Malicious PDF — malware analysis report

Static analysis result for SHA-256 72bff65ab994ea68…

MALICIOUS

PDF

34.9 KB Created: 2021-06-27 09:21:35 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-28
MD5: b21bfc23f4f2d6c5876c1d0f4906a987 SHA-1: d9cd3972d1ff1edb12dd9488b77b3c03e6eff8e2 SHA-256: 72bff65ab994ea68320e0a5de2e7a3992662b945973df0a157edb051e8da97d5
160 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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 http://netcdn.co/app/431946152/how-to-get-free-robux-2021-january-game-hack In PDF document text
    • http://library.itekes-bali.ac.id/repository/free-goahead-london-roblox-buses_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/minecraft-pocket-edition-mods-for-free_GM479516143.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/google-how-do-you-get-free-robux_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/free-spins-coin-master-links_GM406889139.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/minecraft-hacks-wurst_GM479516143.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/roblox-hack-robux-youtube_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/roblox-dynamic-ship-sim-2-cheat_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/free-robux-generator-for-kids_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/robux-for-offers_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/coin-master-free-spins-2021-haktuts_GM406889139.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/coin-master-free-cards_GM406889139.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/free-robux-works-no-surveys-no-human-verification-code_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/roblox-admin-hack_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/promo-codes-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/bloxburg-roblox-money-hack_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/free-makeu-base-roblox_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/coin-master-spin-cheat_GM406889139.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/free-account-roblox-2021_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/free-roblox-gift-card-codes-2021_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/free-spins-from-coin-master_GM406889139.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_off00003005.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3005 22224 bytes
SHA-256: 31b9f806ad8db8f2a2fed21cb91f33a0b5ce6ea3f71a6d40730c0afd0f909d02
font_01_sfnt_off0000611b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x611B 19732 bytes
SHA-256: 251708cf0be36389ed866608bceeb37ea8b53f289d946ae963a3a34aca5957d6