Malicious PDF — malware analysis report

Static analysis result for SHA-256 af51d0531269f697…

MALICIOUS

PDF

30.1 KB Created: 2021-06-09 17:02:17 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: bf7701973ca72542d7173c80b7d381f8 SHA-1: 98b99f2a868941a861bf54510c51b663ccce2e1f SHA-256: af51d0531269f697b50d84adede6ef12d9a1060e91c5b6a680c0dc7de38744a2
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links, including one identified as a malicious redirector, which is designed to lure users with promises of game-related benefits. The ML classifier strongly flagged this PDF as malicious. The embedded URL leads to a page offering 'free Roblox accounts' and 'game hack' tools, indicating a likely phishing or scam attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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/free-roblox-accounts-list-2021-game-hack In PDF document text
    • http://library.unissula.ac.id/fk//repository/coin-and-spin-link_GM406889139.pdfIn PDF document text
    • http://library.unissula.ac.id/fk/repository/coin-master-free-link-app_GM406889139.pdfIn PDF document text
    • http://library.unissula.ac.id/fk/repository/free-coins-and-spins-in-coin-master_GM406889139.pdfIn PDF document text
    • http://library.unissula.ac.id/fk/repository/coin-master-hack-apk-iphone_GM406889139.pdfIn PDF document text
    • http://library.unissula.ac.id/fk//repository/optifine-pe_GM479516143.pdfIn PDF document text
    • http://library.unissula.ac.id/fk/repository/roblox-gift-card-generator-hack_GM431946152.pdfIn PDF document text
    • http://library.unissula.ac.id/fk//repository/cheating-hacks-for-coin-master_GM406889139.pdfIn PDF document text
    • http://library.unissula.ac.id/fe/repository/free-roblox-toy-codes_GM431946152.pdfIn PDF document text
    • http://library.unissula.ac.id/fe/repository/free-robux-just-enter-username_GM431946152.pdfIn PDF document text
    • http://library.unissula.ac.id/fk/repository/coin-master-tiradas-gratis-2021_GM406889139.pdfIn PDF document text
    • http://library.unissula.ac.id/fe/repository/coin-master-apk-hacked-3526_GM406889139.pdfIn PDF document text
    • http://library.unissula.ac.id/fe/repository/coin-master-hack-iosgods_GM406889139.pdfIn PDF document text
    • http://library.unissula.ac.id/fk/repository/free-robux-master_GM431946152.pdfIn PDF document text
    • http://library.unissula.ac.id/fk/repository/how-to-play-roblox-for-free_GM431946152.pdfIn PDF document text
    • http://library.unissula.ac.id/fe/repository/minecraft-free-download-apk-softonic_GM479516143.pdfIn PDF document text
    • http://library.unissula.ac.id/fk/repository/coin-master-event-hack_GM406889139.pdfIn PDF document text
    • http://library.unissula.ac.id/fe/repository/free-spins-in-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://library.unissula.ac.id/fk//repository/how-to-get-free-robux-without-human-verification-2021_GM431946152.pdfIn PDF document text
    • http://library.unissula.ac.id/fk/repository/how-do-you-get-roblox-money_GM431946152.pdfIn PDF document text
    • http://library.unissula.ac.id/fk//repository/robux-prices_GM431946152.pdfIn PDF document text

Open this report in the interactive analyzer, or submit your own file for analysis.