Malicious PDF — malware analysis report

Static analysis result for SHA-256 bf7476eef477e39f…

MALICIOUS

PDF

34.9 KB Created: 2021-07-04 17:55:07 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 163446c16124702122da265d1ef67d8a SHA-1: 7da19f59fa67d51ab26c3b3f9d92193ada47bf0f SHA-256: bf7476eef477e39facbbc876d745dbef58c1ba3748afc7c165953be8ce987bad
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a prominent link disguised as a game hack generator, specifically for 'Coin Master'. This lure is designed to trick users into downloading potentially malicious applications or visiting phishing sites. The ML classifier strongly flagged this PDF as malicious, and the embedded URL points to a known suspicious domain associated with such lures.

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/406889139/coin-master-32-mod-hack-apk-download-game-hack PDF link annotation
    • http://psb.sd-alazhar29.sch.id/repository/roblox-black-t-shirt-free_GM431946152.pdfIn PDF document text
    • http://psb.sd-alazhar29.sch.id/repository/codes-for-skyscraper-tycoon-roblox-that-give-free-robux_GM431946152.pdfIn PDF document text
    • http://psb.sd-alazhar29.sch.id/repository/free-roblox-bot-followers_GM431946152.pdfIn PDF document text
    • http://psb.sd-alazhar29.sch.id/repository/coin-master-free-spins-and-coins-app_GM406889139.pdfIn PDF document text
    • http://psb.sd-alazhar29.sch.id/repository/minecraft-hack-app_GM479516143.pdfIn PDF document text
    • http://psb.sd-alazhar29.sch.id/repository/master-hack-coin_GM406889139.pdfIn PDF document text
    • http://psb.sd-alazhar29.sch.id/repository/free-robux-generator-2021_GM431946152.pdfIn PDF document text
    • http://psb.sd-alazhar29.sch.id/repository/coin-master-free-spins-daily-2021_GM406889139.pdfIn PDF document text
    • http://psb.sd-alazhar29.sch.id/repository/how-to-get-minecraft-for-free-on-pc_GM479516143.pdfIn PDF document text
    • http://psb.sd-alazhar29.sch.id/repository/minecraft-bedrock-server-hosting-free_GM479516143.pdfIn PDF document text
    • http://psb.sd-alazhar29.sch.id/repository/how-to-get-free-bloxburg-money-on-roblox_GM431946152.pdfIn PDF document text
    • http://psb.sd-alazhar29.sch.id/repository/minecraft-modded-client_GM479516143.pdfIn PDF document text
    • http://psb.sd-alazhar29.sch.id/repository/insane-how-to-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • http://psb.sd-alazhar29.sch.id/repository/coin-master-hack-online-generator_GM406889139.pdfIn PDF document text
    • http://psb.sd-alazhar29.sch.id/repository/how-to-hack-roblox-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://psb.sd-alazhar29.sch.id/repository/complete-offers-for-robux_GM431946152.pdfIn PDF document text
    • http://psb.sd-alazhar29.sch.id/repository/free-card-giver-roblox_GM431946152.pdfIn PDF document text
    • http://psb.sd-alazhar29.sch.id/repository/coin-master-free-spins-hack-apk-download_GM406889139.pdfIn PDF document text
    • http://psb.sd-alazhar29.sch.id/repository/minecraft-mobile-free_GM479516143.pdfIn PDF document text
    • http://psb.sd-alazhar29.sch.id/repository/best-roblox-hack-2021_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_off00003029.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3029 22768 bytes
SHA-256: 613860bcbe5d5da2eaec3d1d117ef081132de99e29e2fd1d555e7d9431e3abf7
font_01_sfnt_off0000632f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x632F 19060 bytes
SHA-256: b2f2bdfce970253595c338512fd2a5862cc865fa35bc5292acfe5508f880fc4c

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