PDF malware analysis — malicious · 82f76b59cf8f5e2e

MALICIOUS

PDF

34.6 KB Created: 2021-07-05 01:46:56 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)

MD5: 6b88ac1e62c531a1fbcdb9e0723a53fd SHA-1: 6208b16a2fe8f41d85992f6e4aeb4668820df874 SHA-256: 82f76b59cf8f5e2ec26e36d637f89a876e18344329faa94a3127db223446c6a8

82 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The document contains lures for free in-game items and includes multiple URLs pointing to potential downloads. The presence of 'cmd_GM431946152.pdf' and other similar filenames suggests an attempt to disguise malicious executables or scripts as PDF files. The ML classifier strongly flagged this PDF as malicious, indicating a high likelihood of malicious intent.

Machine Learning

Nyx PDF Classifier malicious score 0.9980

Heuristics 4

LOLBin token sequence in document text high SE_LOLBIN_RUN_COMMAND

Extracted document text contains a Windows script/execution tool name (PowerShell, mshta, cmd, rundll32, regsvr32, …) within 220 characters of a dangerous flag, command verb, or URL. This is a visible 'run this' instruction in HTML/PDF/RTF lure bodies, or — in macro-laden Office files — the macro's own string-pool entries appearing adjacent in extracted text.
Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON

Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
External URI info PDF_URI

PDF contains an external URL action
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://netcdn.tw/app/406889139/free-coins-and-spins-for-coin-master-game-hack
- https://abellamoveis.com.br/ckfinder/userfiles/files/free-robux-generator-tool-download_GM431946152.pdf
- https://abellamoveis.com.br/ckfinder/userfiles/files/schoto-roblox-free-shop-hose_GM431946152.pdf
- https://abellamoveis.com.br/ckfinder/userfiles/files/free-robux-cmd_GM431946152.pdf
- https://abellamoveis.com.br/ckfinder/userfiles/files/hack-roblox-players_GM431946152.pdf
- https://abellamoveis.com.br/ckfinder/userfiles/files/hacks-to-get-free-robux_GM431946152.pdf
- https://abellamoveis.com.br/ckfinder/userfiles/files/how-to-get-minecraft-pe-for-free_GM479516143.pdf
- https://abellamoveis.com.br/ckfinder/userfiles/files/how-to-free-robux_GM431946152.pdf
- https://abellamoveis.com.br/ckfinder/userfiles/files/coin-master-free-coins_GM406889139.pdf
- https://abellamoveis.com.br/ckfinder/userfiles/files/roblox-generator-com_GM431946152.pdf
- https://abellamoveis.com.br/ckfinder/userfiles/files/how-to-hack-robux-with-cheat-engine-65_GM431946152.pdf
- https://abellamoveis.com.br/ckfinder/userfiles/files/free-spin-and-coin_GM406889139.pdf
- https://abellamoveis.com.br/ckfinder/userfiles/files/wurst-commands_GM479516143.pdf
- https://abellamoveis.com.br/ckfinder/userfiles/files/coin-master-free-spins-promo-code_GM406889139.pdf
- https://abellamoveis.com.br/ckfinder/userfiles/files/free-roblox-gift-card-codes-2021_GM431946152.pdf
- https://abellamoveis.com.br/ckfinder/userfiles/files/is-minecraft-java-edition-free_GM479516143.pdf
- https://abellamoveis.com.br/ckfinder/userfiles/files/op-rewards-robux_GM431946152.pdf
- https://abellamoveis.com.br/ckfinder/userfiles/files/how-yo-get-more-money-on-roblox-cheat_GM431946152.pdf
- https://abellamoveis.com.br/ckfinder/userfiles/files/coin-master-hack-2021_GM406889139.pdf
- https://abellamoveis.com.br/ckfinder/userfiles/files/roblox-free-accessories_GM431946152.pdf
- https://abellamoveis.com.br/ckfinder/userfiles/files/roblox-sexually_GM431946152.pdf
- https://abellamoveis.com.br/ckfinder/use
- http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off00003247.bin` `deb9b7ebb7790611b76cd9afb027a3b1addfed73abbcf8ff8421feb1e5119a38`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x3247	22380 bytes
`font_01_sfnt_off0000643d.bin` `c90f632020bcb1e728f62a43997badda2860e0d329262e99dedc1f8a12c39115`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x643D	18348 bytes

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