Malicious PDF — malware analysis report

Static analysis result for SHA-256 37700513341b9f14…

MALICIOUS

PDF

33.6 KB Created: 2021-07-09 09:28:15 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: ece3187f74b369c7a6912442b9f50d93 SHA-1: 0ed1a3d5ae27234591b049e23019d90c6ff52379 SHA-256: 37700513341b9f14b2fac2debf569525cea9e7d048bb1bdb084a08f8154aefb7
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a lure for 'free spins' and 'game hacks', directing users to a malicious URL. The ML classifier strongly flagged this PDF as malicious, and the presence of external URIs and a download button lure further support this assessment. The document's content and embedded links suggest it is designed to trick users into visiting potentially harmful websites.

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/free-spins-on-coin-master-game-hack PDF link annotation
    • http://razredna-nastava.net/files/get-me-free-robux_GM431946152.pdfIn PDF document text
    • http://razredna-nastava.net/files/free-robux-gift-card-pins_GM431946152.pdfIn PDF document text
    • http://razredna-nastava.net/files/coin-master-35-13-hack-download_GM406889139.pdfIn PDF document text
    • http://razredna-nastava.net/files/can-you-get-free-tiktok-followers_GM835599320.pdfIn PDF document text
    • http://razredna-nastava.net/files/how-to-make-free-robux_GM431946152.pdfIn PDF document text
    • http://razredna-nastava.net/files/robux-free-online_GM431946152.pdfIn PDF document text
    • http://razredna-nastava.net/files/how-to-hack-into-roblox-and-get-robux_GM431946152.pdfIn PDF document text
    • http://razredna-nastava.net/files/minecraft-windows-10-edition-free-download_GM479516143.pdfIn PDF document text
    • http://razredna-nastava.net/files/roblox-scripting-free-help_GM431946152.pdfIn PDF document text
    • http://razredna-nastava.net/files/free-roblox-followers_GM431946152.pdfIn PDF document text
    • https://razredna-nastava.net/files/roblox-raf-free_GM431946152.pdfIn PDF document text
    • http://razredna-nastava.net/files/how-do-you-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://razredna-nastava.net/files/free-minecraft-education-edition_GM479516143.pdfIn PDF document text
    • http://razredna-nastava.net/files/minecraft-multiplayer-free_GM479516143.pdfIn PDF document text
    • http://razredna-nastava.net/files/how-to-get-hacks-on-roblox_GM431946152.pdfIn PDF document text
    • http://razredna-nastava.net/files/coin-master-hacks-that-actually-work_GM406889139.pdfIn PDF document text
    • http://razredna-nastava.net/files/smart-lodhi-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://razredna-nastava.net/files/free-tiktok-likes-trial_GM835599320.pdfIn PDF document text
    • https://razredna-nastava.net/files/how-to-get-free-robux-on-chromebook_GM431946152.pdfIn PDF document text
    • http://razredna-nastava.net/files/minecraft-java-code-free_GM479516143.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_off00002e73.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2E73 22556 bytes
SHA-256: d4f4a5a85f99253fd422d0510792d021036677ad0cf75fdf644bf3f90f8a0396
font_01_sfnt_off000060d6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x60D6 18176 bytes
SHA-256: 1d97d559b00188de25375047baff616ad70156a7868f4dca1def947dc1a2c5ee

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