Malicious PDF — malware analysis report

Static analysis result for SHA-256 b097b606ab645977…

MALICIOUS

PDF

33.8 KB Created: 2021-07-04 08:46:18 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: f7c805ee8bbdafa7b5b2e241a9bc70f4 SHA-1: bdc832a295e8ff1dcb5e398a78cec6b5d6b152ae SHA-256: b097b606ab645977d371d1bde47e72edf2227f26a7f2b13bec4a939f280caa42
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a lure of free game currency and hacks to trick users into clicking a link. The primary link, http://netcdn.tw/app/431946152/giftrobux-com-generator-game-hack, is likely to lead to a malicious download or phishing page. While no scripts were explicitly extracted, the PDF structure and embedded URLs suggest a social engineering attack aimed at initial compromise.

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/431946152/giftrobux-com-generator-game-hack PDF link annotation
    • http://e-library.smkn1jombang.sch.id/repository/coin-master-free-spin-and-coin_GM406889139.pdfIn PDF document text
    • http://e-library.smkn1jombang.sch.id/repository/boku-no-roblox-working-hack-script_GM431946152.pdfIn PDF document text
    • http://e-library.smkn1jombang.sch.id/repository/roblox-rare-accounts-free_GM431946152.pdfIn PDF document text
    • http://e-library.smkn1jombang.sch.id/repository/free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://e-library.smkn1jombang.sch.id/repository/free-minecraft-skin-packs_GM479516143.pdfIn PDF document text
    • http://e-library.smkn1jombang.sch.id/repository/free-robux-generator-for-roblox-2021_GM431946152.pdfIn PDF document text
    • http://e-library.smkn1jombang.sch.id/repository/how-to-get-minecraft-bedrock-for-free_GM479516143.pdfIn PDF document text
    • http://e-library.smkn1jombang.sch.id/repository/coin-master-35-2-hack_GM406889139.pdfIn PDF document text
    • http://e-library.smkn1jombang.sch.id/repository/coin-master-hack-ios-apk_GM406889139.pdfIn PDF document text
    • http://e-library.smkn1jombang.sch.id/repository/free-hacks-for-coin-master_GM406889139.pdfIn PDF document text
    • http://e-library.smkn1jombang.sch.id/repository/coin-master-free-spins-only_GM406889139.pdfIn PDF document text
    • http://e-library.smkn1jombang.sch.id/repository/coinmaster-rewards_GM406889139.pdfIn PDF document text
    • http://e-library.smkn1jombang.sch.id/repository/coin-master-free-spin-link-app_GM406889139.pdfIn PDF document text
    • http://e-library.smkn1jombang.sch.id/repository/how-to-earn-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • http://e-library.smkn1jombang.sch.id/repository/free-roblox-accounts-generator_GM431946152.pdfIn PDF document text
    • http://e-library.smkn1jombang.sch.id/repository/pubg-uc-free-hack_GM1330123889.pdfIn PDF document text
    • http://e-library.smkn1jombang.sch.id/repository/how-to-hack-coin-master-using-es-filer_GM406889139.pdfIn PDF document text
    • http://e-library.smkn1jombang.sch.id/repository/master-coin-hack-mod_GM406889139.pdfIn PDF document text
    • http://e-library.smkn1jombang.sch.id/repository/free-2021-robux_GM431946152.pdfIn PDF document text
    • http://e-library.smkn1jombang.sch.id/repository/card-hack-for-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_off00002ed7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2ED7 21872 bytes
SHA-256: 1bf2bda18091ebdefbd455a419ca9037b17f6e8a530c935b53aea3bd85afbb85
font_01_sfnt_off00005f37.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F37 19036 bytes
SHA-256: 1141fcc85140b9719a6fea4718e7899b0e457e07d9cf7403d9a46b5858d368cb

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