RTF malware analysis — malicious · 4488d94ebdfa6e3c

MALICIOUS

RTF

278.2 KB

MD5: 0ec0995edc4e6ad213a6fb713fa01417 SHA-1: c4a8a0c3027b74ccd06a0d170d7bf9bef1f309d5 SHA-256: 4488d94ebdfa6e3c691e205c43e15009ffa55b5d14016080d3c80ac0ff447a0f

180 Risk Score

Malware Insights

MITRE ATT&CK

T1204 User Execution T1204.002 Malicious File

The RTF document contains multiple embedded OLE objects, with heuristics indicating that \objupdate forces OLE activation. The document body explicitly instructs the user to 'Enable Editing', a common lure to bypass macro security. This suggests the embedded OLE objects are designed to execute malicious code upon user interaction, likely leading to a second-stage payload. No scripts were extracted from this sample.

Heuristics 7

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
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.

Extracted artifacts 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`objdata_00_off00000b44.bin` `038d4cbd2ee4ad8c31d147d60cca79adc2240610fd69544032babcf9d82ed768`	rtf-objdata-decoded	RTF \objdata at offset 0xB44	46331 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 2 shell/COM execution token(s).
`objdata_01_off0001763f.bin` `12289ea42203fe86d5d6e86e52672f752ead5709842d0443203b40a4917d5ece`	rtf-objdata-decoded	RTF \objdata at offset 0x1763F	12261 bytes
`objdata_02_off0001d651.bin` `5de732ece55617b212baa0db7102c497ed7e809d372953a6a31ff14adb5754f5`	rtf-objdata-decoded	RTF \objdata at offset 0x1D651	2632 bytes

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