Malicious PDF — malware analysis report

Static analysis result for SHA-256 78ffab4805bb5ef5…

MALICIOUS

PDF

33.7 KB Created: 2021-07-03 16:14:01 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 121cb03af1a204582ac55882ff3d01af SHA-1: 42c0bbe402300be0acc15e2d8f91b25f62782eea SHA-256: 78ffab4805bb5ef5c7561fe725ca068bf54accd6fe7b1d051315fc0c16577776
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. The file routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector high 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.
  • 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
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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/835599320/how-to-get-tiktok-famous-free-game-hack PDF link annotation
    • http://digilib.pustaka.unand.ac.id/repository/roblox-download-pc-free_GM431946152.pdfIn PDF document text
    • http://digilib.pustaka.unand.ac.id/repository/hack-roblox-accounts-2021_GM431946152.pdfIn PDF document text
    • http://digilib.pustaka.unand.ac.id/repository/roblox-parkour-hack-script-pastebin_GM431946152.pdfIn PDF document text
    • http://digilib.pustaka.unand.ac.id/repository/generation-for-free-robux_GM431946152.pdfIn PDF document text
    • http://digilib.pustaka.unand.ac.id/repository/free-modded-minecraft-server-hosting_GM479516143.pdfIn PDF document text
    • http://digilib.pustaka.unand.ac.id/repository/minecraft-pe-free-ios_GM479516143.pdfIn PDF document text
    • http://digilib.pustaka.unand.ac.id/repository/did-my-roblox-get-hacked_GM431946152.pdfIn PDF document text
    • http://digilib.pustaka.unand.ac.id/repository/free-robux-pastebin-code_GM431946152.pdfIn PDF document text
    • http://digilib.pustaka.unand.ac.id/repository/case-clicker-money-hack-roblox_GM431946152.pdfIn PDF document text
    • http://digilib.pustaka.unand.ac.id/repository/roblox-free-stuff-hack-2021_GM431946152.pdfIn PDF document text
    • http://digilib.pustaka.unand.ac.id/repository/free-robux-giveaway-live_GM431946152.pdfIn PDF document text
    • http://digilib.pustaka.unand.ac.id/repository/roblox-hack-nopde-engine-2021_GM431946152.pdfIn PDF document text
    • http://digilib.pustaka.unand.ac.id/repository/free-draw-game-roblox_GM431946152.pdfIn PDF document text
    • http://digilib.pustaka.unand.ac.id/repository/how-to-teleport-using-cheat-engine-roblox_GM431946152.pdfIn PDF document text
    • http://digilib.pustaka.unand.ac.id/repository/zeus-roblox-hack_GM431946152.pdfIn PDF document text
    • http://digilib.pustaka.unand.ac.id/repository/roblox-wall-hacks-2021_GM431946152.pdfIn PDF document text
    • http://digilib.pustaka.unand.ac.id/repository/robloxedit-avaater-cheatcom_GM431946152.pdfIn PDF document text
    • http://digilib.pustaka.unand.ac.id/repository/roblox-afk-saber-simulator-hack_GM431946152.pdfIn PDF document text
    • http://digilib.pustaka.unand.ac.id/repository/how-do-you-hack-people-on-roblox-assassin_GM431946152.pdfIn PDF document text
    • http://digilib.pustaka.unand.ac.id/repository/commande-cheat-synapse-roblox_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_off0000314f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x314F 21488 bytes
SHA-256: 7ee1eab7e72dd2e08ee2aa7b383faba3ec0bc834c4b19edbb07d182c514f376d
font_01_sfnt_off00006044.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6044 18536 bytes
SHA-256: bb1c92c15c6f7e928bb0bf9e48269c0987e64c88e905b9eb553ca97d913e1119

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