Malicious RTF / .DOC — malware analysis report

Static analysis result for SHA-256 5cd3011673fe7224…

MALICIOUS

RTF / .DOC

76.1 KB Authoring application: Msftedit 5.41.15.1515
MD5: 4954e8c62282ff002ab89ee44ad755c3 SHA-1: f8999b7341f8eb4d6a9b85626e18f70ea5c409d4 SHA-256: 5cd3011673fe72244072ca5557fac49628650c5d8fa4b13e6727ffbd7844fdec
142 Risk Score

Malware Insights

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

The RTF document contains an embedded OLE object, identified as a package object, which in turn contains a PE header in hex data. This strongly suggests the RTF is a container for a malicious executable. The embedded artifact 'objdata_00_off000000cf.bin' is the likely payload. The file is classified as malicious with a high risk score.

Heuristics 5

  • PE header (with DOS stub) in hex data critical RTF_MZ_HEX
    Hex-encoded PE (MZ + DOS stub) found inside RTF — likely an embedded executable payload
  • Package object class high RTF_OBJCLASS_PACKAGE
    OLE Package object — can wrap arbitrary files
  • 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.

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
objdata_00_off000000cf.bin
fc1d3ed625d917e193f2b693823d1312810bfce9fa1ea3f25ee91324441c69ca
rtf-objdata-decoded RTF \objdata at offset 0xCF 34103 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved artifact entropy is 7.41, consistent with packed or encrypted content.