Malicious PDF — malware analysis report

Static analysis result for SHA-256 9ba0466c22d53540…

MALICIOUS

PDF

34.2 KB Created: 2021-06-28 14:41:29 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: aab71daf699ce219f4cdfdf59f8c3930 SHA-1: 6addd8547c14ab92bfd7e750db8630825c8ec363 SHA-256: 9ba0466c22d53540bdcf9ac836739f77d998690ff0400162ad387c962fcfbafc
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links that redirect to malicious infrastructure, specifically targeting users interested in game hacks and free currency. The heuristic firings indicate that the PDF links to known malicious redirectors and is flagged by an ML classifier. The document body text and embedded URLs reinforce the lure of obtaining free game items, which is a common social engineering tactic.

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/free-roblox-jailbreak-account-game-hack In PDF document text
    • http://lib.vipklh.ru/repository/free-dress-roblox_GM431946152.pdfIn PDF document text
    • http://lib.vipklh.ru/repository/camecards-for-roblox-free-sent-to-email-no-surveys_GM431946152.pdfIn PDF document text
    • http://lib.vipklh.ru/repository/como-hackear-roblox-para-tener-robux-con-cheat-engine_GM431946152.pdfIn PDF document text
    • http://lib.vipklh.ru/repository/coin-master-exchange-40-free-spins_GM406889139.pdfIn PDF document text
    • http://lib.vipklh.ru/repository/roblox-cheats-mobile_GM431946152.pdfIn PDF document text
    • http://lib.vipklh.ru/repository/apps-that-give-you-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.vipklh.ru/repository/noclip-hacks-roblox-download_GM431946152.pdfIn PDF document text
    • http://lib.vipklh.ru/repository/free-robux-pastedin_GM431946152.pdfIn PDF document text
    • http://lib.vipklh.ru/repository/roblox-admin-hack-download-2021_GM431946152.pdfIn PDF document text
    • http://lib.vipklh.ru/repository/how-to-get-free-admin-on-any-roblox-game-2021_GM431946152.pdfIn PDF document text
    • http://lib.vipklh.ru/repository/minecraft-hacks-ps4_GM479516143.pdfIn PDF document text
    • http://lib.vipklh.ru/repository/free-unlimited-robux_GM431946152.pdfIn PDF document text
    • http://lib.vipklh.ru/repository/coin-master-free-2021-spin-link_GM406889139.pdfIn PDF document text
    • http://lib.vipklh.ru/repository/free-robux-link_GM431946152.pdfIn PDF document text
    • http://lib.vipklh.ru/repository/hacks-for-roblox-lumber-tycoon-2_GM431946152.pdfIn PDF document text
    • http://lib.vipklh.ru/repository/roblox-how-to-get-free-robux-no-download_GM431946152.pdfIn PDF document text
    • http://lib.vipklh.ru/repository/how-to-protect-speed-hacking-from-games-roblox_GM431946152.pdfIn PDF document text
    • http://lib.vipklh.ru/repository/roblox-robux-exploit-hack_GM431946152.pdfIn PDF document text
    • http://lib.vipklh.ru/repository/get-more-robux_GM431946152.pdfIn PDF document text
    • http://lib.vipklh.ru/repository/roblox-how-to-put-anti-cheat_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_off00002e21.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2E21 22304 bytes
SHA-256: 91d3d54f6a63c43f770eebd1f478615d04920997f59e5a73468de208b3cb5584
font_01_sfnt_off00005fbd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5FBD 19348 bytes
SHA-256: af13afa968e2f7dedc570f49bf8bdc4b867611d5787ded63297f5f9569f54688

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