Malicious PDF — malware analysis report

Static analysis result for SHA-256 8a50147cc9a10ce6…

MALICIOUS

PDF

45.9 KB Created: 2021-06-03 09:53:10 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-05
MD5: fa389906c480b30eeb42ad9d1b097429 SHA-1: ee704980fac352e7fbf2d09ab6672411fccbdb49 SHA-256: 8a50147cc9a10ce6d18298cfadd2deb990944328ec96bdef2c586e17b7b16831
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains embedded links that redirect to a URL advertising a "free generator / game hack". This lure is a common tactic to trick users into visiting malicious sites, likely to download further malware or engage in credential harvesting. The ML classifier also strongly indicated maliciousness.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9797

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/free-spins-coin-master-ios-2021-game-hack PDF link annotation
    • http://lib.stimykpn.ac.id//repository/free-robux-hack_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/coin-master-spin-hack-trick_GM406889139.pdfIn PDF document text
    • http://lib.stimykpn.ac.id//repository/rewardex-robux_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/coin-master-free-spins-daily-link-game-mod_GM406889139.pdfIn PDF document text
    • http://lib.stimykpn.ac.id//repository/coin-master-server-hack_GM406889139.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/coin-master-35-13-hack-download_GM406889139.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/coin-master-mod-apk-latest-version-free-download_GM406889139.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/roblox-gift-card-for-free_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/avatar-de-roblox_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/coin-master-hacking-news_GM406889139.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/how-to-get-a-free-minecraft-server_GM479516143.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/hack-para-simon-says-roblox_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id//repository/free-coin-and-spin-in-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/coin-master-hack-injection_GM406889139.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/coin-master-free-spins-link-download_GM406889139.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/roblox-cheat-codes_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id//repository/minecraft-launcher-download-free_GM479516143.pdfIn PDF document text
    • http://lib.stimykpn.ac.id//repository/25-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/robux-free-com_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/coin-master-hack-software_GM406889139.pdfIn PDF document text
    • https://coinmasterspinandcoin.comIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off00004ea2.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4EA2 24356 bytes
SHA-256: 6423caa70ae1db2c506844e9f540f2f5effedbcae3caf9b87ec0df6408cc59c7
font_01_sfnt_off00008681.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8681 2880 bytes
SHA-256: ade0b7cf4b51a8340bab06c0d2bef9a9667a97d8224eb14abb50da9e1aaabd55
font_02_sfnt_off0000906d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x906D 18288 bytes
SHA-256: 33dea10a5a633473ad7171de371eb5bee55008ca682d385727c80e9101e9f1e4

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