MALICIOUS
258
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1534 Steal or Forge Credentials
The PDF contains a critical heuristic firing for a malicious redirector link, specifically targeting a 'game hack' lure. It also exhibits high-severity findings for fake CAPTCHA, MFA lure, and brand impersonation (Apple), all pointing towards credential harvesting. The embedded URL http://netcdn.tw/app/1330123889/pubg-40-uc-game-hack is the primary IOC, likely leading to a phishing page.
Machine Learning
- Nyx PDF Classifier clean score 0.0078
Heuristics 8
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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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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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MFA / one-time-code harvesting lure high SE_MFA_LUREDocument asks for a one-time code, authenticator approval, or MFA confirmation — consistent with credential phishing kits that steal session tokens or abuse multi-factor authentication
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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: http://netcdn.tw/app/1330123889/pubg-40-uc-game-hack.
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Urgency / deadline lure low SE_URGENCY_LUREDocument contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
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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 http://netcdn.tw/app/1330123889/pubg-40-uc-game-hack In PDF document text
- http://elibrary.smknesbu.sch.id/repository/how-do-you-get-free-stuff-in-roblox-2021_GM431946152.pdfIn PDF document text
- http://elibrary.smknesbu.sch.id/repository/how-to-hack-in-cafe-v4-in-roblox_GM431946152.pdfIn PDF document text
- http://elibrary.smknesbu.sch.id/repository/kachifpro_GM406889139.pdfIn PDF document text
- http://elibrary.smknesbu.sch.id/repository/roblox-jailbreak-btools-hack-2021_GM431946152.pdfIn PDF document text
- http://elibrary.smknesbu.sch.id/repository/roblox-hack-top_GM431946152.pdfIn PDF document text
- http://elibrary.smknesbu.sch.id/repository/free-roblox-card-generator-need-to-do-nothing_GM431946152.pdfIn PDF document text
- http://elibrary.smknesbu.sch.id/repository/coin-master-free-cards-hack_GM406889139.pdfIn PDF document text
- http://elibrary.smknesbu.sch.id/repository/coin-master-hack-mod-apk-2021-download_GM406889139.pdfIn PDF document text
- http://elibrary.smknesbu.sch.id/repository/free-coins-in-roblox_GM431946152.pdfIn PDF document text
- http://elibrary.smknesbu.sch.id/repository/how-to-hack-roblox-jailbreak_GM431946152.pdfIn PDF document text
- http://elibrary.smknesbu.sch.id/repository/how-to-get-free-robux-trading_GM431946152.pdfIn PDF document text
- http://elibrary.smknesbu.sch.id/repository/free-skin-roblox-men_GM431946152.pdfIn PDF document text
- http://elibrary.smknesbu.sch.id/repository/free-roblox-card_GM431946152.pdfIn PDF document text
- http://elibrary.smknesbu.sch.id/repository/roblox-arsenal-hack-script-pastebin_GM431946152.pdfIn PDF document text
- http://elibrary.smknesbu.sch.id/repository/how-hack-to-get-robux_GM431946152.pdfIn PDF document text
- http://elibrary.smknesbu.sch.id/repository/stream-snipe-hack-roblox_GM431946152.pdfIn PDF document text
- http://elibrary.smknesbu.sch.id/repository/naruto-oa-roblox-hack_GM431946152.pdfIn PDF document text
- http://elibrary.smknesbu.sch.id/repository/how-to-speed-hack-with-cheat-engine-roblox_GM431946152.pdfIn PDF document text
- http://elibrary.smknesbu.sch.id/repository/free-roblox-rig_GM431946152.pdfIn PDF document text
- http://elibrary.smknesbu.sch.id/repository/roblox-how-to-get-any-ingame-tool-hack_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 |
|---|---|---|---|
stream_024_off00037e79.bin |
decompressed-pdf-stream | PDF FlateDecoded stream at offset 0x37E79 | 25928 bytes |
SHA-256: 68da3481ef41fc873481f658782d9b452a0530d03f07900f530982f2fa978cdd |
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font_01_sfnt_off0003bb92.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x3BB92 | 18360 bytes |
SHA-256: ec154715db1416eb283ec9c263901a687fc7001c7b224d67c305554973ce1762 |
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