MALICIOUS
222
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
This PDF document employs a fake CAPTCHA and brand impersonation lure to trick users into clicking links for game hacks and free currency. The document contains numerous links to external sites, many of which appear to be part of a link farm designed to host further lures or potentially malicious content. The ML classifier strongly indicated maliciousness, and the overall structure suggests a phishing or malware distribution attempt.
Machine Learning
- Nyx PDF Classifier malicious score 0.9464
Heuristics 7
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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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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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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.online/app/431946152/free-robux-no-offers-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.online/app/431946152/free-robux-no-offers-game-hack PDF link annotation
- http://perpustakaan.stietenggarong.ac.id/repository/free-robux-co_GM431946152.pdfIn PDF document text
- http://perpustakaan.stietenggarong.ac.id/repository/freerobux-hack-us_GM431946152.pdfIn PDF document text
- http://perpustakaan.stietenggarong.ac.id/repository/bloxpage-free-robux_GM431946152.pdfIn PDF document text
- http://perpustakaan.stietenggarong.ac.id/repository/how-to-hack-a-roblox-account-2021_GM431946152.pdfIn PDF document text
- http://perpustakaan.stietenggarong.ac.id/repository/coin-master-hack-version-download-ios_GM406889139.pdfIn PDF document text
- http://perpustakaan.stietenggarong.ac.id/repository/free-spins-coin-master-ios-2021_GM406889139.pdfIn PDF document text
- http://perpustakaan.stietenggarong.ac.id/repository/free-bling-bling-card-coin-master_GM406889139.pdfIn PDF document text
- http://perpustakaan.stietenggarong.ac.id/repository/mcpe-master-unlimited-coins-free-download_GM406889139.pdfIn PDF document text
- http://perpustakaan.stietenggarong.ac.id/repository/coin-master-free-coins-link-facebook_GM406889139.pdfIn PDF document text
- http://perpustakaan.stietenggarong.ac.id/repository/coin-master-ios-hack_GM406889139.pdfIn PDF document text
- http://perpustakaan.stietenggarong.ac.id/repository/free-robux-no-verification-or-survey_GM431946152.pdfIn PDF document text
- http://perpustakaan.stietenggarong.ac.id/repository/coin-master-links-for-today_GM406889139.pdfIn PDF document text
- http://perpustakaan.stietenggarong.ac.id/repository/how-to-get-free-spins-in-coin-master_GM406889139.pdfIn PDF document text
- http://perpustakaan.stietenggarong.ac.id/repository/free-coin-master-hacks-no-verification-or-survey_GM406889139.pdfIn PDF document text
- http://perpustakaan.stietenggarong.ac.id/repository/claim-free-spins-coin-master_GM406889139.pdfIn PDF document text
- http://perpustakaan.stietenggarong.ac.id/repository/free-spins-on-coin-master-2021_GM406889139.pdfIn PDF document text
- http://perpustakaan.stietenggarong.ac.id/repository/how-to-get-more-robux_GM431946152.pdfIn PDF document text
- http://perpustakaan.stietenggarong.ac.id/repository/roblox-earn_GM431946152.pdfIn PDF document text
- http://perpustakaan.stietenggarong.ac.id/repository/coin-master-daily-gifts_GM406889139.pdfIn PDF document text
- http://perpustakaan.stietenggarong.ac.id/repository/free-coins-coin-master-link_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_off0000541c.bin |
decompressed-pdf-stream | PDF FlateDecoded stream at offset 0x541C | 25460 bytes |
SHA-256: 924c5e9b5e0f9a3cfec4fda4e339308c4be4dd4da0b10c21cb28c351d83ceb71 |
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font_01_sfnt_off00008feb.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x8FEB | 7488 bytes |
SHA-256: 04bfd8d82ec9a099c839e8bf0c51535ebfe573ca4f451317976215d594270058 |
|||
font_02_sfnt_off0000a897.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xA897 | 18012 bytes |
SHA-256: db6be32425767485114cb9000642ed63280f0807e0fe45793765b8e181fce2c0 |
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