Malicious PDF — malware analysis report

Static analysis result for SHA-256 8384dc969383f669…

MALICIOUS

PDF

34.0 KB Created: 2021-07-03 20:21:22 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-02
MD5: b93cbda5f94a38a301cc990f715e5e7c SHA-1: b4040043b8ca742d2ff2b549378bb9f694fe20c4 SHA-256: 8384dc969383f66904e56e65bcf906beb49f0dced0aeccb751c3758ebb3c513a
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/best-free-minecraft-hacked-client-game-hack PDF link annotation
    • http://pustaka1.unindra.id/repository/free-robux-website_GM431946152.pdfIn PDF document text
    • http://pustaka1.unindra.id/repository/coin-master-free-spins-coins_GM406889139.pdfIn PDF document text
    • http://pustaka1.unindra.id/repository/free-daily-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://pustaka1.unindra.id/repository/minecraft-pe-apk-download_GM479516143.pdfIn PDF document text
    • http://pustaka1.unindra.id/repository/roblox-hack-scripts-2021_GM431946152.pdfIn PDF document text
    • http://pustaka1.unindra.id/repository/free-robux-generator-no-scams_GM431946152.pdfIn PDF document text
    • http://pustaka1.unindra.id/repository/roblox-vampire-hunters-2-going-through-walls-hack_GM431946152.pdfIn PDF document text
    • http://pustaka1.unindra.id/repository/coin-master-free-spins-and-coins-daily_GM406889139.pdfIn PDF document text
    • http://pustaka1.unindra.id/repository/coin-master-official-fan-page_GM406889139.pdfIn PDF document text
    • http://pustaka1.unindra.id/repository/minecraft-116-free_GM479516143.pdfIn PDF document text
    • http://pustaka1.unindra.id/repository/free-spin-link-for-coin-master_GM406889139.pdfIn PDF document text
    • http://pustaka1.unindra.id/repository/free-robux-no-human-verification-or-survey-2021_GM431946152.pdfIn PDF document text
    • http://pustaka1.unindra.id/repository/roblox-com-hack_GM431946152.pdfIn PDF document text
    • http://pustaka1.unindra.id/repository/how-to-get-free-robux-on-phone-2021_GM431946152.pdfIn PDF document text
    • http://pustaka1.unindra.id/repository/jailbreak-script_GM431946152.pdfIn PDF document text
    • http://pustaka1.unindra.id/repository/coin-master-apk-hacked-3526_GM406889139.pdfIn PDF document text
    • http://pustaka1.unindra.id/repository/coin-master-free-spin-link-today-2021_GM406889139.pdfIn PDF document text
    • http://pustaka1.unindra.id/repository/how-to-download-minecraft-for-free-on-windows_GM479516143.pdfIn PDF document text
    • http://pustaka1.unindra.id/repository/free-coins-coin-master-today_GM406889139.pdfIn PDF document text
    • http://pustaka1.unindra.id/repository/tiktok-free-overlays_GM835599320.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_off00003064.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3064 22260 bytes
SHA-256: d8c1b5640f63045ef17eddf43b9a1ac5edf6d0368c9ce54454712a4c3b8e672b
font_01_sfnt_off000061d6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x61D6 18492 bytes
SHA-256: de6dea86fd6d9d2ae37ee86cd92174b2735422e57a595b8bae0417e8dfd3f9d4

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