Malicious PDF — malware analysis report

Static analysis result for SHA-256 b46dd0c0f1728a3a…

MALICIOUS

PDF

34.9 KB Created: 2021-07-06 06:27:38 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: aca650958141432aa3f141a887e1bd1a SHA-1: ea416b6cda38e6fe66d88adad646f5b70527c9e1 SHA-256: b46dd0c0f1728a3a73ec1ea61807e3e0d6793bf156b0e73f2d15a33302795b6d
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a lure for free game items, specifically referencing Roblox and Coin Master, directing users to a URL associated with game hacks. The ML classifier and PDF URI heuristics strongly indicate malicious intent. While no scripts were extracted, the embedded URLs and the nature of the lure suggest the document is designed to lead the user to a potentially harmful site, likely for credential harvesting or malware delivery.

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/how-to-get-free-roblox-premium-game-hack PDF link annotation
    • http://library.smpn2-byl.sch.id//repository/coin-master-hack-apk-july-2021_GM406889139.pdfIn PDF document text
    • http://library.smpn2-byl.sch.id/repository/roblox-tower-battles-hacked_GM431946152.pdfIn PDF document text
    • http://library.smpn2-byl.sch.id/repository/get-free-roblox-hats_GM431946152.pdfIn PDF document text
    • http://library.smpn2-byl.sch.id/repository/free-robux-scams_GM431946152.pdfIn PDF document text
    • http://library.smpn2-byl.sch.id//repository/free-robux-no-apps_GM431946152.pdfIn PDF document text
    • http://library.smpn2-byl.sch.id//repository/coin-master-free-spin-today_GM406889139.pdfIn PDF document text
    • http://library.smpn2-byl.sch.id//repository/how-to-get-free-robux-2021-no-human-verification_GM431946152.pdfIn PDF document text
    • http://library.smpn2-byl.sch.id//repository/free-robux-hack-us_GM431946152.pdfIn PDF document text
    • http://library.smpn2-byl.sch.id//repository/free-role-in-coin-master_GM406889139.pdfIn PDF document text
    • http://library.smpn2-byl.sch.id//repository/tryrbx-site-free-robux_GM431946152.pdfIn PDF document text
    • http://library.smpn2-byl.sch.id//repository/free-100-robux_GM431946152.pdfIn PDF document text
    • http://library.smpn2-byl.sch.id//repository/earn-robux-online_GM431946152.pdfIn PDF document text
    • http://library.smpn2-byl.sch.id//repository/coin-master-daily-free-spins-link-today_GM406889139.pdfIn PDF document text
    • http://library.smpn2-byl.sch.id//repository/coin-master-download_GM406889139.pdfIn PDF document text
    • http://library.smpn2-byl.sch.id//repository/how-to-get-free-robux-easy-no-download_GM431946152.pdfIn PDF document text
    • http://library.smpn2-byl.sch.id//repository/free-minecraft-realms-to-join_GM479516143.pdfIn PDF document text
    • http://library.smpn2-byl.sch.id//repository/free-robux-websites-that-work_GM431946152.pdfIn PDF document text
    • http://library.smpn2-byl.sch.id//repository/hack-client_GM479516143.pdfIn PDF document text
    • http://library.smpn2-byl.sch.id/repository/free-robux-cards-that-havent-been-used-yet_GM431946152.pdfIn PDF document text
    • http://library.smpn2-byl.sch.id//repository/games-on-roblox-that-give-you-free-robux_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_off00002f5e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F5E 22584 bytes
SHA-256: 1bcea5eb2a3043b4d8899649047bed93af5a8bdf861f9c8f793732b6b627460a
font_01_sfnt_off000061d7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x61D7 19592 bytes
SHA-256: 8b1b51e6228fdc9650fa24152b1b7f272427408116855cfdbd7c3d0194f83bbd

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