Malicious PDF — malware analysis report

Static analysis result for SHA-256 9d079c62c85e5663…

MALICIOUS

PDF

40.8 KB Created: 2021-05-13 00:03:49 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: df6a911f3f97766b0a4a7529b9c8f29f SHA-1: ba62db59c0bb0933f2da7ba121db760c4fab9499 SHA-256: 9d079c62c85e5663d20a15a15f288be567f74795b3432b13f4edb33215f3ebb9
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to known malicious redirectors, specifically advertising free game hacks and currency. The primary lure is for 'Roblox Studio Free Robux', directing users to `https://netcdn.xyz/app/431946152/roblox-studio-free-robux-game-hack`. While no scripts were explicitly extracted, the PDF structure and embedded URLs strongly indicate a phishing or scam attempt designed to lead users to potentially harmful websites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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 https://netcdn.xyz/app/431946152/roblox-studio-free-robux-game-hack In PDF document text
    • http://interokna-kuban.ru/images/roblox-hack-site_GM431946152.pdfIn PDF document text
    • http://interokna-kuban.ru/images/is-minecraft-bedrock-free_GM479516143.pdfIn PDF document text
    • http://interokna-kuban.ru/images/minecraft-wurst-hacked-client_GM479516143.pdfIn PDF document text
    • http://interokna-kuban.ru/images/coin-master-download-hack-ios_GM406889139.pdfIn PDF document text
    • http://interokna-kuban.ru/images/hack-game-coin-master_GM406889139.pdfIn PDF document text
    • http://interokna-kuban.ru/images/coin-master-free-spins-link-cheat_GM406889139.pdfIn PDF document text
    • http://interokna-kuban.ru/images/how-do-you-get-roblox-for-free_GM431946152.pdfIn PDF document text
    • http://interokna-kuban.ru/images/how-to-get-free-spins-grom-coin-master_GM406889139.pdfIn PDF document text
    • http://interokna-kuban.ru/images/coin-master-map_GM406889139.pdfIn PDF document text
    • http://interokna-kuban.ru/images/is-there-a-way-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://interokna-kuban.ru/images/earn-free-robux-for-roblox_GM431946152.pdfIn PDF document text
    • http://interokna-kuban.ru/images/download-hack-coin-master-apk_GM406889139.pdfIn PDF document text
    • http://interokna-kuban.ru/images/coin-master-free-spins-link-facebook-page_GM406889139.pdfIn PDF document text
    • http://interokna-kuban.ru/images/cheat-codes-for-coin-master_GM406889139.pdfIn PDF document text
    • http://interokna-kuban.ru/images/coin-master-free-fire_GM406889139.pdfIn PDF document text
    • http://interokna-kuban.ru/images/free-robux-no-human-verification-or-survey-or-download-2021_GM431946152.pdfIn PDF document text
    • http://interokna-kuban.ru/images/cpbildco-robux_GM431946152.pdfIn PDF document text
    • http://interokna-kuban.ru/images/minecraft-java-edition-code-free_GM479516143.pdfIn PDF document text
    • http://interokna-kuban.ru/images/free-robux-roblox-promo-codes_GM431946152.pdfIn PDF document text
    • http://interokna-kuban.ru/images/coin-master-tricks-and-hacks_GM406889139.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_off00004581.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4581 25152 bytes
SHA-256: a415d53074cde2da6b18fca02f5e6dab3f307c032db10ca5f8db4e46e61d2671
font_01_sfnt_off00007c42.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7C42 18484 bytes
SHA-256: 5fdc582f30145a96e28329e80bd45567e2bf6a1df475cf6931e13f95db6331fe

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