Malicious RTF — malware analysis report

Static analysis result for SHA-256 aa18b8175f68e8ee…

MALICIOUS

RTF

55.3 KB Created: 2017-09-06 15:29:00 First seen: 2017-09-14
MD5: 51e7abcc8046e531da45efb90379eeb0 SHA-1: 19a2daf31cd0417722d01b16b502498d210d6b32 SHA-256: aa18b8175f68e8eefa12cd2033368bc1b73ff7caf05b405f6ff1e09ef812803c
262 Risk Score

Malware Insights

MITRE ATT&CK
T1203 Exploitation for Client Execution T1566.001 Spearphishing Attachment

The RTF file exploits CVE-2017-0199, a known vulnerability in Microsoft Office that allows for remote code execution via OLE object activation. The embedded URL `the embedded link is used to download a secondary payload. The document body content appears to be unrelated news excerpts, likely used as a lure.

Heuristics 7

  • 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-2017-0199 (OLE2Link / remote URL Moniker) critical CVE likely CVE_2017_0199
    RTF contains a URL Moniker OLE link whose decoded target is remote. Office can fetch and process the response through the CVE-2017-0199 OLE2Link attack path, but the server-side content type is not proven statically.
  • ClamAV: Rtf.Exploit.CVE_2017_0199-6335035-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Rtf.Exploit.CVE_2017_0199-6335035-0
  • \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 1 \objdata section(s) — embedded OLE objects
  • 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.
  • 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://www.storgemydata.website/update-online/office-update.rtf In RTF body
    • http://www.storgemydata.website/update-online/office-update.rtIn RTF body
    • https://arabic.rt.com/middle_east/895979-%D8%B9%D8%A8%D8%A7%D8%B3-%D8%A3%D8%B1%D8%AF%D9%88%D8%BA%D8%A7%D9%86-%D8%AA%D8%AF%D8%AE%D9%84-%D8%A7%D9%86%D9%82%D8%B3%D8%A7%D9%85/In RTF body
    • http://schemas.microsoft.com/office/word/2003/wordmlIn RTF body
    • https://arabic.rt.com/tags/abas/In RTF body

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
objdata_00_off00002c39.bin rtf-objdata-decoded RTF \objdata at offset 0x2C39 5040 bytes
SHA-256: 37b921a27b8b0cdc598e614b1a02fd8c711ed4c3add79b717d179582bb3197f0

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