RTF malware analysis — malicious · 0c7d59587324bbba

MALICIOUS

RTF

267.7 KB Created: 2022-09-13 13:08:00 First seen: 2022-09-19

MD5: e6a4a9bf8e6ecabe9d214430dffede15 SHA-1: cb5a962350b7e3b0d80dc15d5a5535e345c7a28f SHA-256: 0c7d59587324bbba48103c0310fdaf4ca316f2c4648fa79d7c938e37513d5f3e

144 Risk Score

Malware Insights

MITRE ATT&CK

T1204 Malicious Link T1204.002 Malicious Link: Malicious File T1566 Phishing T1566.001 Phishing: Spearphishing Attachment T1059 Command and Scripting Interpreter

The RTF file contains embedded OLE objects and exploits known vulnerabilities, specifically CVE-2017-8759 and CVE-2026-21514. These vulnerabilities allow for the activation of OLE objects and security bypasses, indicating the file's intent is to execute arbitrary code upon opening. The presence of these exploits strongly suggests a malicious payload delivery mechanism.

Heuristics 6

CVE-2017-8759 — MSXML SAX OLE activation critical CVE likely CVE_2017_8759

RTF contains a hex-encoded OLE1 object for Msxml2.SAXXMLReader.6.0 followed by an embedded OLE compound document, and the document requests OLE activation. This matches the RTF staging shape used for CVE-2017-8759 SOAP/WSDL parser code injection.
CVE-2026-21514 — Word/OLE security bypass in RTF high CVE likely CVE_2026_21514

RTF contains a hidden \svb hex package with DrsE2oDoc and downRevStg drawing compatibility parts. This matches an observed CVE-2026-21514 exploitation shape that manipulates Word's internal document structure and trust decisions.
OLE object data medium RTF_OBJDATA

RTF contains 1 \objdata section(s) — embedded OLE objects
Embedded OLE object medium RTF_OBJEMB

RTF contains \objemb — embedded OLE object
Suspicious extracted artifact info 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

Extracted artifacts 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`objdata_00_off0000492d.bin` `81e46d6e855c77e3d73f4cc2146da0412f5a724258b20814e063c0f69153e7dd`	rtf-objdata-decoded	RTF \objdata at offset 0x492D	102449 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact entropy is 7.87, consistent with packed or encrypted content.
`rtf_svb_0000379b.zip` `1eb0c6200a4ff2eefeaeddff7c08e9094c9069aa83bd5c76ecdf6619c5004de5`	rtf-svb-package	RTF \svb hex-decoded ZIP at offset 0x379B	1786 bytes

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