Malicious PDF — malware analysis report

Static analysis result for SHA-256 66be210195a4f6e2…

MALICIOUS

PDF

34.6 KB Created: 2021-06-25 12:35:17 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 014a455076c896dc2208a0086f5fdeef SHA-1: ab371d0daa59bbaf39e1d67b7a66357472c0ab65 SHA-256: 66be210195a4f6e24f7a162756e8ffaa07d9817749327965d46f0c8bf3cf4e4c
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains embedded links that redirect to malicious infrastructure, specifically promoting 'game hacks' and 'free generators' for popular games. The heuristic firings confirm these links lead to known malicious redirectors. The document body and extracted URLs suggest a phishing or scam attempt to trick users into visiting potentially harmful sites, likely to download further malware or steal credentials.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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/comment-hacker-roblox-game-hack In PDF document text
    • https://alpha.westernston.com/wp-content/uploads/fsqm-files/promotion-code-for-free-robux_GM431946152.pdfIn PDF document text
    • https://alpha.westernston.com/wp-content/uploads/fsqm-files/how-to-hack-roblox-with-inspect-element-2021_GM431946152.pdfIn PDF document text
    • https://alpha.westernston.com/wp-content/uploads/fsqm-files/someone-hacked-into-my-roblox-account_GM431946152.pdfIn PDF document text
    • https://alpha.westernston.com/wp-content/uploads/fsqm-files/how-to-get-free-robux-1-step_GM431946152.pdfIn PDF document text
    • https://alpha.westernston.com/wp-content/uploads/fsqm-files/coin-master-free-spins-link-today-new_GM406889139.pdfIn PDF document text
    • https://alpha.westernston.com/wp-content/uploads/fsqm-files/top-10-free-items-in-roblox_GM431946152.pdfIn PDF document text
    • https://alpha.westernston.com/wp-content/uploads/fsqm-files/free-minecraft-accounts-2021_GM479516143.pdfIn PDF document text
    • https://alpha.westernston.com/wp-content/uploads/fsqm-files/free-fe-roblox-script_GM431946152.pdfIn PDF document text
    • https://alpha.westernston.com/wp-content/uploads/fsqm-files/roblox-robux-hack-free-generator_GM431946152.pdfIn PDF document text
    • https://alpha.westernston.com/wp-content/uploads/fsqm-files/course-obstacle-2021-roblox-cheat_GM431946152.pdfIn PDF document text
    • https://alpha.westernston.com/wp-content/uploads/fsqm-files/minecraft-free-online-games_GM479516143.pdfIn PDF document text
    • https://alpha.westernston.com/wp-content/uploads/fsqm-files/gamesyourday-free-robux_GM431946152.pdfIn PDF document text
    • https://alpha.westernston.com/wp-content/uploads/fsqm-files/robux-2021-free_GM431946152.pdfIn PDF document text
    • https://alpha.westernston.com/wp-content/uploads/fsqm-files/hack-para-roblox-robux-gratis-2021_GM431946152.pdfIn PDF document text
    • https://alpha.westernston.com/wp-content/uploads/fsqm-files/www-roblox-hack-free-robux_GM431946152.pdfIn PDF document text
    • https://alpha.westernston.com/wp-content/uploads/fsqm-files/minecraft-mac-free_GM479516143.pdfIn PDF document text
    • https://alpha.westernston.com/wp-content/uploads/fsqm-files/roblox-shinobi-life-cheat-engine-spins_GM431946152.pdfIn PDF document text
    • https://alpha.westernston.com/wp-content/uploads/fsqm-files/how-to-hack-someone-on-roblox_GM431946152.pdfIn PDF document text
    • https://alpha.westernston.com/wp-content/uploads/fsqm-files/free-robux-no-verification-no-download-no-survey-2021_GM431946152.pdfIn PDF document text
    • https://alpha.westernston.com/wp-content/uploads/fsqm-files/no-generator-free-robux_GM431946152.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_off000030e3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x30E3 22184 bytes
SHA-256: b83b2e8e443ab16a1e5943ff6562f15a83e78d9010a602bbfb0e58c1a26d64da
font_01_sfnt_off00006221.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6221 19020 bytes
SHA-256: 08ca425d72d757ea21cd37986752ba42a2c251875acf5abb2fa61a6e76e1ecad

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