Malicious PDF — malware analysis report

Static analysis result for SHA-256 0fa9cc85c96a9085…

MALICIOUS

PDF

46.7 KB Created: 2021-06-03 09:07:48 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 62b5f2ac78b3af2de800504e52b0c448 SHA-1: 1aa224bb9c43c6b28b25c493d070849c5dc6ba74 SHA-256: 0fa9cc85c96a90852141786fdd92f97fd2ee403d86899137b8bb40c96c273c28
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.online/app/431946152/roblox-speed-hack-game-hack PDF link annotation
    • http://pustaka.keperawatan.unand.ac.id/repository/android-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://pustaka.keperawatan.unand.ac.id/repository/hacker-coin-master_GM406889139.pdfIn PDF document text
    • http://pustaka.keperawatan.unand.ac.id/repository/hack-coin-master-without-verification_GM406889139.pdfIn PDF document text
    • http://pustaka.keperawatan.unand.ac.id/repository/free-robux-codes-2021-real_GM431946152.pdfIn PDF document text
    • http://pustaka.keperawatan.unand.ac.id/repository/minecraft-coins-free_GM479516143.pdfIn PDF document text
    • http://pustaka.keperawatan.unand.ac.id/repository/coin-master-links-for-today_GM406889139.pdfIn PDF document text
    • http://pustaka.keperawatan.unand.ac.id/repository/master-coin-hack-mod_GM406889139.pdfIn PDF document text
    • http://pustaka.keperawatan.unand.ac.id/repository/hacks-para-roblox_GM431946152.pdfIn PDF document text
    • http://pustaka.keperawatan.unand.ac.id/repository/free-coin-master-spins-and-coins_GM406889139.pdfIn PDF document text
    • http://pustaka.keperawatan.unand.ac.id/repository/how-to-make-free-robux_GM431946152.pdfIn PDF document text
    • http://pustaka.keperawatan.unand.ac.id/repository/free-robux-no-verification_GM431946152.pdfIn PDF document text
    • http://pustaka.keperawatan.unand.ac.id/repository/free-robux-pastebin_GM431946152.pdfIn PDF document text
    • http://pustaka.keperawatan.unand.ac.id/repository/how-you-get-free-robux_GM431946152.pdfIn PDF document text
    • http://pustaka.keperawatan.unand.ac.id/repository/how-to-hack-roblox-accounts-2021_GM431946152.pdfIn PDF document text
    • http://pustaka.keperawatan.unand.ac.id/repository/roblox-dominus-free_GM431946152.pdfIn PDF document text
    • http://pustaka.keperawatan.unand.ac.id/repository/roblox-arsenal-hack-script-pastebin_GM431946152.pdfIn PDF document text
    • http://pustaka.keperawatan.unand.ac.id/repository/roblox-play-now-for-free_GM431946152.pdfIn PDF document text
    • http://pustaka.keperawatan.unand.ac.id/repository/free-robux-codes-2021_GM431946152.pdfIn PDF document text
    • http://pustaka.keperawatan.unand.ac.id/repository/mobihack-net-roblox-hack_GM431946152.pdfIn PDF document text
    • http://pustaka.keperawatan.unand.ac.id/repository/pokemon-go-free-pokeballs-no-human-verification_GM1094591345.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_off00005201.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5201 28904 bytes
SHA-256: 6a043dfdd73b7cfb0bce79c423c7e7909a9938c16782f463d1ceb74e300fcee5
font_01_sfnt_off0000934b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x934B 18532 bytes
SHA-256: ecd25e1cae784267f5a646f1b70b1ce742945d3ce40e95dc5b3aacf46c412aa4

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