Malicious PDF — malware analysis report

Static analysis result for SHA-256 7af6974cd6dfe477…

MALICIOUS

PDF

42.3 KB Created: 2021-05-03 12:35:19 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-17
MD5: c36b13c25a3ef9c02fd489174fb1a8bf SHA-1: 8e68c17515231fde308cf69595e519b58cebdc53 SHA-256: 7af6974cd6dfe477e27d5c9f8d1afd13d2504530e663f975b665933510d08db3
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a high-confidence heuristic indicating it links to a game hack redirector, specifically targeting Roblox users. The embedded URL leads to a site offering 'free models' and 'hacks', which is a common lure for phishing or malware distribution. While no scripts were extracted, the document's structure and linked URLs strongly suggest it's designed to trick users into visiting a malicious site, likely to download further malware or engage in credential theft.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9941

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/431946152/how-to-get-free-models-in-roblox-studios-game-hack PDF link annotation
    • https://lib-stie.yai.ac.id/repository/free-emotes-in-roblox.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/free-galaxy-shirt-roblox.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/cheat-in-roblox-gold-venture.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/free-backpacks-roblox.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/rbxoffers-earn-free-roblox.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/free-roblox-chat-bypass.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/robux-hack-2021-free-robux-generator.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/prisonbreak16-hack-script-roblox.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/free-items-for-kids-on-roblox.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/how-to-add-robux-with-cheat-engine.pdfIn 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_003_off00004559.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4559 27264 bytes
SHA-256: c8cdc8f05db42d3cf19b9face0a09f54169abd2d946ad5d761cae18a337d1761
font_01_sfnt_off000081ef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x81EF 18844 bytes
SHA-256: 77e954b04c843b0dd1b6f5afdd7fadd6fd1935666818795127d24a6927049c0d

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