Malicious PDF — malware analysis report

Static analysis result for SHA-256 2b692406eb69bf44…

MALICIOUS

PDF

45.9 KB Created: 2021-06-07 08:36:18 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-17
MD5: 8dfed2dcda667661e6fb23abc2bebe5f SHA-1: 16ebe47bb3d6337c1c929bdedb9f09e4dfc80a9c SHA-256: 2b692406eb69bf441a2dd1f8fb43ed47871cc42a512dddb98734fe1cd583d97a
160 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9864

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 https://netcdn.tw/app/431946152/how-do-you-get-free-robux-easy-way-game-hack In PDF document text
    • https://perpus.upp.ac.id/digilib/repository/free-robux-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • https://perpus.upp.ac.id/digilib/repository/roblox-hacks-com_GM431946152.pdfIn PDF document text
    • https://perpus.upp.ac.id/digilib/repository/is-there-any-way-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://perpus.upp.ac.id/digilib/repository/roblox-hack-game_GM431946152.pdfIn PDF document text
    • https://perpus.upp.ac.id/digilib/repository/coin-master-free-daily-spins_GM406889139.pdfIn PDF document text
    • https://perpus.upp.ac.id/digilib/repository/free-minecraft-printables_GM479516143.pdfIn PDF document text
    • https://perpus.upp.ac.id/digilib/repository/give-free-robux_GM431946152.pdfIn PDF document text
    • https://perpus.upp.ac.id/digilib/repository/tryrbx-site-free-robux_GM431946152.pdfIn PDF document text
    • https://perpus.upp.ac.id/digilib/repository/minecraft-realms-free_GM479516143.pdfIn PDF document text
    • https://perpus.upp.ac.id/digilib/repository/coin-master-free-coins-hack_GM406889139.pdfIn PDF document text
    • https://perpus.upp.ac.id/digilib/repository/get-free-robux-no-human-verification_GM431946152.pdfIn PDF document text
    • https://perpus.upp.ac.id/digilib/repository/make-free-robux_GM431946152.pdfIn PDF document text
    • https://perpus.upp.ac.id/digilib/repository/how-to-get-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • https://perpus.upp.ac.id/digilib/repository/free-roblox-clothes-boy_GM431946152.pdfIn PDF document text
    • https://perpus.upp.ac.id/digilib/repository/free-robux-no-verification-no-download-2021_GM431946152.pdfIn PDF document text
    • https://perpus.upp.ac.id/digilib/repository/links-for-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • https://perpus.upp.ac.id/digilib/repository/coin-master-invite-friends-hack_GM406889139.pdfIn PDF document text
    • https://perpus.upp.ac.id/digilib/repository/free-minecraft-worlds_GM479516143.pdfIn PDF document text
    • https://perpus.upp.ac.id/digilib/repository/how-to-get-free-robux-codes_GM431946152.pdfIn PDF document text
    • https://perpus.upp.ac.id/digilib/repository/free-robux-no-human-verification-or-survey-2021_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_004_off0000506d.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x506D 26456 bytes
SHA-256: d89b1d61da4319c57ee62efff46291e70c95e773916a9c3237e4d6b7f780a29c
font_01_sfnt_off00008dd4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8DD4 19220 bytes
SHA-256: 320f6cde274576380c9727536c99234491988982d6dbf93ef40e2cee5541bcf2

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