Malicious PDF — malware analysis report

Static analysis result for SHA-256 793ad818fc067214…

MALICIOUS

PDF

35.2 KB Created: 2021-07-04 05:54:39 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-14
MD5: 80b2b9a20bf0ac490ecd19839e1dbc9a SHA-1: 6dcf946173b39901e23984ee63d309a6b4ae9d12 SHA-256: 793ad818fc0672146c6e3d17f14f9d2867e86a3d3a1d3b69914296ba39830d81
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.tw/app/406889139/coin-master-hack-xyz-download-free-game-hack In PDF document text
    • https://www.serraw.com/uploaded_files/userfiles/files/hacks-de-roblox-sin-virus_GM431946152.pdfIn PDF document text
    • https://www.serraw.com/uploaded_files/userfiles/files/coin-master-tiradas-gratis-link_GM406889139.pdfIn PDF document text
    • https://www.serraw.com/uploaded_files/userfiles/files/free-robux-offer-earning-sites_GM431946152.pdfIn PDF document text
    • https://www.serraw.com/uploaded_files/userfiles/files/how-to-get-free-robux-2021-no-human-verification_GM431946152.pdfIn PDF document text
    • https://www.serraw.com/uploaded_files/userfiles/files/free-minecraft-svg-cutting-files_GM479516143.pdfIn PDF document text
    • https://www.serraw.com/uploaded_files/userfiles/files/game-pass-roblox-free_GM431946152.pdfIn PDF document text
    • https://www.serraw.com/uploaded_files/userfiles/files/youtube-roblox-how-get-free-animation_GM431946152.pdfIn PDF document text
    • https://www.serraw.com/uploaded_files/userfiles/files/how-to-hack-roblox-to-get-robux_GM431946152.pdfIn PDF document text
    • https://www.serraw.com/uploaded_files/userfiles/files/how-to-get-free-robux-inspect_GM431946152.pdfIn PDF document text
    • https://www.serraw.com/uploaded_files/userfiles/files/roblox-dll-hack-scripts_GM431946152.pdfIn PDF document text
    • https://www.serraw.com/uploaded_files/userfiles/files/how-to-become-a-real-roblox-hacker_GM431946152.pdfIn PDF document text
    • https://www.serraw.com/uploaded_files/userfiles/files/roblox-moderators_GM431946152.pdfIn PDF document text
    • https://www.serraw.com/uploaded_files/userfiles/files/how-to-make-a-free-server-in-minecraft-java_GM479516143.pdfIn PDF document text
    • https://www.serraw.com/uploaded_files/userfiles/files/gear-hack-roblox-building_GM431946152.pdfIn PDF document text
    • https://www.serraw.com/uploaded_files/userfiles/files/coin-master-free-spins-link-today_GM406889139.pdfIn PDF document text
    • https://www.serraw.com/uploaded_files/userfiles/files/free-robux-codes-2021_GM431946152.pdfIn PDF document text
    • https://www.serraw.com/uploaded_files/userfiles/files/free-code-robux-2021_GM431946152.pdfIn PDF document text
    • https://www.serraw.com/uploaded_files/userfiles/files/free-spins-and-coins-coin-master-2021-link_GM406889139.pdfIn PDF document text
    • https://www.serraw.com/uploaded_files/userfiles/files/hack-anyones-roblox-account-2021_GM431946152.pdfIn PDF document text
    • https://www.serraw.com/uploaded_files/userfiles/files/roblox-fun-robux_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_off000030f5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x30F5 22840 bytes
SHA-256: cea824c5e0bc5e248ff504e97e7605d57cc04bc42eb5ec1e5e2ea6ca71358467
font_01_sfnt_off00006424.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6424 19236 bytes
SHA-256: 40a95bac7efeedd056b1a9645696afbc74576a07b4b2fccba56c2b98aaafc7f4

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