Malicious PDF — malware analysis report

Static analysis result for SHA-256 af2097f567c92c77…

MALICIOUS

PDF

36.4 KB Created: 2021-06-28 20:52:48 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-22
MD5: 2b13c66ed9c8268d784d7298a7450aed SHA-1: 1b89bd01d257e2ee8a0a301bd9080289ecf8df81 SHA-256: af2097f567c92c77a4b99c1b9f8b42186bae6cc8e4c4e962eaecb7702d563f2e
160 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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 http://netcdn.co/app/431946152/free-robux-quiz-and-survey-game-hack In PDF document text
    • http://vetmed.fkh.unair.ac.id/repository/is-minecraft-vr-free_GM479516143.pdfIn PDF document text
    • http://vetmed.fkh.unair.ac.id/repository/how-to-get-minecraft-for-free-on-pc_GM479516143.pdfIn PDF document text
    • http://www.vetmed.fkh.unair.ac.id/repository/best-free-roblox-exploits-2021_GM431946152.pdfIn PDF document text
    • http://www.vetmed.fkh.unair.ac.id/repository/free-onlne-roblox_GM431946152.pdfIn PDF document text
    • http://www.vetmed.fkh.unair.ac.id/repository/roblox-play-roblox-for-free_GM431946152.pdfIn PDF document text
    • http://www.vetmed.fkh.unair.ac.id/repository/easy-coin-master-hack-without-verification_GM406889139.pdfIn PDF document text
    • http://www.vetmed.fkh.unair.ac.id/repository/free-robux-codes-no-human-verification_GM431946152.pdfIn PDF document text
    • http://vetmed.fkh.unair.ac.id/repository/roblox-free-svg_GM431946152.pdfIn PDF document text
    • http://vetmed.fkh.unair.ac.id/repository/rbx-gg-free-robux_GM431946152.pdfIn PDF document text
    • http://www.vetmed.fkh.unair.ac.id/repository/roblox-free-clothes-codes_GM431946152.pdfIn PDF document text
    • http://www.vetmed.fkh.unair.ac.id/repository/how-to-host-a-minecraft-server-for-free_GM479516143.pdfIn PDF document text
    • http://www.vetmed.fkh.unair.ac.id/repository/minecraft-pe-016-0-apk-download-free_GM479516143.pdfIn PDF document text
    • http://www.vetmed.fkh.unair.ac.id/repository/roblox-hack-free-download-pc_GM431946152.pdfIn PDF document text
    • http://www.vetmed.fkh.unair.ac.id/repository/free-coins-and-spins-in-coin-master_GM406889139.pdfIn PDF document text
    • http://www.vetmed.fkh.unair.ac.id/repository/hack-robux-free-pastebin-no-subscribe_GM431946152.pdfIn PDF document text
    • http://www.vetmed.fkh.unair.ac.id/repository/coin-master-free-spins-and-coins-2021_GM406889139.pdfIn PDF document text
    • http://www.vetmed.fkh.unair.ac.id/repository/roblox-hack-scrips_GM431946152.pdfIn PDF document text
    • http://vetmed.fkh.unair.ac.id/repository/how-to-hack-into-someones-roblox-account_GM431946152.pdfIn PDF document text
    • http://www.vetmed.fkh.unair.ac.id/repository/cheat-roblox-tower-battle_GM431946152.pdfIn PDF document text
    • http://www.vetmed.fkh.unair.ac.id/repository/how-to-get-free-premium-roblox_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.

FilenameKindSourceSize
font_00_sfnt_off000032e4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x32E4 23464 bytes
SHA-256: 6a10171a9c18a1b25dc56bd4aa722893673ec51d85580083f7b1d460c1bae02b
font_01_sfnt_off000067c2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x67C2 19544 bytes
SHA-256: 1bdec4d18fe752b9a72ef339b7c099a2967eb0721463151c633912f2260d34e4