OLE object medium RTF_OBJEMB
    RTF contains \objemb — embedded OLE object
  • OlePres presentation stream in RTF OLE object medium RTF_OLEPRES_STREAM
    RTF contains an embedded OLE object with an OlePres presentation stream. OlePres is an OLE presentation marker and is not enough on its own to identify CVE-2025-21298.
  • Macro/content-enable lure medium SE_ENABLE_LURE
    Document instructs the user to enable macros or editing — a common technique used by malware droppers to bypass Office macro security settings

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
objdata_00_off00000b44.bin
71f7112cca01d94f0092529943ab0878767e73804d3f497911934caeddbfdc8a		 rtf-objdata-decoded RTF \objdata at offset 0xB44 59925 bytes
objdata_01_off0001e073.bin
12289ea42203fe86d5d6e86e52672f752ead5709842d0443203b40a4917d5ece		 rtf-objdata-decoded RTF \objdata at offset 0x1E073 12261 bytes
objdata_02_off00024085.bin
5de732ece55617b212baa0db7102c497ed7e809d372953a6a31ff14adb5754f5		 rtf-objdata-decoded RTF \objdata at offset 0x24085 2632 bytes

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