PDF malware analysis — malicious · c34758e7fd6970f9

MALICIOUS

PDF

46.6 KB Created: 2021-05-11 06:37:04 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)

MD5: c4de1d82a81266d8b79858198509751d SHA-1: 6b01a86617cf3a4201fef8e53057ed7693ab1b56 SHA-256: c34758e7fd6970f950c736042a4db5ac5c66f4c71f55f9696cbfeab26629de92

82 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF document contains a fake CAPTCHA lure, designed to trick users into interacting with malicious links. The embedded URL and numerous other URLs point to sites offering 'Coin Master' or 'Robux' cheats, suggesting a scam or phishing attempt. The ML classifier also flagged this PDF as malicious, reinforcing the suspicious nature of the content.

Machine Learning

Nyx PDF Classifier malicious score 0.8948

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-free-spins-link-today-new-game-hack
- https://www.mjcorporatemall.com/uploaded_files/userfiles/files/does-coin-master-hack-work_GM406889139.pdf
- https://www.mjcorporatemall.com/uploaded_files/userfiles/files/free-chest-coin-master_GM406889139.pdf
- https://www.mjcorporatemall.com/uploaded_files/userfiles/files/coin-master-hack-2021_GM406889139.pdf
- https://www.mjcorporatemall.com/uploaded_files/userfiles/files/hack-coin-master-2021_GM406889139.pdf
- https://www.mjcorporatemall.com/uploaded_files/userfiles/files/free-robux-no-human-verification-or-survey-or-download_GM431946152.pdf
- https://www.mjcorporatemall.com/uploaded_files/userfiles/files/free-robux-rewards_GM431946152.pdf
- https://www.mjcorporatemall.com/uploaded_files/userfiles/files/free-robux-com-roblox_GM431946152.pdf
- https://www.mjcorporatemall.com/uploaded_files/userfiles/files/free-roblox-injector_GM431946152.pdf
- https://www.mjcorporatemall.com/uploaded_files/userfiles/files/roblox-studio-free-robux_GM431946152.pdf
- https://www.mjcorporatemall.com/uploaded_files/userfiles/files/master-coin-hack-app_GM406889139.pdf
- https://www.mjcorporatemall.com/uploaded_files/userfiles/files/coin-master-daily-gifts_GM406889139.pdf
- https://www.mjcorporatemall.com/uploaded_files/userfiles/files/earn-robux-now_GM431946152.pdf
- https://www.mjcorporatemall.com/uploaded_files/userfiles/files/how-to-get-free-robux-gift-cards_GM431946152.pdf
- https://www.mjcorporatemall.com/uploaded_files/userfiles/files/coin-master-free-spin-app-iphone_GM406889139.pdf
- https://www.mjcorporatemall.com/uploaded_files/userfiles/files/how-to-coin-master-spin-hack_GM406889139.pdf
- https://www.mjcorporatemall.com/uploaded_files/userfiles/files/coin-master-free-spin-link-today-download_GM406889139.pdf
- https://www.mjcorporatemall.com/uploaded_files/userfiles/files/free-mod-apk-coin-master_GM406889139.pdf
- https://www.mjcorporatemall.com/uploaded_files/userfiles/files/easy-way-to-get-robux_GM431946152.pdf
- https://www.mjcorporatemall.com/uploaded_files/userfiles/files/minecraft-download-free-download_GM479516143.pdf
- https://www.mjcorporatemall.com/uploaded_files/userfiles/files/static-moonactive-net-free-spins-coin-master_GM406889139.pdf
- http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`stream_003_off00004d35.bin` `7dba32bf6d2204f14cc8446bb2d421e181536a9cb1c989d938ebf4132f6e11e7`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x4D35	25124 bytes
`font_01_sfnt_off000086d7.bin` `1dd933c112880b232546f3aab6a17784a8f412d39fd551cc6eb31c5a04c3ce57`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x86D7	3380 bytes
`font_02_sfnt_off000092c0.bin` `51c95658009ee6a6ae875a8d4133a79c51d36fbd34bac1203a2f2fe060da7c96`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x92C0	18572 bytes

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