Malicious PDF — malware analysis report

Static analysis result for SHA-256 5d8b2ed8dfa6a51d…

MALICIOUS

PDF

34.9 KB Created: 2021-06-28 18:36:50 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-18
MD5: 2854d1b1ae90b0dd3a602bc7dfd31658 SHA-1: c310abc93ccd507d7fe41c3fdf1250fe20cd9d57 SHA-256: 5d8b2ed8dfa6a51d1c3c35ef9c2b1a4250ec7e41a330b16e52a3adaafbff596d
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/roblox-ce-cheat-tables-game-hack In PDF document text
    • http://katalog.stikesmukla.ac.id/repository/free-spins-for-coin-master-app_GM406889139.pdfIn PDF document text
    • http://katalog.stikesmukla.ac.id/repository/free-robux-no-gift-card_GM431946152.pdfIn PDF document text
    • http://katalog.stikesmukla.ac.id/repository/free-robux-generator-no-survey-no-download-no-human-verification_GM431946152.pdfIn PDF document text
    • http://katalog.stikesmukla.ac.id/repository/how-to-get-assasin-vip-for-free-roblox_GM431946152.pdfIn PDF document text
    • http://katalog.stikesmukla.ac.id/repository/free-robux-no-human-verification-2021-youtube_GM431946152.pdfIn PDF document text
    • http://katalog.stikesmukla.ac.id/repository/hackear-roblox-para-tener-robux_GM431946152.pdfIn PDF document text
    • http://katalog.stikesmukla.ac.id/repository/hack-coin-master-spin-android_GM406889139.pdfIn PDF document text
    • http://katalog.stikesmukla.ac.id/repository/free-robux-no-verification-at-all_GM431946152.pdfIn PDF document text
    • http://katalog.stikesmukla.ac.id/repository/coin-master-ids-for-free-spins_GM406889139.pdfIn PDF document text
    • http://katalog.stikesmukla.ac.id/repository/minecraft-logo-maker-free_GM479516143.pdfIn PDF document text
    • http://katalog.stikesmukla.ac.id/repository/minecraft-free-reddit_GM479516143.pdfIn PDF document text
    • http://katalog.stikesmukla.ac.id/repository/show-me-how-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://katalog.stikesmukla.ac.id/repository/how-to-watch-ads-for-free-spins-in-coin-master_GM406889139.pdfIn PDF document text
    • http://katalog.stikesmukla.ac.id/repository/mcpe_GM479516143.pdfIn PDF document text
    • http://katalog.stikesmukla.ac.id/repository/how-to-hack-roblox-may-2021_GM431946152.pdfIn PDF document text
    • http://katalog.stikesmukla.ac.id/repository/how-to-get-free-tokens-in-minecraft-ps4_GM479516143.pdfIn PDF document text
    • http://katalog.stikesmukla.ac.id/repository/roblox-free-executor_GM431946152.pdfIn PDF document text
    • http://katalog.stikesmukla.ac.id/repository/free-robux-no-verification-no-download_GM431946152.pdfIn PDF document text
    • http://katalog.stikesmukla.ac.id/repository/free-spin-coin-master-hack-2021_GM406889139.pdfIn PDF document text
    • http://katalog.stikesmukla.ac.id/repository/why-can-i-not-hack-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_off00003165.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3165 22776 bytes
SHA-256: 3f85120c655f850b44b9f6f4c83f6367f3827dcdd6dca2b3f40451a8bed3b037
font_01_sfnt_off00006440.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6440 18756 bytes
SHA-256: ae35205806c7a47f2f31346c1b8addf28cdfb5f52719e8df77f0a822028e65dc

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