MALICIOUS
260
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
This PDF document contains multiple links to known malicious redirectors and a link farm, masquerading as game hacks and free coin generators. The presence of a fake CAPTCHA and download button lure indicates an attempt to trick the user into clicking these links, likely leading to a scam or the download of a second-stage payload. The ML classifier also strongly flagged this PDF as malicious.
Machine Learning
- Nyx PDF Classifier malicious score 0.9796
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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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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Fake CAPTCHA / human verification prompt high SE_FAKE_CAPTCHADocument displays a fake CAPTCHA or human-verification prompt — used to trick users into running commands or pressing keyboard shortcuts
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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 https://netcdn.tw/app/431946152/roblox-sprinting-simulator-2-hack-game-hack In PDF document text
- https://www.fluidtecheng.com/uploaded_files/userfiles/files/how-to-get-free-coins-on-flip-master_GM406889139.pdfIn PDF document text
- https://www.fluidtecheng.com/uploaded_files/userfiles/files/how-to-get-robux-for-free-2021_GM431946152.pdfIn PDF document text
- https://www.fluidtecheng.com/uploaded_files/userfiles/files/how-to-get-roblox-premium-for-free-2021_GM431946152.pdfIn PDF document text
- https://www.fluidtecheng.com/uploaded_files/userfiles/files/how-to-get-free-roebucks-on-roblox_GM431946152.pdfIn PDF document text
- https://www.fluidtecheng.com/uploaded_files/userfiles/files/free-robux-without-any-verification_GM431946152.pdfIn PDF document text
- https://www.fluidtecheng.com/uploaded_files/userfiles/files/get-free-robux-generator_GM431946152.pdfIn PDF document text
- https://www.fluidtecheng.com/uploaded_files/userfiles/files/coin-master-vip-hack_GM406889139.pdfIn PDF document text
- https://www.fluidtecheng.com/uploaded_files/userfiles/files/free-minecraft-games-for-kids_GM479516143.pdfIn PDF document text
- https://www.fluidtecheng.com/uploaded_files/userfiles/files/roblox-robux-generator-2021_GM431946152.pdfIn PDF document text
- https://www.fluidtecheng.com/uploaded_files/userfiles/files/free-roblox-toy-codes_GM431946152.pdfIn PDF document text
- https://www.fluidtecheng.com/uploaded_files/userfiles/files/bloxpage-free-robux_GM431946152.pdfIn PDF document text
- https://www.fluidtecheng.com/uploaded_files/userfiles/files/coin-master-free-spins-daily-link-game-mod_GM406889139.pdfIn PDF document text
- https://www.fluidtecheng.com/uploaded_files/userfiles/files/earn-robux-com_GM431946152.pdfIn PDF document text
- https://www.fluidtecheng.com/uploaded_files/userfiles/files/hack-coin-master-using-pc_GM406889139.pdfIn PDF document text
- https://www.fluidtecheng.com/uploaded_files/userfiles/files/free-daily-spin-coin-master-game_GM406889139.pdfIn PDF document text
- https://www.fluidtecheng.com/uploaded_files/userfiles/files/hack-na-robuxy-w-roblox_GM431946152.pdfIn PDF document text
- https://www.fluidtecheng.com/uploaded_files/userfiles/files/coin-master-hack-using-lucky-patcher_GM406889139.pdfIn PDF document text
- https://www.fluidtecheng.com/uploaded_files/userfiles/files/coin-master-free-spins-link-download_GM406889139.pdfIn PDF document text
- https://www.fluidtecheng.com/uploaded_files/userfiles/files/minecraft-free-app_GM479516143.pdfIn PDF document text
- https://www.fluidtecheng.com/uploaded_files/userfiles/files/free-hacks-for-coin-master_GM406889139.pdfIn PDF document text
- http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text
Extracted artifacts 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
stream_004_off00004fab.bin |
decompressed-pdf-stream | PDF FlateDecoded stream at offset 0x4FAB | 27332 bytes |
SHA-256: 5939ad6d6fd203f676231683d49485a59f4110a202e090c1240fb61c96d01b23 |
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font_01_sfnt_off00008de5.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x8DE5 | 2944 bytes |
SHA-256: 3d2f34d044f6bbab651c9dbebb5fa2ab07f0b7854321761db770840783b352b1 |
|||
font_02_sfnt_off00009811.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x9811 | 19392 bytes |
SHA-256: 4d0316c6a3d9604eafbcb8ae067b56fb0661b2d326bedf78d41c12cef84200df |
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