PDF malware analysis — malicious · 0fcd996e0d0ae341

MALICIOUS

PDF

35.4 KB Created: 2021-07-05 08:12:49 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01

MD5: 8afce8e2ed0ae7ecc385098213f35a43 SHA-1: cdbadce342c579de81f3dbb0820ef1a58c42e525 SHA-256: 0fcd996e0d0ae341e52f2112d359fa7835ab4ea718b6378c4959b66a84b5bc33

82 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. The file routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

Nyx PDF Classifier malicious score 0.9980

Heuristics 4

PDF links to a 'free generator / game hack' redirector high PDF_GAME_HACK_REDIRECT_LURE

PDF's clickable action targets a redirector of the form /app/<id>/<slug>-game-hack — the landing-page shape of a large SEO 'free spins / generator / game hack' lure family that funnels victims through rotating disposable hosts to a malware/scam payload. The multi-link variants also trip ML/link-farm rules; this catches the single-link variants that otherwise score clean.
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/431946152/free-robux-generator-no-human-verification-game-hack PDF link annotation
- http://cartoriogoianira.com.br/ckfinder/userfiles/files/how-to-get-all-three-free-rtho-roblox-bundles-nike_GM431946152.pdfIn PDF document text
- http://cartoriogoianira.com.br/ckfinder/userfiles/files/inappropriate-roblox-games_GM431946152.pdfIn PDF document text
- http://cartoriogoianira.com.br/ckfinder/userfiles/files/i-am-now-crying-because-i-got-hacked-roblox_GM431946152.pdfIn PDF document text
- http://cartoriogoianira.com.br/ckfinder/userfiles/files/www-roblox-cheatus-limited-amount-2021_GM431946152.pdfIn PDF document text
- http://cartoriogoianira.com.br/ckfinder/userfiles/files/how-to-become-a-hacker-in-roblox_GM431946152.pdfIn PDF document text
- http://cartoriogoianira.com.br/ckfinder/userfiles/files/free-online-minecraft-server_GM479516143.pdfIn PDF document text
- http://cartoriogoianira.com.br/ckfinder/userfiles/files/robux-free-online_GM431946152.pdfIn PDF document text
- http://cartoriogoianira.com.br/ckfinder/userfiles/files/free-spins-and-coins-coin-master-facebook_GM406889139.pdfIn PDF document text
- http://cartoriogoianira.com.br/ckfinder/userfiles/files/roblox-the-conquerors-3-hack-2021_GM431946152.pdfIn PDF document text
- http://cartoriogoianira.com.br/ckfinder/userfiles/files/op-rewards-free-robux_GM431946152.pdfIn PDF document text
- http://cartoriogoianira.com.br/ckfinder/userfiles/files/robux-scam_GM431946152.pdfIn PDF document text
- http://cartoriogoianira.com.br/ckfinder/userfiles/files/hack-coin-master-2021_GM406889139.pdfIn PDF document text
- http://cartoriogoianira.com.br/ckfinder/userfiles/files/robux-game_GM431946152.pdfIn PDF document text
- http://cartoriogoianira.com.br/ckfinder/userfiles/files/free-spin-sites-for-coin-master_GM406889139.pdfIn PDF document text
- http://cartoriogoianira.com.br/ckfinder/userfiles/files/roblox-game-download-hacks-studio-login-guide-unofficial_GM431946152.pdfIn PDF document text
- http://cartoriogoianira.com.br/ckfinder/userfiles/files/anti-cheat-bypass-roblox_GM431946152.pdfIn PDF document text
- http://cartoriogoianira.com.br/ckfinder/userfiles/files/how-to-get-free-bc-on-roblox_GM431946152.pdfIn PDF document text
- http://cartoriogoianira.com.br/ckfinder/userfiles/files/free-multiplayer-minecraft-server_GM479516143.pdfIn PDF document text
- http://cartoriogoianira.com.br/ckfinder/userfiles/files/how-to-get-free-robux-on-phone-no-human-verification_GM431946152.pdfIn PDF document text
- http://cartoriogoianira.com.br/ckfinder/userfiles/files/coin-master-gift-link_GM406889139.pdfIn PDF document text
- http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off0000318e.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x318E	22724 bytes
SHA-256: `7d5422b71a6bcecf74ffd12773c0a3960f6f848a62e47dc4b0b7831bb9eab3ca`
`font_01_sfnt_off000064c3.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x64C3	19336 bytes
SHA-256: `1e7a5ee1c2d4ea33325644fd63b1f7e257f54daacec13fb4b037f0c912b7aa4c`

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