PDF malware analysis — malicious · 40ebef438684ffd8

MALICIOUS

PDF

35.7 KB Created: 2021-07-08 07:12:26 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-05

MD5: 1d34abc66e412ed255f8dde11e8a8390 SHA-1: c9268b7ce8c4d07f8b3e846c414e45e5ca5aea17 SHA-256: 40ebef438684ffd82941bf61ee56f4b3af7f13388a30578135698bb7e64f34a0

82 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF document contains a lure for a 'Minecraft Hacked Client Download' and a high-confidence heuristic firing for a game hack redirector. The embedded URL, http://netcdn.tw/app/479516143/minecraft-hacked-client-download-game-hack, likely serves as a landing page for malware or further phishing attempts. The document body and heuristics strongly suggest a social engineering tactic to trick users into downloading potentially malicious software.

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/479516143/minecraft-hacked-client-download-game-hack PDF link annotation
- https://www.captaingogo.com/uploaded_files/userfiles/files/cheats-for-coin-master_GM406889139.pdfIn PDF document text
- https://www.captaingogo.com/uploaded_files/userfiles/files/ultimate-driving-delancy-gorge-roblox-money-hack_GM431946152.pdfIn PDF document text
- https://www.captaingogo.com/uploaded_files/userfiles/files/hack-mod-coin-master_GM406889139.pdfIn PDF document text
- https://www.captaingogo.com/uploaded_files/userfiles/files/roblox-ios-robux-hack_GM431946152.pdfIn PDF document text
- https://www.captaingogo.com/uploaded_files/userfiles/files/can-you-really-hack-coin-master-ios_GM406889139.pdfIn PDF document text
- https://www.captaingogo.com/uploaded_files/userfiles/files/what-is-a-robux_GM431946152.pdfIn PDF document text
- https://www.captaingogo.com/uploaded_files/userfiles/files/coin-master-mod_GM406889139.pdfIn PDF document text
- https://www.captaingogo.com/uploaded_files/userfiles/files/robux-hack-generator_GM431946152.pdfIn PDF document text
- https://www.captaingogo.com/uploaded_files/userfiles/files/roblox-hack-gui-tutorial_GM431946152.pdfIn PDF document text
- https://www.captaingogo.com/uploaded_files/userfiles/files/coin-master-free-cards_GM406889139.pdfIn PDF document text
- https://www.captaingogo.com/uploaded_files/userfiles/files/how-to-hack-roblox-accounts-2021-easy_GM431946152.pdfIn PDF document text
- https://www.captaingogo.com/uploaded_files/userfiles/files/free-minecraft-server-hosting-24-7_GM479516143.pdfIn PDF document text
- https://www.captaingogo.com/uploaded_files/userfiles/files/you-get-free-robux_GM431946152.pdfIn PDF document text
- https://www.captaingogo.com/uploaded_files/userfiles/files/how-to-get-free-robux-2021-july_GM431946152.pdfIn PDF document text
- https://www.captaingogo.com/uploaded_files/userfiles/files/free-spins-coin-master-twitter_GM406889139.pdfIn PDF document text
- https://www.captaingogo.com/uploaded_files/userfiles/files/free-robux-ultimategamer-365_GM431946152.pdfIn PDF document text
- https://www.captaingogo.com/uploaded_files/userfiles/files/minecraft-java-for-free_GM479516143.pdfIn PDF document text
- https://www.captaingogo.com/uploaded_files/userfiles/files/free-animation-package-roblox_GM431946152.pdfIn PDF document text
- https://www.captaingogo.com/uploaded_files/userfiles/files/free-roblox-backdoor_GM431946152.pdfIn PDF document text
- https://www.captaingogo.com/uploaded_files/userfiles/files/free-games-like-roblox_GM431946152.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_off0000343d.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x343D	23300 bytes
SHA-256: `7c2026421e1afe5251590a29542ec5eaa27881e1e4576dd3d6dce04b8eabb6ea`
`font_01_sfnt_off00006795.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6795	18748 bytes
SHA-256: `aa0b1002d10e7fb60172ce49cbdaa5952bdb54bf3081edf3cb6a3acd957b60a1`

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