Malicious PDF — malware analysis report

Static analysis result for SHA-256 f2ee83979d6d58d7…

MALICIOUS

PDF

33.9 KB Created: 2021-07-05 03:58:02 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-24
MD5: 28f6d28f5ec136ebe78ab2d373e69fdb SHA-1: aa1b79edb3dd8e021aec2384dc355c169bdc6727 SHA-256: f2ee83979d6d58d7e7b183cdb589bc4c73e7634d0b1cc8071452d0a77dcdb5e7
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/free-minecraft-java-code-game-hack PDF link annotation
    • http://pustaka.smpmuh2yk.sch.id//repository/free-robux-ad_GM431946152.pdfIn PDF document text
    • http://pustaka.smpmuh2yk.sch.id/repository/free-bypass-songs-roblox_GM431946152.pdfIn PDF document text
    • http://pustaka.smpmuh2yk.sch.id//repository/microsoft-free-robux_GM431946152.pdfIn PDF document text
    • http://pustaka.smpmuh2yk.sch.id//repository/tiktok-for-free-textbooks_GM835599320.pdfIn PDF document text
    • http://pustaka.smpmuh2yk.sch.id//repository/coin-master-cheats-2021_GM406889139.pdfIn PDF document text
    • http://pustaka.smpmuh2yk.sch.id/repository/robux-hack-me_GM431946152.pdfIn PDF document text
    • http://pustaka.smpmuh2yk.sch.id/repository/free-spins-and-coins-coin-master-2021-link_GM406889139.pdfIn PDF document text
    • http://pustaka.smpmuh2yk.sch.id/repository/minecraft-mod-menu_GM479516143.pdfIn PDF document text
    • http://pustaka.smpmuh2yk.sch.id//repository/huskybuscom-free-robux_GM431946152.pdfIn PDF document text
    • http://pustaka.smpmuh2yk.sch.id/repository/coin-master-free-spins-link_GM406889139.pdfIn PDF document text
    • http://pustaka.smpmuh2yk.sch.id/repository/free-robux-gift-card-codes_GM431946152.pdfIn PDF document text
    • http://pustaka.smpmuh2yk.sch.id/repository/hack-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://pustaka.smpmuh2yk.sch.id/repository/free-spins-and-coins-coin-master-links_GM406889139.pdfIn PDF document text
    • http://pustaka.smpmuh2yk.sch.id/repository/free-spins-coin-master-unlimited_GM406889139.pdfIn PDF document text
    • http://pustaka.smpmuh2yk.sch.id/repository/roblox-assassin_GM431946152.pdfIn PDF document text
    • http://pustaka.smpmuh2yk.sch.id/repository/coin-master-online-hack-generator_GM406889139.pdfIn PDF document text
    • http://pustaka.smpmuh2yk.sch.id/repository/plug-toolbox-for-minecraft-free-ios_GM479516143.pdfIn PDF document text
    • http://pustaka.smpmuh2yk.sch.id/repository/coin-master-village-cost_GM406889139.pdfIn PDF document text
    • http://pustaka.smpmuh2yk.sch.id//repository/hack-coin-master-apk-33_GM406889139.pdfIn PDF document text
    • http://pustaka.smpmuh2yk.sch.id/repository/optifine-mcpe_GM479516143.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_off000031cf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x31CF 21612 bytes
SHA-256: 0109ba84dbc3b5a2f930b2695b693b99580eb2e4d8f1fe7ecd1f82b60399ceb8
font_01_sfnt_off00006133.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6133 18452 bytes
SHA-256: 5311ff163cb5fa31e0ff5346c8b8368b0c4116a432924275301f829a2985271a

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