Malicious RTF — malware analysis report

Static analysis result for SHA-256 a82d467633bcf42c…

MALICIOUS

RTF

44.7 KB Created: 2017-10-10 07:23:00 First seen: 2017-10-28
MD5: 7f3b77995d00f6667f543024bdd5559a SHA-1: 643eb07caf1746582a76447984240c4bafbb4a80 SHA-256: a82d467633bcf42c262b845af7147c5df2ebffa9ee3bad700e6778fc43dfb309
142 Risk Score

Malware Insights

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

The RTF file contains an OLE object that exploits CVE-2017-0199, a known vulnerability for remote URL monikers. This exploit is designed to download and execute a secondary payload from the URL http://chilibi.com/new_img/t.php?thread=0&t=h. The presence of an embedded OLE object and the exploitation of a known vulnerability strongly indicate a malicious document intended to deliver further malware.

Heuristics 5

  • 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.
  • Automatically linked OLE object high RTF_OBJAUTLINK
    RTF contains \objautlink — an automatically linked OLE object surface that can be updated or activated when Word opens the document.
  • 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://chilibi.com/new_img/t.php?stats=send&thread=0 In RTF body
    • http://chilibi.com/new_img/t.php?thread=0&t=hIn RTF body
    • http://schemas.microsoft.com/office/word/2003/wordmlIn RTF body

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
objdata_00_off00002a51.bin rtf-objdata-decoded RTF \objdata at offset 0x2A51 4274 bytes
SHA-256: 00daad17499fc645447079f9d05b778f9bd577b593c1fe6598cb7ef628768407

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