Malicious PDF — malware analysis report

Static analysis result for SHA-256 27d78c3217ac5002…

MALICIOUS

PDF

51.0 KB Created: 2021-06-03 08:44:59 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: ce9bc15a6549938de1d9031da44cdc01 SHA-1: bf1dfdb003f7f749883c6a53aa4509efe5df570f SHA-256: 27d78c3217ac50029f624586ac695b167332cf562425e6d2cc1c99051dff2ffe
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to known malicious redirectors and game hack lures, indicating a phishing or scam attempt. The primary malicious URL identified is https://netcdn.online/app/431946152/tower-of-hell-roblox-hack-game-hack. Although no scripts were explicitly extracted, the PDF structure and embedded links strongly suggest a malicious intent to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9849

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.online/app/431946152/tower-of-hell-roblox-hack-game-hack In PDF document text
    • http://lib.fisipumt.ac.id//repository/coin-master-heaven-daily-free-spins-link-today_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/how-to-get-roebucks_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/coin-master-32-hack-apk-download_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/how-to-get-free-pet-food-in-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/coin-master-attack-hack_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/free-coins-and-spins-2021_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/coin-master-free-spins-and-coins-hack_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/free-2021-robux_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/coin-master-hacks-iphone_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/today-free-spin-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/aimbot-download-roblox_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/minecraft-skins-download-free_GM479516143.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/coin-master-rewards-free-spins_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/minecraft-free-edition_GM479516143.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/free-coin-master-spins-hack_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/coin-master-free-spins-and-coins-for-today_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/my-roblox-account-was-hacked_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/no-human-verification-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/coin-master-free-pet-food_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/coin-master-free-spins-daily-fb-champion_GM406889139.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
stream_004_off0000508c.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x508C 38892 bytes
SHA-256: 618256a50987d42ff5d0cd4f7e2ba62263dd990ef131616cdcc4a224b77ba6dc
font_01_sfnt_off0000a4e2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA4E2 18344 bytes
SHA-256: 03b0a99fcd61db89faa26c1828de523dc9cf9d0c2b9dbfe52dc8b55ccb7305a4