Malicious PDF — malware analysis report

Static analysis result for SHA-256 eec1138359150c7b…

MALICIOUS

PDF

35.1 KB Created: 2021-07-04 23:47:12 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 483b3d26c7a124291068844c78183cda SHA-1: 5e01b7a09222da0ffe88be0345207b0beed1b65e SHA-256: eec1138359150c7b5d5121e46e473b11de4ebaddd2be0a7e393803e8d1b80da3
82 Risk Score

Malware Insights

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

The PDF document contains numerous links to external websites, many of which are hosted on domains related to game hacks and free in-game currency. The primary lure appears to be related to 'Coin Master' and 'Roblox', suggesting a social engineering tactic to trick users into visiting potentially malicious sites. While no scripts were explicitly extracted, the PDF structure and embedded links strongly indicate a phishing or scam attempt.

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.tw/app/406889139/how-to-create-group-in-coin-master-free-spins-game-hack PDF link annotation
    • http://libnh.stikesnh.ac.id/repository/how-do-you-get-free-robux-without-paying_GM431946152.pdfIn PDF document text
    • http://libnh.stikesnh.ac.id/repository/how-to-earn-robux-on-roblox_GM431946152.pdfIn PDF document text
    • http://libnh.stikesnh.ac.id/repository/minecraft-hacks-ps4_GM479516143.pdfIn PDF document text
    • http://libnh.stikesnh.ac.id/repository/lastrick-com-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://libnh.stikesnh.ac.id/repository/roblox-free-admin-how-spawn-overseer_GM431946152.pdfIn PDF document text
    • http://libnh.stikesnh.ac.id/repository/roblox-robux_GM431946152.pdfIn PDF document text
    • http://libnh.stikesnh.ac.id/repository/dragon-adventures-hack-roblox_GM431946152.pdfIn PDF document text
    • http://libnh.stikesnh.ac.id/repository/roblox-free-username-changer_GM431946152.pdfIn PDF document text
    • http://libnh.stikesnh.ac.id/repository/roblox-www-com_GM431946152.pdfIn PDF document text
    • http://libnh.stikesnh.ac.id/repository/roblox-insta-arrest-hack-jailbreak-pastespin_GM431946152.pdfIn PDF document text
    • http://libnh.stikesnh.ac.id/repository/free-robux-no-human-verification-or-survey-2021_GM431946152.pdfIn PDF document text
    • http://libnh.stikesnh.ac.id/repository/coin-master-free-spins-link-download-today_GM406889139.pdfIn PDF document text
    • http://libnh.stikesnh.ac.id/repository/free-robux-codes_GM431946152.pdfIn PDF document text
    • http://libnh.stikesnh.ac.id/repository/coin-master-hack-coins_GM406889139.pdfIn PDF document text
    • http://libnh.stikesnh.ac.id/repository/coin-master-spins-hack_GM406889139.pdfIn PDF document text
    • http://libnh.stikesnh.ac.id/repository/robuxy-com-free-robux_GM431946152.pdfIn PDF document text
    • http://libnh.stikesnh.ac.id/repository/static-moonactive-net-link_GM406889139.pdfIn PDF document text
    • http://libnh.stikesnh.ac.id/repository/roblox-high-school-life-hack_GM431946152.pdfIn PDF document text
    • http://libnh.stikesnh.ac.id/repository/roblox-chaotic-neutral-hack_GM431946152.pdfIn PDF document text
    • http://libnh.stikesnh.ac.id/repository/what-games-give-you-robux_GM431946152.pdfIn PDF document text
    • https://www.urcouponsdeal.com/2019/03/coin-master-free-spin-and-coin-links.htmlIn 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
stream_002_off00003330.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3330 22676 bytes
SHA-256: 83b0580760c3f124c33af7b14d9447453205df900dccfe8fa2a3c8c69a0f6fc0
font_01_sfnt_off000065e7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x65E7 18480 bytes
SHA-256: ae0f5ee35ade10f7a62e6d06929c5e0e04e9c689c9567e6b8441a297d9ba33b3

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