Malicious PDF — malware analysis report

Static analysis result for SHA-256 dd7677bf5daca2ef…

MALICIOUS

PDF

34.3 KB Created: 2021-07-04 11:45:46 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 24a2fcab47d6a24172c06396232854b4 SHA-1: 58d2c2105c9838426072942107dd9c6ab4950b62 SHA-256: dd7677bf5daca2efe3b0931ec7618dd63cecce736a81f45442b4e3d5f727fe70
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/406889139/www-coin-master-game-hack PDF link annotation
    • http://perpus.masda.ac.id//repository/tiradas-coin-master_GM406889139.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/how-to-get-free-robux-with-out-hacking_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/2021-robux-profe-fro-free_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/free-robux-5-ways_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id//repository/minecraft-skins-download-free_GM479516143.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/free-coin-master-hacks-no-verification_GM406889139.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/roblox-hack-download-pc_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/free-robux-uncopylocked_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/how-to-get-free-food-for-foxy-in-coin-master_GM406889139.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/tryrbx-site-free-robux_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/cheat-cashed-roblox_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/pubg-uc-carding-in-pakistan_GM1330123889.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/download-coin-master-free-spins-link-2021-today_GM406889139.pdfIn PDF document text
    • http://perpus.masda.ac.id//repository/free-mojang-account-with-minecraft_GM479516143.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/free-spins-on-coin-master-cheat_GM406889139.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/coin-master-hack-ios-download_GM406889139.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/is-free-robux-real_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/coin-master-free-400-spin-link_GM406889139.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/coin-master-free-spins-haktuts_GM406889139.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/coin-master-free-stuff-links_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
font_00_sfnt_off000030c4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x30C4 22720 bytes
SHA-256: 78fc8051b358aea53da9e6f0f3a0944f8099ced82f557dd0a724c694482fdb84
font_01_sfnt_off00006391.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6391 18196 bytes
SHA-256: 333f0b57c489d8d6b1bb73d529d6ed6b87f332327f9dda85c3e6bdc5eefbc894

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