RTF malware analysis — malicious · d5fefea8edb768f5

MALICIOUS

RTF

302.3 KB

MD5: 8b6661c5451ab98f0dfdc836b04f39f7 SHA-1: 7033f047f6a34de7033ca500d612228da5acf965 SHA-256: d5fefea8edb768f5a72cbe2e312098cc2d3ef3894e8c7ba8acab776093e6d9fe

160 Risk Score

Malware Insights

MITRE ATT&CK

T1204 Malicious Link T1204.002 Malicious Link: Malicious File

The RTF file contains multiple OLE object data sections and triggers heuristics related to OLE object activation and composite monikers, indicating the embedding of potentially malicious OLE objects. The document body explicitly instructs the user to 'download the document and click Enable Editing', a typical social engineering tactic to bypass macro security settings and execute embedded malicious content. No scripts were extracted from this sample.

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.

Filename	Kind	Source	Size
`objdata_00_off000008fd.bin` `926ee154fa6ec7e04ab3b0f442ef67d83056a1603867b8f1fb29bfae39ec12af`	rtf-objdata-decoded	RTF \objdata at offset 0x8FD	58997 bytes
`objdata_01_off0001d6ec.bin` `12289ea42203fe86d5d6e86e52672f752ead5709842d0443203b40a4917d5ece`	rtf-objdata-decoded	RTF \objdata at offset 0x1D6EC	12261 bytes
`objdata_02_off000236fe.bin` `5de732ece55617b212baa0db7102c497ed7e809d372953a6a31ff14adb5754f5`	rtf-objdata-decoded	RTF \objdata at offset 0x236FE	2632 bytes

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