RTF malware analysis — malicious · 4ae25f3a60af8e7a

MALICIOUS

RTF

213.2 KB First seen: 2019-09-30

MD5: 853da7e129a53c12afdefa5641e86eb4 SHA-1: 57dcd0efe86a1f3d2eea923577810970d97b8577 SHA-256: 4ae25f3a60af8e7a8d0c889f769614ca9b36fd1f2c7a451fc667b9a07061b5d3

262 Risk Score

Malware Insights

MITRE ATT&CK

T1203 Exploitation for Client Execution T1566.001 Spearphishing Attachment

The RTF document contains OLE object data and triggers CVE-2017-8570, indicating it's designed to execute arbitrary code. The embedded OLE object likely contains a script or executable, as suggested by the 'objdata_00_off0000559c.bin' artifact. The document also contains a lure to enable macros or editing, a common tactic for malware droppers. The extracted URL likely hosts the second-stage payload.

Heuristics 9

Composite Moniker — CVE-2017-8570 (drops SCT script) critical CVE related CVE_2017_8570

RTF \objdata decodes to OLE data containing the Composite Moniker — CVE-2017-8570 (drops SCT script) CLSID — the vulnerable control/moniker is embedded directly in the document's object stream, the delivery shape of this exploit. RTF objects auto-render when Word opens the file.
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.
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 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
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 httPs://equipreduce.com/menu/notepads.exe In RTF body

Extracted artifacts 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`objdata_00_off0000559c.bin`	rtf-objdata-decoded	RTF \objdata at offset 0x559C	3505 bytes
SHA-256: `6953a75530abb9cc09224d2972cac0f927627ad5cb66bdac9eddb898095590d7`
Detection ClamAV: No threats found Obfuscation or payload: likely Static shellcode analysis recovered command string(s): WScript.Sh"
`objdata_01_off00007203.bin`	rtf-objdata-decoded	RTF \objdata at offset 0x7203	12261 bytes
SHA-256: `c2e145786c38ff9a9613cb6195c0ab2d111b825bcc544af402b58d34f065621c`
`objdata_02_off0000d215.bin`	rtf-objdata-decoded	RTF \objdata at offset 0xD215	2632 bytes
SHA-256: `5bf8b3f15a4ef80f9ddcce100db380267632561c75ba9f09b62cee5acaed3294`

Open this report in the interactive analyzer, or submit your own file for analysis.