Malicious PDF — malware analysis report

Static analysis result for SHA-256 3dd3e86f73cd5143…

MALICIOUS

PDF

35.4 KB Created: 2021-07-06 13:27:10 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-26
MD5: 50c5a9c502d4dd3435cee4f6a9a7bb3a SHA-1: e0e4260bf0782abad6de903acef13789868375f1 SHA-256: 3dd3e86f73cd514320f4935aa1d5d83ba4217b75050432f86fe06cde27a324d2
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/como-hackear-coin-master-2021-game-hack In PDF document text
    • http://akbidprimahusada.ac.id/elibrary/repository/free-spins-coin-master-no-verification_GM406889139.pdfIn PDF document text
    • http://akbidprimahusada.ac.id/elibrary//repository/coin-master-free-coins-and-spins-2021_GM406889139.pdfIn PDF document text
    • http://akbidprimahusada.ac.id/elibrary//repository/code-free-robux_GM431946152.pdfIn PDF document text
    • http://akbidprimahusada.ac.id/elibrary/repository/stinkywinkys-robux-hack_GM431946152.pdfIn PDF document text
    • http://akbidprimahusada.ac.id/elibrary//repository/how-to-get-minecraft-for-free-on-iphone-2021_GM479516143.pdfIn PDF document text
    • http://akbidprimahusada.ac.id/elibrary/repository/free-robux-link-game-by-roblox_GM431946152.pdfIn PDF document text
    • http://akbidprimahusada.ac.id/elibrary//repository/how-to-hack-peoples-roblox-accounts_GM431946152.pdfIn PDF document text
    • https://akbidprimahusada.ac.id/elibrary/repository/how-to-get-robux-in-hack_GM431946152.pdfIn PDF document text
    • https://akbidprimahusada.ac.id/elibrary/repository/roblox-sword-hack_GM431946152.pdfIn PDF document text
    • http://akbidprimahusada.ac.id/elibrary//repository/buy-robux-free_GM431946152.pdfIn PDF document text
    • http://akbidprimahusada.ac.id/elibrary/repository/super-simon-says-hack-roblox-espaol_GM431946152.pdfIn PDF document text
    • https://akbidprimahusada.ac.id/elibrary/repository/how-to-hack-roblox-mobile-with-cydia_GM431946152.pdfIn PDF document text
    • http://akbidprimahusada.ac.id/elibrary//repository/free-roblox-svg_GM431946152.pdfIn PDF document text
    • https://akbidprimahusada.ac.id/elibrary/repository/free-roblox-account-with-robux-2021_GM431946152.pdfIn PDF document text
    • http://akbidprimahusada.ac.id/elibrary//repository/coin-master-spin-hack-trick_GM406889139.pdfIn PDF document text
    • http://akbidprimahusada.ac.id/elibrary/repository/rblx-city-free-robux_GM431946152.pdfIn PDF document text
    • https://akbidprimahusada.ac.id/elibrary/repository/cheats-for-roblox-ios_GM431946152.pdfIn PDF document text
    • http://akbidprimahusada.ac.id/elibrary/repository/natual-survivle-roblox-cheats_GM431946152.pdfIn PDF document text
    • https://akbidprimahusada.ac.id/elibrary/repository/edm-reaper-how-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://akbidprimahusada.ac.id/elibrary/repository/hacks-for-big-paintball-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
stream_002_off00003265.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3265 23096 bytes
SHA-256: 8b8f55fcddcc344a6d2c7784bb9cd4b710c3563d2f00a96f30d03b37e2f8ad74
font_01_sfnt_off00006671.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6671 18664 bytes
SHA-256: edb2623ad104b8b86e5bc1c5ef1b50296b358dc4eff6a16b1f212eab3163f8bc

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