MALICIOUS
182
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
This PDF document was flagged as malicious by an ML classifier. It uses brand-impersonation credential phishing. The file embeds a large number of external links characteristic of an SEO link farm, routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.
Machine Learning
- Nyx PDF Classifier malicious score 0.9971
Heuristics 6
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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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PDF links to a 'free generator / game hack' redirector high 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.
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Brand-impersonation credential phishing lure high SE_BRAND_CREDENTIAL_PHISHDocument impersonates a well-known consumer brand and uses account-security / verification language ('unusual activity', 'account on hold', 'verify your account') to steer the reader to a credential-harvesting link. Corroborated by: call-to-action link host does not match the impersonated brand: https://netcdn.xyz/app/431946152/roblox-free-items-game-hack.
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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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External URI info PDF_URIPDF contains an external URL action
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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.xyz/app/431946152/roblox-free-items-game-hack PDF link annotation
- https://qmsystemsbrochure.com/admin/ckfinder/userfiles/files/free-robux-with-no-survey_GM431946152.pdfIn PDF document text
- https://qmsystemsbrochure.com/admin/ckfinder/userfiles/files/spin-free-coin-master_GM406889139.pdfIn PDF document text
- https://qmsystemsbrochure.com/admin/ckfinder/userfiles/files/free-robux-generator-2021-no-survey_GM431946152.pdfIn PDF document text
- https://qmsystemsbrochure.com/admin/ckfinder/userfiles/files/lastrick-com-coin-master-hack_GM406889139.pdfIn PDF document text
- https://qmsystemsbrochure.com/admin/ckfinder/userfiles/files/haktuts-coin-master-free-spins-2021_GM406889139.pdfIn PDF document text
- https://qmsystemsbrochure.com/admin/ckfinder/userfiles/files/free-spins-for-coin-master-2021_GM406889139.pdfIn PDF document text
- https://qmsystemsbrochure.com/admin/ckfinder/userfiles/files/smart-lodhi-coin-master-hack_GM406889139.pdfIn PDF document text
- https://qmsystemsbrochure.com/admin/ckfinder/userfiles/files/is-it-possible-to-get-free-robux_GM431946152.pdfIn PDF document text
- https://qmsystemsbrochure.com/admin/ckfinder/userfiles/files/orewards-com-free-robux_GM431946152.pdfIn PDF document text
- https://qmsystemsbrochure.com/admin/ckfinder/userfiles/files/free-coin-master-spins-link_GM406889139.pdfIn PDF document text
- https://qmsystemsbrochure.com/admin/ckfinder/userfiles/files/2021-no-human-verification-hack-for-coin-master_GM406889139.pdfIn PDF document text
- https://qmsystemsbrochure.com/admin/ckfinder/userfiles/files/coin-master-unlimited-coins-hack-apk-download_GM406889139.pdfIn PDF document text
- https://qmsystemsbrochure.com/admin/ckfinder/userfiles/files/free-2021-robux_GM431946152.pdfIn PDF document text
- https://qmsystemsbrochure.com/admin/ckfinder/userfiles/files/coin-master-free-coins-and-spins-link_GM406889139.pdfIn PDF document text
- https://qmsystemsbrochure.com/admin/ckfinder/userfiles/files/roblox-free-robux-hack_GM431946152.pdfIn PDF document text
- https://qmsystemsbrochure.com/admin/ckfinder/userfiles/files/what-games-on-roblox-give-you-free-robux_GM431946152.pdfIn PDF document text
- https://qmsystemsbrochure.com/admin/ckfinder/userfiles/files/free-robux-hack-us_GM431946152.pdfIn PDF document text
- https://qmsystemsbrochure.com/admin/ckfinder/userfiles/files/coin-master-daily-free-spins-haktuts_GM406889139.pdfIn PDF document text
- https://qmsystemsbrochure.com/admin/ckfinder/userfiles/files/daily-free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
- https://qmsystemsbrochure.com/admin/ckfinder/userfiles/files/download-coin-master-apk-hack_GM406889139.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_off00004ba9.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x4BA9 | 24992 bytes |
SHA-256: 389eb2d5b9b3e323cb180f21ca909310b892c14d3800b8f828309959e29e288d |
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font_01_sfnt_off0000848b.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x848B | 18312 bytes |
SHA-256: 0f8472b221d38b56aa502dc338bcb8175d724340a5db3d89f71a6c106e3918a4 |
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