Malicious PDF — malware analysis report

Static analysis result for SHA-256 fab92b76cb4795fe…

MALICIOUS

PDF

42.5 KB Created: 2021-06-04 01:38:34 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 1431f4f47330c24c42ed51b720826129 SHA-1: 663ebbfb6019b13ea5d9204ad336e8fffa7873db SHA-256: fab92b76cb4795fe0cae461c3c4fff14659e9adf34244ac55cb7e544aa03ab6c
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document employs a game hack lure to entice users to click on external links, specifically pointing to 'coin-master-hack-tuts-game-hack'. This behavior is indicative of a phishing or scam attempt, likely leading to further malicious downloads or credential harvesting. The ML classifier strongly supports the malicious nature of this PDF.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9874

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 https://netcdn.online/app/406889139/coin-master-hack-tuts-game-hack PDF link annotation
    • http://pustaka.kebudayaan.kemdikbud.go.id/repository/robux-generator-no-survey_GM431946152.pdfIn PDF document text
    • http://pustaka.kebudayaan.kemdikbud.go.id/repository/free-coins-and-spins_GM406889139.pdfIn PDF document text
    • http://pustaka.kebudayaan.kemdikbud.go.id/repository/links-for-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://pustaka.kebudayaan.kemdikbud.go.id/repository/coin-master-fan-page-facebook_GM406889139.pdfIn PDF document text
    • http://pustaka.kebudayaan.kemdikbud.go.id/repository/blox-fish-free-robux_GM431946152.pdfIn PDF document text
    • http://pustaka.kebudayaan.kemdikbud.go.id/repository/roblox-free-robux-hack_GM431946152.pdfIn PDF document text
    • http://pustaka.kebudayaan.kemdikbud.go.id/repository/coin-master-free-spins-hack-but-no-surveys_GM406889139.pdfIn PDF document text
    • http://pustaka.kebudayaan.kemdikbud.go.id/repository/roblox-fun-robux_GM431946152.pdfIn PDF document text
    • http://pustaka.kebudayaan.kemdikbud.go.id/repository/free-apk-mods-coin-master_GM406889139.pdfIn PDF document text
    • http://pustaka.kebudayaan.kemdikbud.go.id/repository/coin-master-hack-2021-apk_GM406889139.pdfIn PDF document text
    • http://pustaka.kebudayaan.kemdikbud.go.id/repository/play-coin-master-online-free_GM406889139.pdfIn PDF document text
    • http://pustaka.kebudayaan.kemdikbud.go.id/repository/can-you-host-a-minecraft-server-for-free_GM479516143.pdfIn PDF document text
    • http://pustaka.kebudayaan.kemdikbud.go.id/repository/coin-master-hack-co_GM406889139.pdfIn PDF document text
    • http://pustaka.kebudayaan.kemdikbud.go.id/repository/coin-master-free-spins-app_GM406889139.pdfIn PDF document text
    • http://pustaka.kebudayaan.kemdikbud.go.id/repository/free-spin-coin-master-link-2021_GM406889139.pdfIn PDF document text
    • http://pustaka.kebudayaan.kemdikbud.go.id/repository/coin-master-cheats-without-verification_GM406889139.pdfIn PDF document text
    • http://pustaka.kebudayaan.kemdikbud.go.id/repository/coin-master-cheat-apk-free-download_GM406889139.pdfIn PDF document text
    • http://pustaka.kebudayaan.kemdikbud.go.id/repository/coin-master-village-3_GM406889139.pdfIn PDF document text
    • http://pustaka.kebudayaan.kemdikbud.go.id/repository/daily-free-spin-coin-master-link_GM406889139.pdfIn PDF document text
    • http://pustaka.kebudayaan.kemdikbud.go.id/repository/coin-master-hack-without-root_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
stream_004_off00004ea5.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4EA5 23776 bytes
SHA-256: 4c9ebe227548b06c9f7016e1949ebdf4c0b9f2a4dd631290991b3a7e6452e06d
font_01_sfnt_off000084c0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x84C0 17856 bytes
SHA-256: 7ea96389f12658db35895fa26686e9f226c03f756b3b8bcc05ec7a18db0b2f9d

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