RTF malware analysis — malicious · be9a63b10fd3e378

MALICIOUS

RTF

134.4 KB First seen: 2019-04-18

MD5: 8029cd3dc595bfb06029ac93b0674d47 SHA-1: 57849174ea900ce8cfa9ba242b74c22b09b37906 SHA-256: be9a63b10fd3e3782e83d1ad0357807bcbf742715c0b7d52115139546a5fef6f

62 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The RTF document contains OLE object data and an \objupdate directive, indicating it is designed to exploit a vulnerability and execute embedded content. While no specific script was extracted, the presence of OLE objects and the RTF format strongly suggests an attempt to execute arbitrary code, likely for downloading and running a secondary payload. The benign URL is likely a decoy or misdirection.

Heuristics 3

\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
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 1

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`objdata_00_off00020451.bin`	rtf-objdata-decoded	RTF \objdata at offset 0x20451	1680 bytes
SHA-256: `681df79f390ffa920310237fc324ed834dd8cc87df5faf103677099c6e8bf0a2`

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