Malicious PDF — malware analysis report

Static analysis result for SHA-256 78225a7bde003b10…

MALICIOUS

PDF

35.4 KB Created: 2021-07-03 21:09:55 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-16
MD5: d2d67166b41621fdda53d3c9fef90642 SHA-1: 9126e0543e235771bbd2d4ccc631df15634c596a SHA-256: 78225a7bde003b10af966b1b62e01cde8b4d8d74afa89e1bd41b003910c6bb60
200 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 5

  • 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.
  • Brand-impersonation credential phishing lure high SE_BRAND_CREDENTIAL_PHISH
    Document impersonates a well-known consumer brand and uses account-security / verification language ('unusual activity', 'account on hold', 'verify your account') to steer the reader to a credential-harvesting link. Corroborated by: call-to-action link host does not match the impersonated brand: http://netcdn.tw/app/431946152/hacked-roblox-game-game-hack.
  • 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/hacked-roblox-game-game-hack In PDF document text
    • https://satuoblong.com/ckfinder/userfiles/files/coun-master_GM406889139.pdfIn PDF document text
    • https://satuoblong.com/ckfinder/userfiles/files/hack-coin-master-online-without-human-verification_GM406889139.pdfIn PDF document text
    • https://satuoblong.com/ckfinder/userfiles/files/scriptexecutor-roblox-free_GM431946152.pdfIn PDF document text
    • https://satuoblong.com/ckfinder/userfiles/files/coin-master-free-cards_GM406889139.pdfIn PDF document text
    • https://satuoblong.com/ckfinder/userfiles/files/roblox-sued_GM431946152.pdfIn PDF document text
    • https://satuoblong.com/ckfinder/userfiles/files/minecraft-nintendo-switch-digital-code-free_GM479516143.pdfIn PDF document text
    • https://satuoblong.com/ckfinder/userfiles/files/cheat-engine-closes-roblox_GM431946152.pdfIn PDF document text
    • https://satuoblong.com/ckfinder/userfiles/files/como-hackear-roblox-apk-mediafire-para-ir-mas-rapido_GM431946152.pdfIn PDF document text
    • https://satuoblong.com/ckfinder/userfiles/files/free-robux-games-that-actually-work-2021_GM431946152.pdfIn PDF document text
    • https://satuoblong.com/ckfinder/userfiles/files/cmo-hackear-a-la-gente-en-roblox-jailbreak_GM431946152.pdfIn PDF document text
    • https://satuoblong.com/ckfinder/userfiles/files/free-robux-no-human-verification-no-survey_GM431946152.pdfIn PDF document text
    • https://satuoblong.com/ckfinder/userfiles/files/how-to-get-minecraft-for-free-on-phone_GM479516143.pdfIn PDF document text
    • https://satuoblong.com/ckfinder/userfiles/files/how-to-hack-roblox-accounts-2021-december_GM431946152.pdfIn PDF document text
    • https://satuoblong.com/ckfinder/userfiles/files/free-unlimited-robux_GM431946152.pdfIn PDF document text
    • https://satuoblong.com/ckfinder/userfiles/files/free-robux-promo-codes-no-inspect_GM431946152.pdfIn PDF document text
    • https://satuoblong.com/ckfinder/userfiles/files/roblox-fly-hacks-2021_GM431946152.pdfIn PDF document text
    • https://satuoblong.com/ckfinder/userfiles/files/rolox-free-robux_GM431946152.pdfIn PDF document text
    • https://satuoblong.com/ckfinder/userfiles/files/roblox-freebies-com-hack_GM431946152.pdfIn PDF document text
    • https://satuoblong.com/ckfinder/userfiles/files/free-roblox-outfits_GM431946152.pdfIn PDF document text
    • https://satuoblong.com/ckfinder/userfiles/files/how-to-get-roblox-items-for-free-2021_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_off00003203.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3203 23100 bytes
SHA-256: 37a3898c723692baee3ba9397e3a851c9b43a58067a0adf1bc43217627df878f
font_01_sfnt_off00006532.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6532 19092 bytes
SHA-256: e06e2496ecc1c3d364978b7a8e0823831cb090cb55aacb01fa8d052e2f05e4c6

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