Malicious PDF — malware analysis report

Static analysis result for SHA-256 83b7f145dc1ea1e0…

MALICIOUS

PDF

33.9 KB Created: 2021-07-03 12:52:06 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 37f8997de7fd507a71441230a91d5974 SHA-1: 4fd9c4cd9845b483961936549654bedf27365f17 SHA-256: 83b7f145dc1ea1e0e3ef5486e32bfc29002458df73b5af00d9f56bebd7c559e5
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a lure related to game hacks and free spins, directing users to a known malicious redirector. The document body and heuristics indicate a social engineering tactic to trick users into visiting malicious websites. While no scripts were explicitly extracted, the PDF structure and embedded URLs suggest an attempt to lead the user to download potentially malicious content or further compromise.

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.tw/app/406889139/coin-master-free-spins-haktuts-game-hack In PDF document text
    • http://library.ft.upnvj.ac.id/repository/master-hack-coin_GM406889139.pdfIn PDF document text
    • http://library.ft.upnvj.ac.id/repository/roblox-script-hack-epic-minigames_GM431946152.pdfIn PDF document text
    • http://library.ft.upnvj.ac.id/repository/free-coin-and-spin-for-coin-master_GM406889139.pdfIn PDF document text
    • http://library.ft.upnvj.ac.id/repository/roblox-login-hack_GM431946152.pdfIn PDF document text
    • http://library.ft.upnvj.ac.id/repository/free-draw-2-roblox_GM431946152.pdfIn PDF document text
    • http://library.ft.upnvj.ac.id/repository/free-bling-bling-card-coin-master_GM406889139.pdfIn PDF document text
    • http://library.ft.upnvj.ac.id/repository/how-to-get-gold-cards-on-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://library.ft.upnvj.ac.id/repository/roblox-free-online-game_GM431946152.pdfIn PDF document text
    • http://library.ft.upnvj.ac.id/repository/minecraft-build-hacks_GM479516143.pdfIn PDF document text
    • http://library.ft.upnvj.ac.id/repository/how-to-instantly-get-free-robux-in-roblox-oprewards_GM431946152.pdfIn PDF document text
    • http://library.ft.upnvj.ac.id/repository/how-to-get-hacks-on-minecraft_GM479516143.pdfIn PDF document text
    • http://library.ft.upnvj.ac.id/repository/coin-master-free-spin-link-app_GM406889139.pdfIn PDF document text
    • http://library.ft.upnvj.ac.id/repository/how-to-get-creative-mode-in-minecraft-server-hack_GM479516143.pdfIn PDF document text
    • http://library.ft.upnvj.ac.id/repository/synapse-roblox-free-download_GM431946152.pdfIn PDF document text
    • http://library.ft.upnvj.ac.id/repository/descargar-coin-master-hackeado_GM406889139.pdfIn PDF document text
    • http://library.ft.upnvj.ac.id/repository/i-will-hack-and-kill-you-parent-roblox-group_GM431946152.pdfIn PDF document text
    • http://library.ft.upnvj.ac.id/repository/easy-ways-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://library.ft.upnvj.ac.id/repository/gamepass-for-free-roblox_GM431946152.pdfIn PDF document text
    • http://library.ft.upnvj.ac.id/repository/coin-master-daily-spin-link-app_GM406889139.pdfIn PDF document text
    • http://library.ft.upnvj.ac.id/repository/btools-hack-roblox-jailbreak-download_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_off00002ecd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2ECD 22536 bytes
SHA-256: fdbc375d6a4a0745cf00913ebea8d1e80451ab8104d77c2783a1ec657cfa86c4
font_01_sfnt_off00006115.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6115 18484 bytes
SHA-256: f4f9ad1f9ed7968e2344e2d1f3b165ae8c607e70d6a002aee90d609eb2aca606

Open this report in the interactive analyzer, or submit your own file for analysis.