Malicious PDF — malware analysis report

Static analysis result for SHA-256 32552b11f3b56a75…

MALICIOUS

PDF

34.7 KB Created: 2021-07-10 02:00:52 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: fbf92e7e194a183bb33901256fb1ed8e SHA-1: 8b2ce64ab8ad68e14a7a85dd829be879e2049dcd SHA-256: 32552b11f3b56a7547dceab9ea5b0062831ea77aeb5cc499c1176340e0f2ff51
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a lure related to free game currency and hacks, directing users to a known malicious redirector. The embedded URL, http://netcdn.tw/app/431946152/how-can-you-get-free-robux-game-hack, is associated with malicious redirector infrastructure. The document's content and heuristics strongly suggest a phishing or scam attempt designed to lead users to potentially harmful sites.

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.tw/app/431946152/how-can-you-get-free-robux-game-hack In PDF document text
    • https://www.extrifit.com/uploads/ckfinder/userfiles/files/free-robux-and-tickets-on-roblox-hack_GM431946152.pdfIn PDF document text
    • https://www.extrifit.com/uploads/ckfinder/userfiles/files/filtered15zip-roblox-hack_GM431946152.pdfIn PDF document text
    • https://www.extrifit.com/uploads/ckfinder/userfiles/files/free-robux-gen_GM431946152.pdfIn PDF document text
    • https://www.extrifit.com/uploads/ckfinder/userfiles/files/free-spin-today-coin-master_GM406889139.pdfIn PDF document text
    • https://www.extrifit.com/uploads/ckfinder/userfiles/files/how-to-cheat-money-into-roblox-high-school_GM431946152.pdfIn PDF document text
    • https://www.extrifit.com/uploads/ckfinder/userfiles/files/scaffold-minecraft-hack_GM479516143.pdfIn PDF document text
    • https://www.extrifit.com/uploads/ckfinder/userfiles/files/free-tiktok-bots_GM835599320.pdfIn PDF document text
    • https://www.extrifit.com/uploads/ckfinder/userfiles/files/claim-free-robux-button_GM431946152.pdfIn PDF document text
    • https://www.extrifit.com/uploads/ckfinder/userfiles/files/free-roblox-accounts-generator_GM431946152.pdfIn PDF document text
    • https://www.extrifit.com/uploads/ckfinder/userfiles/files/robux-matchcomfree-robux_GM431946152.pdfIn PDF document text
    • https://www.extrifit.com/uploads/ckfinder/userfiles/files/how-to-get-free-cards-sets-for-coin-master_GM406889139.pdfIn PDF document text
    • https://www.extrifit.com/uploads/ckfinder/userfiles/files/free-roblox-code-generator-no-download_GM431946152.pdfIn PDF document text
    • https://www.extrifit.com/uploads/ckfinder/userfiles/files/hack-card-collection-coin-master_GM406889139.pdfIn PDF document text
    • https://www.extrifit.com/uploads/ckfinder/userfiles/files/roblox-hack-2021_GM431946152.pdfIn PDF document text
    • https://www.extrifit.com/uploads/ckfinder/userfiles/files/how-to-change-roblox-name-free-2021_GM431946152.pdfIn PDF document text
    • https://www.extrifit.com/uploads/ckfinder/userfiles/files/roblox-free-draw-2-how-to-teleport_GM431946152.pdfIn PDF document text
    • https://www.extrifit.com/uploads/ckfinder/userfiles/files/roblox-cheats-and-hacks-no-download_GM431946152.pdfIn PDF document text
    • https://www.extrifit.com/uploads/ckfinder/userfiles/files/roblox-death-sound-effect-free-download_GM431946152.pdfIn PDF document text
    • https://www.extrifit.com/uploads/ckfinder/userfiles/files/sake-roblox-hacks_GM431946152.pdfIn PDF document text
    • https://www.extrifit.com/uploads/ckfinder/userfiles/files/play-coin-master-online-free_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_off000031c3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x31C3 22048 bytes
SHA-256: a9fddeae6294bc25a8418ef24c895f4e39df42236629f1746a58f1ad2fce84f3
font_01_sfnt_off0000623e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x623E 19144 bytes
SHA-256: 8668bba6b571f2ff0c38dc1335afffc5959d5ef775e0221b19e79d7de012f826

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