Malicious PDF — malware analysis report

Static analysis result for SHA-256 64b509debb1f917c…

MALICIOUS

PDF

41.7 KB Created: 2021-05-15 08:02:59 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 701f28cfcc56eacb939b6983bda2d386 SHA-1: e8b26e0466862fd1eaf304dfe51d78a1e33cdfcf SHA-256: 64b509debb1f917c61c831c4925d6caf1afa493d422bfab6754d61c62787e649
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 0.9971

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/real-coin-master-hack-game-hack PDF link annotation
    • http://gamardelli.com.br/images/ckfinder/files/robloxmatchcom-free-robux_GM431946152.pdfIn PDF document text
    • http://gamardelli.com.br/images/ckfinder/files/how-to-get-free-roebucks_GM431946152.pdfIn PDF document text
    • http://gamardelli.com.br/images/ckfinder/files/free-robux-com-roblox_GM431946152.pdfIn PDF document text
    • http://gamardelli.com.br/images/ckfinder/files/coin-master-spins-and-coins_GM406889139.pdfIn PDF document text
    • http://gamardelli.com.br/images/ckfinder/files/give-me-robux_GM431946152.pdfIn PDF document text
    • http://gamardelli.com.br/images/ckfinder/files/free-robux-generator-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • http://gamardelli.com.br/images/ckfinder/files/roblox-com-hack_GM431946152.pdfIn PDF document text
    • http://gamardelli.com.br/images/ckfinder/files/how-to-get-free-robux-on-pc_GM431946152.pdfIn PDF document text
    • http://gamardelli.com.br/images/ckfinder/files/google-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://gamardelli.com.br/images/ckfinder/files/minecraft-free-minecoins_GM479516143.pdfIn PDF document text
    • http://gamardelli.com.br/images/ckfinder/files/coin-master-heaven-free-spins-link-2021-today_GM406889139.pdfIn PDF document text
    • http://gamardelli.com.br/images/ckfinder/files/free-robux-with-no-survey_GM431946152.pdfIn PDF document text
    • http://gamardelli.com.br/images/ckfinder/files/how-to-hack-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://gamardelli.com.br/images/ckfinder/files/best-minecraft-hacked-client_GM479516143.pdfIn PDF document text
    • http://gamardelli.com.br/images/ckfinder/files/coin-free-master_GM406889139.pdfIn PDF document text
    • http://gamardelli.com.br/images/ckfinder/files/mcpe-hacks_GM479516143.pdfIn PDF document text
    • http://gamardelli.com.br/images/ckfinder/files/coin-master-free-spins-and-coins-today-gift-reward_GM406889139.pdfIn PDF document text
    • http://gamardelli.com.br/images/ckfinder/files/how-to-get-free-robux-by-playing-games_GM431946152.pdfIn PDF document text
    • http://gamardelli.com.br/images/ckfinder/files/coin-mast-hacks_GM406889139.pdfIn PDF document text
    • http://gamardelli.com.br/images/ckfinder/files/free-robux-just-enter-username-and-password_GM431946152.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
stream_003_off000049b8.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x49B8 24568 bytes
SHA-256: 69db30209bee1c6711b6e2013013fdd208334217155abf9d040dee8ad0cce607
font_01_sfnt_off000081fd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x81FD 17788 bytes
SHA-256: c971b34c329d205054a16b1b5f827a74783bca0f841d374511d085dfea161b8f

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