Malicious PDF — malware analysis report

Static analysis result for SHA-256 e71c6ba772719472…

MALICIOUS

PDF

18.9 KB Created: 2021-06-09 03:05:19 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 1181edbf90354be20d9e1acbc7433996 SHA-1: e33e3f5891d4e6f5f4778788a9ce63486ba7ca04 SHA-256: e71c6ba772719472eb24350df5d1f7dcd21522dfdc851133e99e99f0e781c200
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links designed to lure users with promises of free in-game currency and hacks. These links redirect to known malicious infrastructure, specifically a generator site that likely leads to further malware or scams. The ML classifier also strongly indicated maliciousness.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

Heuristics 3

  • PDF links to a 'free generator / game hack' redirector critical PDF_GAME_HACK_REDIRECT_LURE
    PDF'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.
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF 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.
  • Embedded URL info EMBEDDED_URL
    One 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.tw/app/431946152/how-to-get-20210-robux-for-free-2021-game-hack In PDF document text
    • http://poltekkesbanten.ac.id/e-lib/repository/free-minecraft-hacks_GM479516143.pdfIn PDF document text
    • http://poltekkesbanten.ac.id/e-lib/repository/blogger-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://poltekkesbanten.ac.id/e-lib/repository/free-robux-app_GM431946152.pdfIn PDF document text
    • http://poltekkesbanten.ac.id/e-lib/repository/robux-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • http://poltekkesbanten.ac.id/e-lib/repository/how-to-get-free-things-on-roblox_GM431946152.pdfIn PDF document text
    • http://poltekkesbanten.ac.id/e-lib/repository/www-free-robux_GM431946152.pdfIn PDF document text
    • http://poltekkesbanten.ac.id/e-lib/repository/regal-world-coin-master_GM406889139.pdfIn PDF document text
    • http://poltekkesbanten.ac.id/e-lib/repository/how-to-get-free-robux-app_GM431946152.pdfIn PDF document text
    • http://poltekkesbanten.ac.id/e-lib/repository/free-spins-coin-master-daily_GM406889139.pdfIn PDF document text
    • http://poltekkesbanten.ac.id/e-lib/repository/robux-free-gift-card_GM431946152.pdfIn PDF document text
    • http://poltekkesbanten.ac.id/e-lib/repository/daily-free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://poltekkesbanten.ac.id/e-lib/repository/how-to-hack-someone-on-roblox-2021-new-method_GM431946152.pdfIn PDF document text
    • http://poltekkesbanten.ac.id/e-lib/repository/free-spins-for-coin-master-ios_GM406889139.pdfIn PDF document text
    • http://poltekkesbanten.ac.id/e-lib/repository/2021-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://poltekkesbanten.ac.id/e-lib/repository/free-minecraft-premium-account_GM479516143.pdfIn PDF document text
    • http://poltekkesbanten.ac.id/e-lib/repository/how-to-hack-coin-master-root_GM406889139.pdfIn PDF document text
    • http://poltekkesbanten.ac.id/e-lib/repository/android-coin-master-hack-2021_GM406889139.pdfIn PDF document text
    • http://poltekkesbanten.ac.id/e-lib/repository/best-minecraft-hacked-client-2021_GM479516143.pdfIn PDF document text
    • http://poltekkesbanten.ac.id/e-lib/repository/roblox-hacks-and-cheats_GM431946152.pdfIn PDF document text
    • http://poltekkesbanten.ac.id/e-lib/repository/how-to-get-free-robux-no-verification-2021_GM431946152.pdfIn PDF document text

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