Malicious PDF — malware analysis report

Static analysis result for SHA-256 fc7ceb512092eb7e…

MALICIOUS

PDF

46.8 KB Created: 2021-06-03 19:34:07 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: a4991b234eb53ce8087b7c804d9f0a17 SHA-1: b9f21ce5585c7b8f4db83a5a6ebfad56d0adc45e SHA-256: fc7ceb512092eb7eec3cec6c370a89dcce0260997a53e10ca07eb099eb753554
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links to known malicious redirectors, specifically advertising 'free generators' or 'game hacks' to lure victims. The primary malicious URL identified is https://netcdn.online/app/431946152/can-you-get-robux-for-free-game-hack. While no scripts were explicitly extracted, the PDF structure and heuristic firings strongly indicate a malicious redirector workflow designed to lead users to potentially harmful content or further malware downloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9832

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/can-you-get-robux-for-free-game-hack In PDF document text
    • http://library.ulb.ac.id//repository/hack-coin-master-using-pc_GM406889139.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/robux-miner_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/coin-master-free-spins-daily-link-updated_GM406889139.pdfIn PDF document text
    • http://library.ulb.ac.id//repository/200-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/coin-master-free-spins-only_GM406889139.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/roblox-data-breach_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/com-roblox_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/hacks-minecraft_GM479516143.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/coin-master-links-free-spins_GM406889139.pdfIn PDF document text
    • http://library.ulb.ac.id//repository/coin-master-heaven-free-spins_GM406889139.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/how-to-hack-coin-master-game_GM406889139.pdfIn PDF document text
    • http://library.ulb.ac.id//repository/60-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/oprewards-robux_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/fast-robux-online_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/free-minecraft-servers-to-join_GM479516143.pdfIn PDF document text
    • http://library.ulb.ac.id//repository/coin-mster-free_GM406889139.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/http-appsmob-info-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/free-cracked-minecraft-server-hosting_GM479516143.pdfIn PDF document text
    • http://library.ulb.ac.id//repository/coin-master-free-spins-promo-code_GM406889139.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/play-coin-master-for-free_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_off00005188.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5188 29284 bytes
SHA-256: d74ead240dcc076a8a24555839f6c1c584e3e321a2c5d409d89829a648602da0
font_01_sfnt_off000093f5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x93F5 18508 bytes
SHA-256: c061b59ab901ec7c7e5d17bc5fec7ace191fd36e08e64edc0ca642be8bf86a0e

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