PDF malware analysis — malicious · 35b7b75ab715e111

MALICIOUS

PDF

45.1 KB Created: 2021-05-14 02:13:54 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)

MD5: 08f0cd042b9867a0c37db55273b5bfc3 SHA-1: 2a3c3e18cbc492d035dcdcfb59d8ddab621c12d5 SHA-256: 35b7b75ab715e111c396edac58b444f8d3c839b6fe6c5302d74fa2ee22aeffc1

82 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The document presents itself as a "Coin Master Game Hack" and displays a fake CAPTCHA to trick the user into interacting with a malicious link. The embedded URL and numerous other related URLs suggest a phishing or scam campaign aimed at users seeking game cheats or in-game currency. No scripts were extracted, but the presence of a fake CAPTCHA and external links strongly indicates a malicious intent to redirect users to potentially harmful content.

Machine Learning

Nyx PDF Classifier malicious score 0.9621

Heuristics 4

Fake CAPTCHA / human verification prompt high SE_FAKE_CAPTCHA

Document displays a fake CAPTCHA or human-verification prompt — used to trick users into running commands or pressing keyboard shortcuts
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 https://netcdn.xyz/app/406889139/coin-master-game-hack-link-game-hack
- http://adravietnam.org/images/coin-master-free-spins-link-october-2021_GM406889139.pdf
- http://adravietnam.org/images/coin-master-free-spins-hack_GM406889139.pdf
- http://www.adravietnam.org/images/coin-master-hack-no-verification-no-signup_GM406889139.pdf
- http://adravietnam.org/images/coin-master-free-spins-save_GM406889139.pdf
- http://www.adravietnam.org/images/free-robux-no-scam_GM431946152.pdf
- http://www.adravietnam.org/images/get-free-cards-coin-master_GM406889139.pdf
- http://adravietnam.org/images/sites-to-get-free-robux_GM431946152.pdf
- http://adravietnam.org/images/robuxmatch-com-free-robux_GM431946152.pdf
- http://www.adravietnam.org/images/best-free-spin-app-for-coin-master_GM406889139.pdf
- http://www.adravietnam.org/images/how-to-get-free-roebucks-in-roblox_GM431946152.pdf
- http://www.adravietnam.org/images/roblox-free-models_GM431946152.pdf
- http://adravietnam.org/images/coin-master-hack-spins-download_GM406889139.pdf
- http://www.adravietnam.org/images/how-do-you-hack-minecraft_GM479516143.pdf
- http://www.adravietnam.org/images/free-robux-download_GM431946152.pdf
- http://adravietnam.org/images/free-robux-survey_GM431946152.pdf
- http://adravietnam.org/images/coin-master-free-spin-today_GM406889139.pdf
- http://adravietnam.org/images/how-to-win-free-robux_GM431946152.pdf
- http://www.adravietnam.org/images/roblox-free-rubox_GM431946152.pdf
- http://www.adravietnam.org/images/coin-master-connection-lost-hack_GM406889139.pdf
- http://www.adravietnam.org/images/coinmasterfreespins_GM406889139.pdf
- https://coinmasterspinandcoin.com
- http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`stream_003_off00004b9c.bin` `e1a8b4a4bc2b79647c594e94d9ae6fd1e7993a6d5a2205380049c557c2239f82`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x4B9C	25272 bytes
`font_01_sfnt_off000084e5.bin` `10d025f04f706eb71cdda4f99784df1b9ccb52e48080e43095e0398eaef6f132`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x84E5	2880 bytes
`font_02_sfnt_off00008ed0.bin` `4c1d26c1fb4feed8092d99a8761960172faa49b0c213e7324f16c91828cd6f14`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8ED0	17976 bytes

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