RTF malware analysis — malicious · b47fe5a720b11a46

MALICIOUS

RTF

1.63 MB Created: 2018-01-15 01:22:00 First seen: 2021-02-23

MD5: d4d3ecbc804b011f776beb5d3a348c97 SHA-1: afe0fafefdc063676673153fdd7dc5508c196573 SHA-256: b47fe5a720b11a464e9780de01728fa14dcb0f9ea306fb908f9b80b1e27763af

242 Risk Score

Heuristics 6

ClamAV: Doc.Macro.Obfuscation-6391394-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Doc.Macro.Obfuscation-6391394-0
\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.
Large hex data blocks in OLE object high RTF_EXCESSIVE_HEX

RTF contains ~1643KB 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
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 10

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`objdata_00_off000035fc.bin`	rtf-objdata-decoded	RTF \objdata at offset 0x35FC	22593 bytes
SHA-256: `13fb018941c87ae411f812d8a93a02d93fbcfc90124dc95132f24e2662f983fd`
Detection ClamAV: Doc.Macro.Obfuscation-6391394-0 Obfuscation or payload: unlikely
`objdata_01_off00014047.bin`	rtf-objdata-decoded	RTF \objdata at offset 0x14047	22593 bytes
SHA-256: `2490bd5fd143545533e2e35a6dbeee73a037195e829ba7eaccd663a493f73efc`
Detection ClamAV: Doc.Macro.Obfuscation-6391394-0 Obfuscation or payload: unlikely
`objdata_02_off00024a92.bin`	rtf-objdata-decoded	RTF \objdata at offset 0x24A92	22593 bytes
SHA-256: `c44cfda27fd624debf4cb93607290d204c3a13458e4e7e5e22b98b06cd0ca7eb`
Detection ClamAV: Doc.Macro.Obfuscation-6391394-0 Obfuscation or payload: unlikely
`objdata_03_off000354dd.bin`	rtf-objdata-decoded	RTF \objdata at offset 0x354DD	22593 bytes
SHA-256: `93fcd77b2bbd618d116087573eef7f74d1167132afc56a3f5b17fd92bd7eee7f`
Detection ClamAV: Doc.Macro.Obfuscation-6391394-0 Obfuscation or payload: unlikely
`objdata_04_off00045f28.bin`	rtf-objdata-decoded	RTF \objdata at offset 0x45F28	22593 bytes
SHA-256: `2a5744fcce3476b15c4b2a2f703ac47cd2b5ca29f2b914aa57c6db99b58f588a`
Detection ClamAV: Doc.Macro.Obfuscation-6391394-0 Obfuscation or payload: unlikely
`objdata_05_off00056973.bin`	rtf-objdata-decoded	RTF \objdata at offset 0x56973	22593 bytes
SHA-256: `d2ad53e6d43088147719a0cbf9eec395e0809e207f5e08ad58a7724c846a967c`
Detection ClamAV: Doc.Macro.Obfuscation-6391394-0 Obfuscation or payload: unlikely
`objdata_06_off000673be.bin`	rtf-objdata-decoded	RTF \objdata at offset 0x673BE	22593 bytes
SHA-256: `5947a0c20831364cb0b0f8bc63e3c3665d7553303022864aa32a87b2cf1dd67a`
Detection ClamAV: Doc.Macro.Obfuscation-6391394-0 Obfuscation or payload: unlikely
`objdata_07_off00077e09.bin`	rtf-objdata-decoded	RTF \objdata at offset 0x77E09	22593 bytes
SHA-256: `bfc0a33a330764715fe7c105486531a05d02c03bce022cee685d7e51dbf4fda5`
Detection ClamAV: Doc.Macro.Obfuscation-6391394-0 Obfuscation or payload: unlikely
`objdata_08_off00088854.bin`	rtf-objdata-decoded	RTF \objdata at offset 0x88854	22593 bytes
SHA-256: `d8011e7dabeaa5eb998264bf31e1152c56eeb3d862e3a663a3be4fd15f986489`
Detection ClamAV: Doc.Macro.Obfuscation-6391394-0 Obfuscation or payload: unlikely
`objdata_09_off0009929f.bin`	rtf-objdata-decoded	RTF \objdata at offset 0x9929F	22593 bytes
SHA-256: `148d08cef213b9eb164aec59562e6d86b4e7bf0f1e78cd931b76a7540b24e6d2`
Detection ClamAV: Doc.Macro.Obfuscation-6391394-0 Obfuscation or payload: unlikely

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