Malicious RTF — malware analysis report

Static analysis result for SHA-256 12572c2fc2b0298f…

MALICIOUS

RTF

1.08 MB Created: 2016-05-20 18:47:00 First seen: 2020-12-25
MD5: 3f44a0f1d746cb99ab0321e73133ecae SHA-1: 9b276a0f5fd824c3dff638c5c127567c65222230 SHA-256: 12572c2fc2b0298ffd4305ca532317dc8b97ddfd0a05671066fe594997ec38f5
244 Risk Score

Heuristics 7

  • 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.
  • ClamAV: Doc.Exploit.CVE_2015_1641-6397417-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Exploit.CVE_2015_1641-6397417-0
  • Large hex data blocks in OLE object high RTF_EXCESSIVE_HEX
    RTF contains ~1072KB of hex-encoded data inside \objdata sections — may hide a payload
  • 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
  • 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 In RTF body

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
objdata_00_off00002bac.bin rtf-objdata-decoded RTF \objdata at offset 0x2BAC 3760 bytes
SHA-256: ea1cb415a207dc1dfdf1c824d6d48806fb2035488cdfae51cd686cc2d4284772
objdata_01_off00004f90.bin rtf-objdata-decoded RTF \objdata at offset 0x4F90 527921 bytes
SHA-256: 2f617a1c7ecd0ecd3bbec0d9c43ccfaff85a0f2b887ff226e603a94688d2144d
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved artifact entropy is 7.78, consistent with packed or encrypted content.
objdata_02_off00109469.bin rtf-objdata-decoded RTF \objdata at offset 0x109469 11825 bytes
SHA-256: 24c96af5fbda27a76b0d3c6d3ae5326977f6d567056748de21be3327c178f7aa
Detection
ClamAV: Doc.Exploit.CVE_2015_1641-6397417-0
Obfuscation or payload: unlikely