Malicious PDF — malware analysis report

Static analysis result for SHA-256 1ba8ff62487a0dfd…

MALICIOUS

PDF

37.9 KB Created: 2021-06-27 15:33:37 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-24
MD5: d6db2018000cd14794469d0bd0739197 SHA-1: f5310a232c29a5eb109edf595e294774472c7d92 SHA-256: 1ba8ff62487a0dfd17d4b36c541f3851c0584fa7e12564b5eb37e30c63b2bc4b
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

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 0.9985

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.co/app/431946152/costume-free-roblox-game-hack PDF link annotation
    • http://perpus.masda.ac.id/repository/how-to-hack-in-roblox-prison-life_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/moon-active_GM406889139.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/como-hackear-coin-master-en-espaol_GM406889139.pdfIn PDF document text
    • http://perpus.masda.ac.id//repository/free-robux-only-1-step_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/how-how-to-cheat-on-roblox-pc_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/online-coin-master-hack-here_GM406889139.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/freespinandcoinblogspotcom-2021-11-coinmasterfreespinandcoinlinkshtml_GM406889139.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/android-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://perpus.masda.ac.id//repository/best-free-coin-master-spins_GM406889139.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/free-money-and-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/best-free-robux-websites-with-no-surveys_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/stylish-animation-pack-roblox-free_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/wwwroblox-hack-get-free-robux_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/how-to-get-free-coins-in-minecraft_GM479516143.pdfIn PDF document text
    • http://perpus.masda.ac.id//repository/moonactive-free-spins-2021_GM406889139.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/free-robux_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/are-there-any-codes-to-earn-free-robux_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/free-spin-app-coin-master_GM406889139.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/roblox-hack-for-fly_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/roblox-ww2-cheats_GM431946152.pdfIn PDF document text
    • https://www.roblox.com/.IIn 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_off00003b23.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3B23 23160 bytes
SHA-256: 1b0d86e4ebd3c66b48202cf6e6c36a24842f98c6c8b255082af56723be39c373
font_01_sfnt_off00006f32.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6F32 19152 bytes
SHA-256: 19e4d81e72f31a317798733e559936b984200a115d9b25d67768535c18f27231

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