MALICIOUS
188
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
T1203 Exploitation for Client Execution
The PDF contains embedded JavaScript and a critical heuristic firing indicates a malicious redirector link. The document body and heuristics point to a lure for a "Coin Master" game hack, which redirects to the malicious URL http://netcdn.co/app/406889139/coin-master-free-100-spin-link-game-hack. This suggests the file is designed to trick users into visiting a malicious site, likely for further exploitation or credential harvesting.
Machine Learning
- Nyx PDF Classifier malicious score 0.9984
Heuristics 6
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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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Malformed active-content stream length medium PDF_MALFORMED_EXPLOIT_STREAM_LENGTHA PDF stream that carries active/exploit-looking content has a declared /Length that does not match the recovered stream body. Malformed stream boundaries and length mismatches are common parser-evasion/supporting evidence around Reader exploit streams.
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Embedded JS stream low PDF_JSPDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
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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.co/app/406889139/coin-master-free-100-spin-link-game-hack In PDF document text
- https://www.marshlands.staffs.sch.uk/admin/ckfinder/userfiles/files/coin-master-hack-tool-pc_GM406889139.pdfIn PDF document text
- https://www.marshlands.staffs.sch.uk/admin/ckfinder/userfiles/files/free-roblox-clothes_GM431946152.pdfIn PDF document text
- https://www.marshlands.staffs.sch.uk/admin/ckfinder/userfiles/files/coin-master-free-daily-spins_GM406889139.pdfIn PDF document text
- https://www.marshlands.staffs.sch.uk/admin/ckfinder/userfiles/files/my-minecraft-account-was-hacked_GM479516143.pdfIn PDF document text
- https://www.marshlands.staffs.sch.uk/admin/ckfinder/userfiles/files/free-robux-mod_GM431946152.pdfIn PDF document text
- https://www.marshlands.staffs.sch.uk/admin/ckfinder/userfiles/files/coin-master-daily-free-spins_GM406889139.pdfIn PDF document text
- https://www.marshlands.staffs.sch.uk/admin/ckfinder/userfiles/files/free-robux-codes-no-verification_GM431946152.pdfIn PDF document text
- https://www.marshlands.staffs.sch.uk/admin/ckfinder/userfiles/files/minecraft-hack-download_GM479516143.pdfIn PDF document text
- https://www.marshlands.staffs.sch.uk/admin/ckfinder/userfiles/files/free-mods-for-minecraft-pe_GM479516143.pdfIn PDF document text
- https://www.marshlands.staffs.sch.uk/admin/ckfinder/userfiles/files/how-to-change-your-username-in-roblox-for-free_GM431946152.pdfIn PDF document text
- https://www.marshlands.staffs.sch.uk/admin/ckfinder/userfiles/files/free-cheat-codes-for-coin-master_GM406889139.pdfIn PDF document text
- https://www.marshlands.staffs.sch.uk/admin/ckfinder/userfiles/files/coin-master-hacks-for-free-spins_GM406889139.pdfIn PDF document text
- https://www.marshlands.staffs.sch.uk/admin/ckfinder/userfiles/files/how-to-make-your-own-minecraft-pe-server-for-free_GM479516143.pdfIn PDF document text
- https://www.marshlands.staffs.sch.uk/admin/ckfinder/userfiles/files/free-robux-hack-no-human-verification-or-survey_GM431946152.pdfIn PDF document text
- https://www.marshlands.staffs.sch.uk/admin/ckfinder/userfiles/files/wwwhaktutsin-2021-08-coinmasterfreespinandcoinlinkhtml-m-1_GM406889139.pdfIn PDF document text
- https://www.marshlands.staffs.sch.uk/admin/ckfinder/userfiles/files/coin-master-hack-without-verification-site-zyngaplayerforumscom_GM406889139.pdfIn PDF document text
- https://www.marshlands.staffs.sch.uk/admin/ckfinder/userfiles/files/8bp-hack-coin-master_GM406889139.pdfIn PDF document text
- https://www.marshlands.staffs.sch.uk/admin/ckfinder/userfiles/files/how-to-get-robux-for-free-2021_GM431946152.pdfIn PDF document text
- https://www.marshlands.staffs.sch.uk/admin/ckfinder/userfiles/files/free-robux-easy_GM431946152.pdfIn PDF document text
- https://www.marshlands.staffs.sch.uk/admin/ckfinder/userfiles/files/free-robux-for-kids_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_off00003355.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x3355 | 22796 bytes |
SHA-256: 8e2010e341d7fc9e285028685b57f18518ac31a9e355d1dffa50a426a64f7bba |
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font_01_sfnt_off00006625.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x6625 | 18620 bytes |
SHA-256: cfc54751512bc7e110264f73785061a475bf2a76f79571e558b4b9cd93d36ac5 |
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