MALICIOUS
260
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
This PDF document employs a fake CAPTCHA lure to trick users into clicking malicious links, disguised as a game hack generator. The document contains numerous links to external PDFs, many of which are likely part of a link farm designed to improve SEO for malicious content. The primary malicious redirector URL is https://netcdn.online/app/406889139/freegames911com-coinmastertipsandcheats2021freecoinsandspins-game-hack, which is flagged as known malicious infrastructure. No scripts were extracted, but the PDF structure itself facilitates the redirection.
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.online/app/406889139/freegames911com-coinmastertipsandcheats2021freecoinsandspins-game-hack In PDF document text
- http://perpustakaan.poltekom.ac.id/repository/free-robux-giveaway-live-2021_GM431946152.pdfIn PDF document text
- http://perpustakaan.poltekom.ac.id/repository/how-to-get-free-unlimited-robux_GM431946152.pdfIn PDF document text
- http://perpustakaan.poltekom.ac.id/repository/roblox-script-hacks_GM431946152.pdfIn PDF document text
- http://perpustakaan.poltekom.ac.id/repository/free-spins-coin-master-hack-2021_GM406889139.pdfIn PDF document text
- http://perpustakaan.poltekom.ac.id/repository/roblox-accounts-for-sale-free_GM431946152.pdfIn PDF document text
- http://perpustakaan.poltekom.ac.id/repository/how-to-download-minecraft-for-free_GM479516143.pdfIn PDF document text
- http://perpustakaan.poltekom.ac.id/repository/how-to-get-free-robux-no-human-verification_GM431946152.pdfIn PDF document text
- http://perpustakaan.poltekom.ac.id/repository/free-robux-with-no-human-verification_GM431946152.pdfIn PDF document text
- http://perpustakaan.poltekom.ac.id/repository/free-roblox-com_GM431946152.pdfIn PDF document text
- http://perpustakaan.poltekom.ac.id/repository/free-hair-roblox-boy_GM431946152.pdfIn PDF document text
- http://perpustakaan.poltekom.ac.id/repository/www-free-robux-com_GM431946152.pdfIn PDF document text
- http://perpustakaan.poltekom.ac.id/repository/coin-master-free-spins-2021-hack_GM406889139.pdfIn PDF document text
- http://perpustakaan.poltekom.ac.id/repository/pubg-uc-at-cheap-price_GM1330123889.pdfIn PDF document text
- http://perpustakaan.poltekom.ac.id/repository/free-robux-no-human-verification-no-survey_GM431946152.pdfIn PDF document text
- http://perpustakaan.poltekom.ac.id/repository/coin-master-unlimited-spin-link_GM406889139.pdfIn PDF document text
- http://perpustakaan.poltekom.ac.id/repository/free-links-for-coin-master-2021_GM406889139.pdfIn PDF document text
- http://perpustakaan.poltekom.ac.id/repository/free-coins-coin-master-blog_GM406889139.pdfIn PDF document text
- http://perpustakaan.poltekom.ac.id/repository/how-to-hack-in-roblox-prison-life_GM431946152.pdfIn PDF document text
- http://perpustakaan.poltekom.ac.id/repository/coin-master-lucky-patcher-hack_GM406889139.pdfIn PDF document text
- http://perpustakaan.poltekom.ac.id/repository/robux-survey_GM431946152.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_off000053b7.bin |
decompressed-pdf-stream | PDF FlateDecoded stream at offset 0x53B7 | 25304 bytes |
SHA-256: b5cfc3e11878a2ad9af268f53b89fd0bc6e093a7a597071b81a971e55efdd64f |
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font_01_sfnt_off00008d3c.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x8D3C | 2880 bytes |
SHA-256: b053084cafd01c649462d87667ba56c569d6480ce60e7d20ae57ef6124cf178e |
|||
font_02_sfnt_off00009727.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x9727 | 19340 bytes |
SHA-256: ab752c077329254f7c43d77d98e16486f3a713dc065ac717a3b4fd91723259e7 |
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