Malicious PDF — malware analysis report

Static analysis result for SHA-256 d35d865eb0d435f8…

MALICIOUS

PDF

47.1 KB Created: 2021-06-08 18:13:23 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-24
MD5: e5d021b1fbc40bb23f88994b7542f6b3 SHA-1: 0c10dc8359ff35134708d8213aa285a638237e64 SHA-256: d35d865eb0d435f8e4e34e90967c8778b3cf8b86c387e5b35a8e809c9b3ad301
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 0.9832

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.tw/app/431946152/how-to-hack-roblox-games-without-cheat-engine-2021-game-hack PDF link annotation
    • http://stikgiamakassar.ac.id/digilib/repository/free-robux-no-verification-2021-ios_GM431946152.pdfIn PDF document text
    • http://stikgiamakassar.ac.id/digilib/repository/coin-master-free-rare-cards_GM406889139.pdfIn PDF document text
    • http://stikgiamakassar.ac.id/digilib/repository/coin-master-mod-free-download_GM406889139.pdfIn PDF document text
    • http://stikgiamakassar.ac.id/digilib/repository/how-to-hack-a-roblox-account-easy_GM431946152.pdfIn PDF document text
    • http://stikgiamakassar.ac.id/digilib/repository/free-coin-master-gift-link_GM406889139.pdfIn PDF document text
    • http://stikgiamakassar.ac.id/digilib/repository/moon-active_GM406889139.pdfIn PDF document text
    • http://stikgiamakassar.ac.id/digilib/repository/rare-free-links-to-coin-master_GM406889139.pdfIn PDF document text
    • http://stikgiamakassar.ac.id/digilib/repository/minecraft-pe-free-ios_GM479516143.pdfIn PDF document text
    • http://stikgiamakassar.ac.id/digilib/repository/robux-hack-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • http://stikgiamakassar.ac.id/digilib/repository/free-coin-master-spins-daily_GM406889139.pdfIn PDF document text
    • http://stikgiamakassar.ac.id/digilib/repository/how-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://stikgiamakassar.ac.id/digilib/repository/how-to-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://stikgiamakassar.ac.id/digilib/repository/real-coin-master-hack-2021_GM406889139.pdfIn PDF document text
    • http://stikgiamakassar.ac.id/digilib/repository/roblox-hack-app_GM431946152.pdfIn PDF document text
    • http://stikgiamakassar.ac.id/digilib/repository/minecraft-free-online_GM479516143.pdfIn PDF document text
    • http://stikgiamakassar.ac.id/digilib/repository/optifine-pe_GM479516143.pdfIn PDF document text
    • http://stikgiamakassar.ac.id/digilib/repository/coin-master-free-soins_GM406889139.pdfIn PDF document text
    • http://stikgiamakassar.ac.id/digilib/repository/coin-master-game-hack-app-download_GM406889139.pdfIn PDF document text
    • http://stikgiamakassar.ac.id/digilib/repository/roblox-free-play_GM431946152.pdfIn PDF document text
    • http://stikgiamakassar.ac.id/digilib/repository/roblox-admin-hack-v3rmillion_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_off000052d5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x52D5 27708 bytes
SHA-256: 56f5bdd1335a71f6efccd7c8baffcf90da1474d3c338ea0045090d03dad3d031
font_01_sfnt_off00009066.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9066 20024 bytes
SHA-256: 25875a4deaeca8818a302ec570db639e749fb777a37cc92d7afc42a135054504

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