Malicious PDF — malware analysis report

Static analysis result for SHA-256 03f3ba79772611e5…

MALICIOUS

PDF

33.0 KB Created: 2021-06-29 01:29:51 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: fde293eb9f5e75733aab8b3a11d31060 SHA-1: 266fb5b4cc1ba39007497b52963ce511756a7f34 SHA-256: 03f3ba79772611e5fa58dc3561016c4690bcb708556cf066c758b2ca0baddc50
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to known malicious redirectors, specifically advertising free Robux and game hacks. The ML classifier also flagged this PDF as malicious with high confidence. The primary lure appears to be a 'free generator / game hack' which redirects users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9824

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector critical 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. CRITICAL on its own: the /app/<id>/<slug>-game-hack path shape is unambiguous scam infra, and the host rotates so a host-list match can't be relied on.
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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
  • 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.co/app/431946152/free-robux-codes-handy-game-hack In PDF document text
    • http://www.furuihp.com/Public/upload/editorfiles/free-minecraft-skins-xbox-one_GM479516143.pdfIn PDF document text
    • http://www.furuihp.com/Public/upload/editorfiles/www-free-robux_GM431946152.pdfIn PDF document text
    • http://www.furuihp.com/Public/upload/editorfiles/coin-master-coin-link_GM406889139.pdfIn PDF document text
    • http://www.furuihp.com/Public/upload/editorfiles/free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://www.furuihp.com/Public/upload/editorfiles/minecraft-free-computer-game_GM479516143.pdfIn PDF document text
    • http://www.furuihp.com/Public/upload/editorfiles/rbxoffers-com-free-robux_GM431946152.pdfIn PDF document text
    • http://www.furuihp.com/Public/upload/editorfiles/roblox-hair-for-free_GM431946152.pdfIn PDF document text
    • http://www.furuihp.com/Public/upload/editorfiles/free-robux-com-2021_GM431946152.pdfIn PDF document text
    • http://www.furuihp.com/Public/upload/editorfiles/how-to-get-robux-easy_GM431946152.pdfIn PDF document text
    • http://www.furuihp.com/Public/upload/editorfiles/coin-master-spin-link-today_GM406889139.pdfIn PDF document text
    • http://www.furuihp.com/Public/upload/editorfiles/robux-generator_GM431946152.pdfIn PDF document text
    • http://www.furuihp.com/Public/upload/editorfiles/hack-coin-master-for-free_GM406889139.pdfIn PDF document text
    • http://www.furuihp.com/Public/upload/editorfiles/coin-master-free-daily-spins-link_GM406889139.pdfIn PDF document text
    • http://www.furuihp.com/Public/upload/editorfiles/how-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://www.furuihp.com/Public/upload/editorfiles/minecraft-building-hacks_GM479516143.pdfIn PDF document text
    • http://www.furuihp.com/Public/upload/editorfiles/coin-master-free-spins-link-download_GM406889139.pdfIn PDF document text
    • http://www.furuihp.com/Public/upload/editorfiles/how-to-hack-people-in-roblox_GM431946152.pdfIn PDF document text
    • http://www.furuihp.com/Public/upload/editorfiles/robux-hack-inspect-element_GM431946152.pdfIn PDF document text
    • http://www.furuihp.com/Public/upload/editorfiles/how-can-you-get-free-robux_GM431946152.pdfIn PDF document text
    • http://www.furuihp.com/Public/upload/editorfiles/tiktok-free-package-dialog_GM835599320.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
font_00_sfnt_off00002a98.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2A98 22304 bytes
SHA-256: 5f88d4fefcc802a55e0b39004063e2334ca7afe75f7eecc1c57c5cc4ff4c19aa
font_01_sfnt_off00005c03.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5C03 19072 bytes
SHA-256: bd690d0e2cd3ef608904135891fa75bb6d95cde51d2f8d4b503b4b70225575fd

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