MALICIOUS
220
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF contains numerous links to external sites, including a primary redirector at http://netcdn.tw/app/406889139/free-spin-appscoin-master-game-hack, disguised as "free generator / game hack" lures. It also features a large number of links to other PDFs hosted on www.mucinvitinh.vn, suggesting a link farm designed to improve SEO for malicious content. The ML classifier strongly supports the malicious verdict, and the overall structure indicates a phishing or malware distribution attempt.
Machine Learning
- Nyx PDF Classifier malicious score 0.9980
Heuristics 5
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PDF links to a 'free generator / game hack' redirector critical PDF_GAME_HACK_REDIRECT_LUREPDF'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. CRITICAL on its own: the /app/<id>/<slug>-game-hack path shape is unambiguous scam infra, and the host rotates so a host-list match can't be relied on.
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PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINKPDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
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Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARMSmall PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
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Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTONDocument contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
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Embedded URL info EMBEDDED_URLOne 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/free-spin-appscoin-master-game-hack In PDF document text
- http://www.mucinvitinh.vn/public/images/image_uploads/files/how-to-get-the-boss-packet-for-free-roblox_GM431946152.pdfIn PDF document text
- http://www.mucinvitinh.vn/public/images/image_uploads/files/how-to-be-thanos-in-roblox-for-free_GM431946152.pdfIn PDF document text
- http://www.mucinvitinh.vn/public/images/image_uploads/files/tiktok-free-view-iphone-7-plus_GM835599320.pdfIn PDF document text
- http://www.mucinvitinh.vn/public/images/image_uploads/files/free-roblox-scripts_GM431946152.pdfIn PDF document text
- http://www.mucinvitinh.vn/public/images/image_uploads/files/how-to-get-20210-robux-for-free_GM431946152.pdfIn PDF document text
- http://www.mucinvitinh.vn/public/images/image_uploads/files/coin-master-ios-gods-hack_GM406889139.pdfIn PDF document text
- http://www.mucinvitinh.vn/public/images/image_uploads/files/roblox-hacks-ru_GM431946152.pdfIn PDF document text
- http://www.mucinvitinh.vn/public/images/image_uploads/files/cch-ly-robux-free-ko-hack_GM431946152.pdfIn PDF document text
- http://www.mucinvitinh.vn/public/images/image_uploads/files/minecraft-for-chromebook-free_GM479516143.pdfIn PDF document text
- http://www.mucinvitinh.vn/public/images/image_uploads/files/roblox-hack-name-and-password_GM431946152.pdfIn PDF document text
- http://www.mucinvitinh.vn/public/images/image_uploads/files/how-do-you-get-free-admin-in-roblox_GM431946152.pdfIn PDF document text
- http://www.mucinvitinh.vn/public/images/image_uploads/files/how-to-get-verified-on-tiktok-for-free-2021_GM835599320.pdfIn PDF document text
- http://www.mucinvitinh.vn/public/images/image_uploads/files/get-me-free-robux_GM431946152.pdfIn PDF document text
- http://www.mucinvitinh.vn/public/images/image_uploads/files/free-robux-with-no-verification_GM431946152.pdfIn PDF document text
- http://www.mucinvitinh.vn/public/images/image_uploads/files/roblox-cheat-engine-fly-hack_GM431946152.pdfIn PDF document text
- http://www.mucinvitinh.vn/public/images/image_uploads/files/free-robux-generator-no-download-or-survey-2021_GM431946152.pdfIn PDF document text
- http://www.mucinvitinh.vn/public/images/image_uploads/files/roblox-hack-download-no-survey-no-password_GM431946152.pdfIn PDF document text
- http://www.mucinvitinh.vn/public/images/image_uploads/files/coin-master-hack-without-human-verification-2021_GM406889139.pdfIn PDF document text
- http://www.mucinvitinh.vn/public/images/image_uploads/files/is-there-a-way-to-get-minecraft-for-free_GM479516143.pdfIn PDF document text
- http://www.mucinvitinh.vn/public/images/image_uploads/files/how-to-get-free-robux-without-paying_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_off0000330e.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x330E | 22484 bytes |
SHA-256: 87445478dfc1554688f586294abc5e275517385a6dece0e171821dc47703d268 |
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font_01_sfnt_off00006524.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x6524 | 18176 bytes |
SHA-256: f98b14fa014d7e4f340675e0a40dd89d5d834238fa4c598c163f2051dae61cd0 |
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