RTF malware analysis — malicious · 4ac1e100cf5d46dc

MALICIOUS

RTF

191.0 KB Created: 2020-03-06 09:04:00 First seen: 2020-05-14

MD5: c9d97c97056c08f69136a802be79d6f9 SHA-1: 1e3e8b89ce709b908c580d6bca5d08d72f6a0a86 SHA-256: 4ac1e100cf5d46dca4cca9e051d744ff1406630904f836d95ee3c172a9d2aca5

84 Risk Score

Heuristics 5

\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 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.

Filename	Kind	Source	Size
`objdata_00_off00007ae8.bin`	rtf-objdata-decoded	RTF \objdata at offset 0x7AE8	74992 bytes
SHA-256: `cf291c4d567059152bcfa1c2a5ff9fa6ad5fb2ce4e96cd26e12130006ed99b3f`
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact entropy is 8.00, consistent with packed or encrypted content.
`objdata_01_off0002c4ee.bin`	rtf-objdata-decoded	RTF \objdata at offset 0x2C4EE	6847 bytes
SHA-256: `e41db3b920b97d35fee7cad90d8e442e95f33a22b8414d5819876e58889c49d7`
`objdata_02_off0002c508.bin`	rtf-objdata-decoded	RTF \objdata at offset 0x2C508	6843 bytes
SHA-256: `cbf708629437999ba26cf021c20424245fb880bd6c399adc3aa83dd2b149b130`

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