Malicious PDF — malware analysis report

Static analysis result for SHA-256 f40253f04159064d…

MALICIOUS

PDF

33.9 KB Created: 2021-07-03 13:23:52 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-18
MD5: d72d1cb1e5c0307fa554c75ab5a0a88d SHA-1: a988c87145ceab16f5f6ee4f7ed8c672f78c95ae SHA-256: f40253f04159064dee9bb60e9c270042491a22647965bb05a78fb05bf5b8bfe6
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/479516143/how-to-get-minecraft-for-free-on-ps4-2021-game-hack PDF link annotation
    • http://daskrimti-jabar.web.id/library/repository/do-coin-master-hacks-work_GM406889139.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library/repository/free-robux-generator-club_GM431946152.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library//repository/cute-free-roblox-clothes_GM431946152.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library/repository/coin-master-free-spin-daily-bonus_GM406889139.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library//repository/how-to-make-a-server-in-minecraft-java-for-free_GM479516143.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library/repository/minecraft-mod-menu_GM479516143.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library//repository/how-to-get-free-robux-easy_GM431946152.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library//repository/minecraft-pe-texture-packs-free-download_GM479516143.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library/repository/coin-master-free-coins-and-spins_GM406889139.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library/repository/minecraft-hacks-wurst_GM479516143.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library/repository/roblox-hack-ga_GM431946152.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library/repository/coin-master-game-hack-apk_GM406889139.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library/repository/hack-coin-master-2021-pc_GM406889139.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library/repository/how-to-get-free-stuff-on-roblox-2021-mobile_GM431946152.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library/repository/roblox-cheat-bubble-gum_GM431946152.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library//repository/coin-master-hacks-for-gold-cards_GM406889139.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library/repository/roblox-free-vip-server-hoster_GM431946152.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library/repository/how-to-enter-fake-details-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library/repository/free-robux-hacks-no-verification_GM431946152.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library//repository/get-free-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_off0000315c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x315C 21600 bytes
SHA-256: 6a3c9165b119495fe71dba9ef1a5a434f9bdb26561ca58520c1ec9b578692fe9
font_01_sfnt_off00006022.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6022 18780 bytes
SHA-256: 964d1fb9400f960a4cca4e8384455b66185ba37a3e819774d43ec3ca069c6c77

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