MALICIOUS
200
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The PDF document contains multiple links to known malicious redirectors and infrastructure, disguised as a lure for 'free Robux' or game hacks. The ML classifier and specific heuristics strongly indicate malicious intent, likely for credential phishing or to serve a second-stage payload. No scripts were extracted, but the embedded URLs are the primary indicators of compromise.
Machine Learning
- Nyx PDF Classifier malicious score 0.9447
Heuristics 5
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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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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/free-robux-no-verification-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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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/free-robux-no-verification-game-hack In PDF document text
- https://mubaohiemasia.com/ckfinder/userfiles/files/free-robux-no-human-verification_GM431946152.pdfIn PDF document text
- https://mubaohiemasia.com/ckfinder/userfiles/files/how-to-get-free-robux-no-human-verification_GM431946152.pdfIn PDF document text
- https://mubaohiemasia.com/ckfinder/userfiles/files/free-robux-place_GM431946152.pdfIn PDF document text
- https://mubaohiemasia.com/ckfinder/userfiles/files/links-to-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
- https://mubaohiemasia.com/ckfinder/userfiles/files/free-robux-just-enter-username-and-password_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_off00003485.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x3485 | 26908 bytes |
SHA-256: c4ee8b75ae7c924fc30cad7895b6e2e8555e64905f5c92c234511ca261045150 |
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font_01_sfnt_off0000716f.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x716F | 18600 bytes |
SHA-256: 361892a278de990f6dfe9fe9f512a0ec39aeba1740037781b92f32c6ad2b5051 |
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