Malicious PDF — malware analysis report

Static analysis result for SHA-256 b0c3b782919a0c57…

MALICIOUS

PDF

35.8 KB Created: 2021-06-30 03:47:51 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 97eafadc58bede8302c564b3c4b2f97c SHA-1: 5d6d82101472a1ef735e2a5bc3f1e8fee34ecfb7 SHA-256: b0c3b782919a0c57a2b30b920cf55bd7141ae46ec9589e51a733fb6f60d158a7
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF document uses a lure of 'free exploits' and 'game hacks' for popular games like Roblox to entice users. It contains multiple embedded URLs, with the primary one pointing to a suspicious domain that likely hosts malicious content or redirects to further stages of an attack. The ML classifier strongly flagged this PDF as malicious, supporting the conclusion that it is part of a phishing or malware distribution scheme.

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.co/app/431946152/free-exploits-website-downloads-roblox-2021-game-hack PDF link annotation
    • http://lib.fisipumt.ac.id//repository/coin-master-free-gold_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/how-to-hack-roblox_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/how-to-get-hacks-on-roblox_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/can-lucky-patcher-hack-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/roblox-hack-me-robux_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/cruise-ship-tycoon-hack-roblox_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/free-model-death-star-map-roblox_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/how-to-get-free-faces-on-roblox_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/blogspot-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/free-robux-acces-code_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/free-robux-for-kids_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/nike-store-tycoon-roblox-hack-script_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/free-coin-master-spins-for-today_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/those-of-us-who-remain-cheats-roblox_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/www-rubux_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/games-like-roblox-online-free_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/hack-coin-master-apk-358_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/pubg-uc-visa-card_GM1330123889.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/roblox-cheat-indetectable_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/coin-master-free-spins-and-coins-for-iphone_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003137.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3137 22552 bytes
SHA-256: 6cba3c89722b64bab271e3db10f14baedd2cd3f1c1304e0caf78e2affc9d7ba5
font_01_sfnt_off00006357.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6357 20156 bytes
SHA-256: 92f5c44656bb59d156f8cbab56493263657dfd4cc6962260455d819d0280d100

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