Malicious PDF — malware analysis report

Static analysis result for SHA-256 2c0cef65a50aca45…

MALICIOUS

PDF

45.2 KB Created: 2021-05-11 17:02:58 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 68ab3d739765367e4e6be9eb28a73c17 SHA-1: 0bc44f6a6b63f06f8cee40ccd55b10b5d256881b SHA-256: 2c0cef65a50aca45e440f11324a782b81ce3e5f54ecfbb78b8a86febff7628fc
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links and a document body that lures users with promises of game hacks and free currency for Coin Master. The primary link, https://netcdn.xyz/app/406889139/coin-master-free-spins-link-today-game-hack, is flagged as a redirector for game hacks. While no scripts were explicitly extracted, the PDF structure and embedded URIs suggest a malicious intent to redirect users to potentially harmful websites, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9621

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.xyz/app/406889139/coin-master-free-spins-link-today-game-hack PDF link annotation
    • http://librarystkippgribl.com//repository/how-to-get-free-spins-on-coin-master-2021-links_GM406889139.pdfIn PDF document text
    • http://librarystkippgribl.com//repository/minecraft-windows-10-hacks_GM479516143.pdfIn PDF document text
    • http://librarystkippgribl.com//repository/get-free-coin-master-coins_GM406889139.pdfIn PDF document text
    • http://librarystkippgribl.com/repository/minecraft-bedrock-free_GM479516143.pdfIn PDF document text
    • http://librarystkippgribl.com/repository/coin-master-spin-cheat_GM406889139.pdfIn PDF document text
    • http://librarystkippgribl.com//repository/free-coin-master-spins-blog_GM406889139.pdfIn PDF document text
    • http://librarystkippgribl.com//repository/coin-master-hack-spins-apk-download_GM406889139.pdfIn PDF document text
    • http://librarystkippgribl.com/repository/coin-master-hack-xyz-2021_GM406889139.pdfIn PDF document text
    • http://librarystkippgribl.com/repository/free-spins-coin-master-unlimited_GM406889139.pdfIn PDF document text
    • http://librarystkippgribl.com/repository/op-rewards-robux_GM431946152.pdfIn PDF document text
    • http://librarystkippgribl.com/repository/coin-master-free-spins-link-facebook-page_GM406889139.pdfIn PDF document text
    • http://librarystkippgribl.com/repository/free-robux-not-fake_GM431946152.pdfIn PDF document text
    • http://librarystkippgribl.com/repository/coin-master-hack-with-facebook-login_GM406889139.pdfIn PDF document text
    • http://librarystkippgribl.com//repository/get-free-gold-cards-in-coin-master_GM406889139.pdfIn PDF document text
    • http://librarystkippgribl.com/repository/coin-master-pet-food-hack_GM406889139.pdfIn PDF document text
    • http://librarystkippgribl.com//repository/roblox-fun-com-free-robux_GM431946152.pdfIn PDF document text
    • http://librarystkippgribl.com//repository/freecoins_GM406889139.pdfIn PDF document text
    • http://librarystkippgribl.com/repository/daily-coin-master-free_GM406889139.pdfIn PDF document text
    • http://librarystkippgribl.com/repository/coin-master-free-spins-link-whatsapp-group_GM406889139.pdfIn PDF document text
    • http://librarystkippgribl.com//repository/robux-hack-generator_GM431946152.pdfIn 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_003_off00004b18.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4B18 24840 bytes
SHA-256: f7c58e17dd5c42bfc147b471da3d82a52efd72e4304c54e57c6841af56345f3d
font_01_sfnt_off000083b1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x83B1 2880 bytes
SHA-256: 10d025f04f706eb71cdda4f99784df1b9ccb52e48080e43095e0398eaef6f132
font_02_sfnt_off00008d9b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8D9B 18412 bytes
SHA-256: ee277532c3187caf3da016130e4cbd3fee848ac0b1174d0f40fc16c12ed3c41d

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