Malicious PDF — malware analysis report

Static analysis result for SHA-256 3ddd518a0fee4a29…

MALICIOUS

PDF

49.7 KB Created: 2021-06-10 22:27:28 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-26
MD5: f52771a45eb39aa7c09479542c4386a2 SHA-1: df352fb4e293d9a795231fd9cc9e2ce512e6442e SHA-256: 3ddd518a0fee4a294d89ddf1499cc311315b172d0dae4eb87c98c55e9e029fa3
160 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9796

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/cheat-roblox-2021-game-hack In PDF document text
    • http://www.library.smactf.sch.id/repository/roblox-promo-codes-free-robux_GM431946152.pdfIn PDF document text
    • http://www.library.smactf.sch.id/repository/coin-master_GM406889139.pdfIn PDF document text
    • http://www.library.smactf.sch.id/repository/get-me-robux-for-free_GM431946152.pdfIn PDF document text
    • http://www.library.smactf.sch.id/repository/coin-master-cheats-for-free-spins_GM406889139.pdfIn PDF document text
    • http://www.library.smactf.sch.id/repository/free-robux-com_GM431946152.pdfIn PDF document text
    • http://www.library.smactf.sch.id/repository/free-roblox-hack_GM431946152.pdfIn PDF document text
    • http://www.library.smactf.sch.id/repository/how-to-get-free-robux-easy-no-download_GM431946152.pdfIn PDF document text
    • http://www.library.smactf.sch.id/repository/free-robux-that-actually-works_GM431946152.pdfIn PDF document text
    • http://www.library.smactf.sch.id/repository/robloxmatchcom-free-robux_GM431946152.pdfIn PDF document text
    • http://www.library.smactf.sch.id/repository/ariana-grande-break-free-msuic-video-set-roblox_GM431946152.pdfIn PDF document text
    • http://www.library.smactf.sch.id/repository/robux-hack-2021-d_GM431946152.pdfIn PDF document text
    • http://www.library.smactf.sch.id/repository/unlimited-robux_GM431946152.pdfIn PDF document text
    • http://www.library.smactf.sch.id/repository/how-to-get-free-robux-2021-easy_GM431946152.pdfIn PDF document text
    • http://www.library.smactf.sch.id/repository/coin-master-hack-apk_GM406889139.pdfIn PDF document text
    • http://www.library.smactf.sch.id/repository/coin-master-free-spins-hack-download_GM406889139.pdfIn PDF document text
    • http://www.library.smactf.sch.id/repository/free-gucci-roblox_GM431946152.pdfIn PDF document text
    • http://www.library.smactf.sch.id/repository/free-robux-generator-2021-no-human-verification-or-survey_GM431946152.pdfIn PDF document text
    • http://www.library.smactf.sch.id/repository/free-robux-with-no-verification_GM431946152.pdfIn PDF document text
    • http://www.library.smactf.sch.id/repository/haktuts-coin-master-free-spin-link_GM406889139.pdfIn PDF document text
    • http://www.library.smactf.sch.id/repository/free-spins-in-coin-master-without-human-verification_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off0000542c.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x542C 26892 bytes
SHA-256: 2e3061e5fe38b84014403e90346ebe81e5aa4919a5076d4f867f61df11c50510
font_01_sfnt_off000093bd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x93BD 3012 bytes
SHA-256: 909440ce645f97863996478acacfe27306b62e531eef3214c4e7acc452fe3528
font_02_sfnt_off00009e37.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9E37 18684 bytes
SHA-256: ff64d0c7bc6c94860378b54262deeaa286babfd8c603c2f3358ffb08229f6d42