Malicious PDF — malware analysis report

Static analysis result for SHA-256 6ef688e198d5b2fa…

MALICIOUS

PDF

48.4 KB Created: 2021-06-09 05:33:23 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: d200564eb3ba80413c4c3e0bd1672565 SHA-1: c1f5978a21731f474e597a6545275c69c4e00783 SHA-256: 6ef688e198d5b2faecd4668a868eda7f2f4ac9b17239817a4dfd6b239ef3f618
160 Risk Score

Malware Insights

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

The PDF document contains multiple embedded links that redirect to known malicious infrastructure, specifically promoting game hacks and cheats. The primary lure appears to be a 'Roblox Shower Simulator Cheats' generator, which leads to a URL hosted on netcdn.tw. This indicates a phishing or scam attempt designed to redirect users to potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9796

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 https://netcdn.tw/app/431946152/roblox-shower-simulator-cheats-for-time-game-hack In PDF document text
    • http://perpus.poltekeskupang.ac.id//repository/free-robux-script_GM431946152.pdfIn PDF document text
    • http://perpus.poltekeskupang.ac.id/repository/coin-master-daily-gift-free-spins-and-coins_GM406889139.pdfIn PDF document text
    • http://perpus.poltekeskupang.ac.id/repository/coin-master-free-spin-app-iphone_GM406889139.pdfIn PDF document text
    • http://perpus.poltekeskupang.ac.id//repository/minecraft-free-download-android_GM479516143.pdfIn PDF document text
    • http://perpus.poltekeskupang.ac.id/repository/how-to-get-free-robux-fast_GM431946152.pdfIn PDF document text
    • http://perpus.poltekeskupang.ac.id/repository/coin-master-hack-tool-exe_GM406889139.pdfIn PDF document text
    • http://perpus.poltekeskupang.ac.id/repository/coin-master-cheat-codes-free_GM406889139.pdfIn PDF document text
    • http://perpus.poltekeskupang.ac.id//repository/minecraft-realms-free-codes_GM479516143.pdfIn PDF document text
    • http://perpus.poltekeskupang.ac.id/repository/coin-master-free-spins-link-facebook-page_GM406889139.pdfIn PDF document text
    • http://perpus.poltekeskupang.ac.id//repository/vpn-for-tiktok-free_GM835599320.pdfIn PDF document text
    • http://perpus.poltekeskupang.ac.id/repository/coin-master-rewards-app_GM406889139.pdfIn PDF document text
    • http://perpus.poltekeskupang.ac.id/repository/roblox-hacked-version-download_GM431946152.pdfIn PDF document text
    • http://perpus.poltekeskupang.ac.id//repository/real-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://perpus.poltekeskupang.ac.id//repository/roblox-adopt-me-hack_GM431946152.pdfIn PDF document text
    • http://perpus.poltekeskupang.ac.id//repository/rbx-robux_GM431946152.pdfIn PDF document text
    • http://perpus.poltekeskupang.ac.id//repository/coin-master-free-spin-codes_GM406889139.pdfIn PDF document text
    • http://perpus.poltekeskupang.ac.id//repository/real-robux-generator-2021_GM431946152.pdfIn PDF document text
    • http://perpus.poltekeskupang.ac.id/repository/coin-master-free-box_GM406889139.pdfIn PDF document text
    • http://perpus.poltekeskupang.ac.id//repository/free-roblox-accounts-with-robux-that-work-2021_GM431946152.pdfIn PDF document text
    • http://perpus.poltekeskupang.ac.id/repository/free-coin-app_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off000052f8.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x52F8 26436 bytes
SHA-256: 1d34a96ecf6e48a3f0985240d702001f770aeb982516eb3ee581c9964afece7f
font_01_sfnt_off00008e0b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8E0B 2880 bytes
SHA-256: 10d025f04f706eb71cdda4f99784df1b9ccb52e48080e43095e0398eaef6f132
font_02_sfnt_off000097f5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x97F5 19132 bytes
SHA-256: c967e651379aa2ae28be85784a5381ced31f971e7127b2f1c3e9dd3b0de1796e

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