Malicious PDF — malware analysis report

Static analysis result for SHA-256 4e348ca92235a71f…

MALICIOUS

PDF

36.5 KB Created: 2021-06-27 19:52:20 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-19
MD5: c924ba4e71de81434a37a0bd68e191c8 SHA-1: 10489b72a3333dc4c975682a55b9eda9289fbc5e SHA-256: 4e348ca92235a71fc63c9a5673d74ebddc768a6eb000e861b77deaa920c978c3
180 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9984

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.
  • Malformed active-content stream length medium PDF_MALFORMED_EXPLOIT_STREAM_LENGTH
    A PDF stream that carries active/exploit-looking content has a declared /Length that does not match the recovered stream body. Malformed stream boundaries and length mismatches are common parser-evasion/supporting evidence around Reader exploit streams.
  • 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/infinite-robux-hack-game-hack In PDF document text
    • https://pt-mataram.go.id/perpustakaan/repository/coin-master-village-cost_GM406889139.pdfIn PDF document text
    • https://pt-mataram.go.id/perpustakaan/repository/protosmasher-roblox-free_GM431946152.pdfIn PDF document text
    • https://pt-mataram.go.id/perpustakaan/repository/can-i-play-minecraft-for-free_GM479516143.pdfIn PDF document text
    • https://pt-mataram.go.id/perpustakaan/repository/hacks-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://pt-mataram.go.id/perpustakaan/repository/free-robux-generator-no-surveys-scam_GM431946152.pdfIn PDF document text
    • https://pt-mataram.go.id/perpustakaan/repository/how-to-make-robux-on-roblox_GM431946152.pdfIn PDF document text
    • https://pt-mataram.go.id/perpustakaan/repository/hack-coin-master-dzooka_GM406889139.pdfIn PDF document text
    • https://pt-mataram.go.id/perpustakaan/repository/free-robux-and-tix-website_GM431946152.pdfIn PDF document text
    • https://pt-mataram.go.id/perpustakaan/repository/jailbreak-free-phone-calls-roblox_GM431946152.pdfIn PDF document text
    • https://pt-mataram.go.id/perpustakaan/repository/blogspot-coin-master_GM406889139.pdfIn PDF document text
    • https://pt-mataram.go.id/perpustakaan/repository/blood-t-shirt-roblox-free_GM431946152.pdfIn PDF document text
    • https://pt-mataram.go.id/perpustakaan/repository/client-minecraft_GM479516143.pdfIn PDF document text
    • https://pt-mataram.go.id/perpustakaan/repository/how-to-get-free-cards-in-coin-master_GM406889139.pdfIn PDF document text
    • https://pt-mataram.go.id/perpustakaan/repository/coin-master-free-spin-realme-products_GM406889139.pdfIn PDF document text
    • https://pt-mataram.go.id/perpustakaan/repository/vip-server-roblox-free_GM431946152.pdfIn PDF document text
    • https://pt-mataram.go.id/perpustakaan/repository/free-spin-coin-master-link-2021_GM406889139.pdfIn PDF document text
    • https://pt-mataram.go.id/perpustakaan/repository/how-to-get-minecraft-for-free-on-laptop_GM479516143.pdfIn PDF document text
    • https://pt-mataram.go.id/perpustakaan/repository/roblox-counter-blox-hack-aimbot_GM431946152.pdfIn PDF document text
    • https://pt-mataram.go.id/perpustakaan/repository/earnrobux_GM431946152.pdfIn PDF document text
    • https://pt-mataram.go.id/perpustakaan/repository/synapse-roblox-free_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_off00003523.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3523 23344 bytes
SHA-256: 370dce66a645fa41824634f4f23f1ef05fe4522cd9b085b4d81ba2903ac08986
font_01_sfnt_off000069ff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x69FF 18948 bytes
SHA-256: 5dbc8ab671563fa2ca2d141c5967afe0445bcca2b3072bf90b71123d8d369128

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