Malicious PDF — malware analysis report

Static analysis result for SHA-256 c5dedc3cf6450f0a…

MALICIOUS

PDF

34.7 KB Created: 2021-06-18 03:49:37 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-27
MD5: 50dd5c8745721e9b68a704fd23e3bf1e SHA-1: 019780dca0f8f584df04745c924f12a189420da8 SHA-256: c5dedc3cf6450f0a9f388463e80fd498bc3b67d51e74cbd1f2345a4fb234858f
220 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.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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/how-to-create-a-group-in-roblox-for-free-game-hack In PDF document text
    • https://perpustakaan.pn-bengkalis.go.id/repository/how-to-get-any-roblox-high-school-car-for-free_GM431946152.pdfIn PDF document text
    • https://perpustakaan.pn-bengkalis.go.id/repository/apocalypse-rising-hack-roblox-2021_GM431946152.pdfIn PDF document text
    • https://perpustakaan.pn-bengkalis.go.id/repository/without-tiktok-free-fire_GM835599320.pdfIn PDF document text
    • https://perpustakaan.pn-bengkalis.go.id/repository/robux-generator-that-works_GM431946152.pdfIn PDF document text
    • https://perpustakaan.pn-bengkalis.go.id/repository/pig-master-coin-master-free-spin_GM406889139.pdfIn PDF document text
    • https://perpustakaan.pn-bengkalis.go.id/repository/free-spins-coin-master-october-17-2021_GM406889139.pdfIn PDF document text
    • https://perpustakaan.pn-bengkalis.go.id/repository/coin-master-free-spins-link-today-new-2021_GM406889139.pdfIn PDF document text
    • https://perpustakaan.pn-bengkalis.go.id/repository/how-to-get-free-spins-on-coin-master-2021-links_GM406889139.pdfIn PDF document text
    • https://perpustakaan.pn-bengkalis.go.id/repository/free-robux-no-verification-needed_GM431946152.pdfIn PDF document text
    • https://perpustakaan.pn-bengkalis.go.id/repository/when-was-minecraft-free_GM479516143.pdfIn PDF document text
    • https://perpustakaan.pn-bengkalis.go.id/repository/original-roblox_GM431946152.pdfIn PDF document text
    • https://perpustakaan.pn-bengkalis.go.id/repository/free-spin-in-coin-master_GM406889139.pdfIn PDF document text
    • https://perpustakaan.pn-bengkalis.go.id/repository/free-robux-scam_GM431946152.pdfIn PDF document text
    • https://perpustakaan.pn-bengkalis.go.id/repository/reddit-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://perpustakaan.pn-bengkalis.go.id/repository/how-to-get-minecraft-for-free-on-phone_GM479516143.pdfIn PDF document text
    • https://perpustakaan.pn-bengkalis.go.id/repository/how-to-gain-more-spins-on-coin-master-for-free_GM406889139.pdfIn PDF document text
    • https://perpustakaan.pn-bengkalis.go.id/repository/coin-master-free-2021-spin-link_GM406889139.pdfIn PDF document text
    • https://perpustakaan.pn-bengkalis.go.id/repository/coin-master-daily-free-spins-link-today-haktuts_GM406889139.pdfIn PDF document text
    • https://perpustakaan.pn-bengkalis.go.id/repository/free-spins-coin-master-facebook_GM406889139.pdfIn PDF document text
    • https://perpustakaan.pn-bengkalis.go.id/repository/how-to-get-free-followers-on-roblox_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_off00003150.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3150 21972 bytes
SHA-256: a87139d14e96c218f7cb2d4f15c6b90c81966cd7a5111d21b419a7786d3653cb
font_01_sfnt_off000061e9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x61E9 19236 bytes
SHA-256: 071bb63055edf2d672084b747f30e67a2ea3e4ffd7a7f578fcc1575aa7c1f288

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