PDF malware analysis — malicious · 7c66fee336e638b9

MALICIOUS

PDF

34.9 KB Created: 2021-07-09 08:27:45 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-05

MD5: 071f0a3c33489cf90ba3f1b3efaee49b SHA-1: 3d4226836d947d987b28481f13762050417689fc SHA-256: 7c66fee336e638b9020bf711cf6ecf04f9fd5aadf4ac11fddcf992266abf9d00

82 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF document contains a lure for a game hack, directing users to the URL http://netcdn.tw/app/406889139/coin-master-35-2-hack-game-hack. This URL is associated with a high-risk heuristic for game hack redirects, indicating a likely attempt to trick users into downloading malware or visiting a malicious site. The ML classifier also flagged this PDF as malicious with high confidence.

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/406889139/coin-master-35-2-hack-game-hack PDF link annotation
- https://loba.com.vn/public/upload/files/robloxcom-free-kkk-k-k-k-k-m_GM431946152.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/how-to-hack-roblox-assassin-2021_GM431946152.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/free-spins-and-coins-from-coin-master-game_GM406889139.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/coin-master-spin-link_GM406889139.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/roblox-avatar-free_GM431946152.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/free-robux-without-verification_GM431946152.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/how-to-get-a-lot-of-robux-for-free-2021_GM431946152.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/omg-this-worked-how-to-get-1-million-free-robux_GM431946152.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/roblox-btools-hack-2021-download_GM431946152.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/how-can-i-get-free-coinsn-coin-master_GM406889139.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/real-coin-master-free-spins_GM406889139.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/robux-how-to-make-a-promo-code-hack_GM431946152.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/roblox-hack-com_GM431946152.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/rbl-gg-free-robux_GM431946152.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/how-to-make-a-roblox-script-hack_GM431946152.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/coin-master-hack-pro-gamers_GM406889139.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/free-robux-roblox-studio_GM431946152.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/get-free-robux-n-roblox-hack_GM431946152.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/free-pokemon-givers-roblox_GM431946152.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/minecraft-items_GM479516143.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
`stream_002_off0000309d.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x309D	23360 bytes
SHA-256: `9846ead8e01adb70cc765acaba2c51b337b92f9fc936a29ba09a8850f36bcf43`
`font_01_sfnt_off000064fe.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x64FE	18436 bytes
SHA-256: `fd3cc82f4c1368dfa344b5ae38f998be07616c2019a2f52b65594bfa2782c451`

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