Malicious PDF — malware analysis report

Static analysis result for SHA-256 5c48d2c3d53c8514…

MALICIOUS

PDF

33.6 KB Created: 2021-06-19 19:26:45 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 2688f8126e469d7e92c28d16f8b4f4ae SHA-1: 6d7c53348d747aae86e33f9a339a0726e4847c89 SHA-256: 5c48d2c3d53c851477de3f947e1e2ae6af5051d9b377dacfe0005579ed250ece
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a lure of free game hacks and generators to entice users to click on embedded links. The primary link, http://netcdn.co/app/431946152/fallout-plasma-rifle-free-roblox-model-game-hack, is identified as a malicious redirector. While no scripts were explicitly extracted, the PDF structure and embedded URLs strongly suggest a phishing or malware distribution attempt, likely initiated via a spearphishing attachment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9824

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.co/app/431946152/fallout-plasma-rifle-free-roblox-model-game-hack In PDF document text
    • http://perpustakaan.pa-jember.go.id/repository/roblox-cheat-tower-defense_GM431946152.pdfIn PDF document text
    • http://perpustakaan.pa-jember.go.id/repository/get-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://perpustakaan.pa-jember.go.id/repository/dragon-ball-after-future-roblox-hack_GM431946152.pdfIn PDF document text
    • http://perpustakaan.pa-jember.go.id/repository/increible-hack-de-roblox-robux_GM431946152.pdfIn PDF document text
    • http://perpustakaan.pa-jember.go.id/repository/coin-master-daily-free-spins-link-today-2021_GM406889139.pdfIn PDF document text
    • http://perpustakaan.pa-jember.go.id/repository/free-robux-generator-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • http://perpustakaan.pa-jember.go.id/repository/free-robux-websites-that-actually-work-2021_GM431946152.pdfIn PDF document text
    • http://perpustakaan.pa-jember.go.id/repository/rocash-com-free-robux_GM431946152.pdfIn PDF document text
    • http://perpustakaan.pa-jember.go.id/repository/get-coin-master-spins-free_GM406889139.pdfIn PDF document text
    • http://perpustakaan.pa-jember.go.id/repository/minecraft-bedrock-download_GM479516143.pdfIn PDF document text
    • http://perpustakaan.pa-jember.go.id/repository/who-hacked-roblox-to-change-the-thumbnails-of-games_GM431946152.pdfIn PDF document text
    • http://perpustakaan.pa-jember.go.id/repository/roblox-2021-hack_GM431946152.pdfIn PDF document text
    • http://perpustakaan.pa-jember.go.id/repository/coin-master-new-link-free-spin_GM406889139.pdfIn PDF document text
    • http://perpustakaan.pa-jember.go.id/repository/get-free-roblox-hats-not-patched-working-2021_GM431946152.pdfIn PDF document text
    • http://perpustakaan.pa-jember.go.id/repository/how-do-you-get-free-robux_GM431946152.pdfIn PDF document text
    • http://perpustakaan.pa-jember.go.id/repository/coin-master-online-hack-download_GM406889139.pdfIn PDF document text
    • http://perpustakaan.pa-jember.go.id/repository/robux-gift-card-free_GM431946152.pdfIn PDF document text
    • http://perpustakaan.pa-jember.go.id/repository/roblox-free-item-codes_GM431946152.pdfIn PDF document text
    • http://perpustakaan.pa-jember.go.id/repository/roblox-800-robux-hack_GM431946152.pdfIn PDF document text
    • http://perpustakaan.pa-jember.go.id/repository/free-to-play-minecraft-servers_GM479516143.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_off00002bfe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2BFE 22040 bytes
SHA-256: caf66ab05fd9e1c09d62db149c0278072bef8f1c3b486ae0186ccc38744d4473
font_01_sfnt_off00005cb1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5CB1 19796 bytes
SHA-256: 7d8a7ed478f1e011223f7409e634ced87ab8d999045c6279be04078e17ddeff1

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