Malicious PDF — malware analysis report

Static analysis result for SHA-256 50653bafb0dbaf99…

MALICIOUS

PDF

45.4 KB Created: 2021-06-03 08:34:04 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: a8f860f9bf945e64bd92ba44d8d52c36 SHA-1: aa54367201472f5af62b5ebb5fddfa87f17ef5f0 SHA-256: 50653bafb0dbaf99fe57a5d9ad32a7e68286bd687abf0d6ee50ef247c946fb00
200 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document employs a lure related to game hacks and impersonates the Apple brand to trick users into clicking malicious links. The primary malicious URL identified is https://netcdn.online/app/431946152/freerobuxhack-us-2021-game-hack, which is part of a known malicious redirector infrastructure. The document's structure and embedded links suggest an attempt to lead users to potentially harmful content or phishing sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9864

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: https://netcdn.online/app/431946152/freerobuxhack-us-2021-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 https://netcdn.online/app/431946152/freerobuxhack-us-2021-game-hack In PDF document text
    • https://pariwisata.denpasarkota.go.id/new/public/ckfinder/userfiles/files/classic-minecraft-net-hacks_GM479516143.pdfIn PDF document text
    • https://pariwisata.denpasarkota.go.id/new/public/ckfinder/userfiles/files/what-is-robux-in-roblox_GM431946152.pdfIn PDF document text
    • https://pariwisata.denpasarkota.go.id/new/public/ckfinder/userfiles/files/free-roblox-adopt-me-pets_GM431946152.pdfIn PDF document text
    • https://pariwisata.denpasarkota.go.id/new/public/ckfinder/userfiles/files/coin-master-free-spins-today-new_GM406889139.pdfIn PDF document text
    • https://pariwisata.denpasarkota.go.id/new/public/ckfinder/userfiles/files/free-robux-pin-codes_GM431946152.pdfIn PDF document text
    • https://pariwisata.denpasarkota.go.id/new/public/ckfinder/userfiles/files/robux-match_GM431946152.pdfIn PDF document text
    • https://pariwisata.denpasarkota.go.id/new/public/ckfinder/userfiles/files/how-to-download-minecraft-for-free-on-your-phone_GM479516143.pdfIn PDF document text
    • https://pariwisata.denpasarkota.go.id/new/public/ckfinder/userfiles/files/coin-master-free-spins-2021-app-download_GM406889139.pdfIn PDF document text
    • https://pariwisata.denpasarkota.go.id/new/public/ckfinder/userfiles/files/how-to-get-free-robux-easy-hack_GM431946152.pdfIn PDF document text
    • https://pariwisata.denpasarkota.go.id/new/public/ckfinder/userfiles/files/roblox-robux-generator-no-human-verification_GM431946152.pdfIn PDF document text
    • https://pariwisata.denpasarkota.go.id/new/public/ckfinder/userfiles/files/minecraft-pocket-apk_GM479516143.pdfIn PDF document text
    • https://pariwisata.denpasarkota.go.id/new/public/ckfinder/userfiles/files/roblox-hack-scripts-pastebin_GM431946152.pdfIn PDF document text
    • https://pariwisata.denpasarkota.go.id/new/public/ckfinder/userfiles/files/get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://pariwisata.denpasarkota.go.id/new/public/ckfinder/userfiles/files/static-moonactive-net-rewards-2021_GM406889139.pdfIn PDF document text
    • https://pariwisata.denpasarkota.go.id/new/public/ckfinder/userfiles/files/free-robux-hack-us_GM431946152.pdfIn PDF document text
    • https://pariwisata.denpasarkota.go.id/new/public/ckfinder/userfiles/files/free-private-server-roblox_GM431946152.pdfIn PDF document text
    • https://pariwisata.denpasarkota.go.id/new/public/ckfinder/userfiles/files/free-coin-master-spins-links-2021_GM406889139.pdfIn PDF document text
    • https://pariwisata.denpasarkota.go.id/new/public/ckfinder/userfiles/files/roblox-cheat-engine-download-2021_GM431946152.pdfIn PDF document text
    • https://pariwisata.denpasarkota.go.id/new/public/ckfinder/userfiles/files/coin-master-hack-online-generator-without-human-verification_GM406889139.pdfIn PDF document text
    • https://pariwisata.denpasarkota.go.id/new/public/ckfinder/userfiles/files/how-to-get-free-robux-generator_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_off000050d0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x50D0 25992 bytes
SHA-256: 51f690192fe3d4636fecdc1dd6db566d9a8b31d245cb52be6095d812fc27ede9
font_01_sfnt_off00008c5f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8C5F 19168 bytes
SHA-256: efb3faf8613e574aaafbc2c03eecac9d279c27a31d34e4d9725215b9c75db868