Malicious RTF — malware analysis report

Static analysis result for SHA-256 77d90ed2f1534cd5…

MALICIOUS

RTF

4.69 MB Created: 2017-12-09 01:34:00 First seen: 2021-02-23
MD5: f61802c90e0410e2bfd18be03718c1e0 SHA-1: e9b4ca19f2aae88b65daff19be471f253826bef5 SHA-256: 77d90ed2f1534cd5d3de78afad07cfdd89e73a126c47d42d38559474cb1d3f95
162 Risk Score

Heuristics 6

  • ClamAV: Doc.Exploit.DDEautoexec-6346603-1 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Exploit.DDEautoexec-6346603-1
  • Large hex data blocks in OLE object high RTF_EXCESSIVE_HEX
    RTF contains ~4852KB of hex-encoded data inside \objdata sections — may hide a payload
  • OLE object data medium RTF_OBJDATA
    RTF contains 10 \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.
  • 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 In RTF body

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
objdata_00_off00003585.bin rtf-objdata-decoded RTF \objdata at offset 0x3585 20017 bytes
SHA-256: 4da475db9dfe82ea155fb68c8af1373a4fccdca00b790ea7e4760a3202c2bbc8
objdata_01_off0000f04b.bin rtf-objdata-decoded RTF \objdata at offset 0xF04B 20017 bytes
SHA-256: 5f5435ccd409cd303185fda09715f1af05ce4bcb76ea696c1c42054553ae077d
objdata_02_off0001a98e.bin rtf-objdata-decoded RTF \objdata at offset 0x1A98E 20017 bytes
SHA-256: 81e4859b28a56dbccf6d70eeb952739b7a303272c2546b76aa6f2ac2fd224f04
objdata_05_off0003d55b.bin rtf-objdata-decoded RTF \objdata at offset 0x3D55B 20017 bytes
SHA-256: fb9d89beb6ab34cda686d461a6862c6f998ab3cf9a4da6ffa07c26a01074ee77

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