Malicious PDF — malware analysis report

Static analysis result for SHA-256 7820ecdc9859de36…

MALICIOUS

PDF

34.2 KB Created: 2021-06-25 22:01:58 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-16
MD5: ad3279baf12376bef78fb8505391c9d1 SHA-1: 3b53a3738f5a25f5f0ffc559a6ebb8db2a306337 SHA-256: 7820ecdc9859de36ad014e7a3a7d1d4199d06f396559af5d35199877d798aa05
220 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 5

  • 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.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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-instantly-easy-game-hack In PDF document text
    • http://pustaka.pasca.unand.ac.id/repository/free-robux-com-real_GM431946152.pdfIn PDF document text
    • http://pustaka.pasca.unand.ac.id/repository/free-cheap-robux_GM431946152.pdfIn PDF document text
    • http://pustaka.pasca.unand.ac.id/repository/how-to-hack-a-roblox-account-2021-easy_GM431946152.pdfIn PDF document text
    • http://pustaka.pasca.unand.ac.id/repository/hacks-para-roblox-sin-ijectores_GM431946152.pdfIn PDF document text
    • http://pustaka.pasca.unand.ac.id/repository/free-robux-games-that-actually-work_GM431946152.pdfIn PDF document text
    • http://pustaka.pasca.unand.ac.id/repository/earnrobux-gg-earn-free-robux-for-roblox_GM431946152.pdfIn PDF document text
    • http://pustaka.pasca.unand.ac.id/repository/free-redeem-code-on-roblox_GM431946152.pdfIn PDF document text
    • http://pustaka.pasca.unand.ac.id/repository/hack-robux-pc_GM431946152.pdfIn PDF document text
    • http://pustaka.pasca.unand.ac.id/repository/free-robux-co_GM431946152.pdfIn PDF document text
    • http://pustaka.pasca.unand.ac.id/repository/cheats-for-murder-mystery-2-roblox_GM431946152.pdfIn PDF document text
    • http://pustaka.pasca.unand.ac.id/repository/free-minecraft-resource-packs_GM479516143.pdfIn PDF document text
    • http://pustaka.pasca.unand.ac.id/repository/get-free-robux-here000webhostapp_GM431946152.pdfIn PDF document text
    • http://pustaka.pasca.unand.ac.id/repository/roblox-someone-hacked-my-account_GM431946152.pdfIn PDF document text
    • http://pustaka.pasca.unand.ac.id/repository/coin-master-free-spin-and-coins-links-2021_GM406889139.pdfIn PDF document text
    • http://pustaka.pasca.unand.ac.id/repository/its-free-real-estate-roblox_GM431946152.pdfIn PDF document text
    • http://pustaka.pasca.unand.ac.id/repository/ich-bin-am-hacken-roblox-name-danny-jesden_GM431946152.pdfIn PDF document text
    • http://pustaka.pasca.unand.ac.id/repository/no-promises-cheat-codes-roblox-id_GM431946152.pdfIn PDF document text
    • http://pustaka.pasca.unand.ac.id/repository/claim-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://pustaka.pasca.unand.ac.id/repository/bux-gg-get-free-robux_GM431946152.pdfIn PDF document text
    • http://pustaka.pasca.unand.ac.id/repository/top-10-best-free-roblox-items_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_off00002fca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2FCA 21972 bytes
SHA-256: fd0de71f3b689e916640b27c01aba77a7cf146d023f0af37cb63c90d3cfab7eb
font_01_sfnt_off00006067.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6067 19108 bytes
SHA-256: f44782033c7f0d59d8ff292cf12766cac7fe5e38dc974db1a89aad3eed2261d8

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