Malicious PDF — malware analysis report

Static analysis result for SHA-256 9cac2f75a34329f5…

MALICIOUS

PDF

44.3 KB Created: 2021-06-03 04:59:20 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 9109492887ca49d0f2f12ed4f3af323b SHA-1: 13c8f9710d32626dbae43eab9793f67d73b3f0fe SHA-256: 9cac2f75a34329f5f0b3a03656f8c1dba6fe24238320ed21faa7a4e6da1ddae0
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a lure related to free game hacks and Robux, redirecting users to malicious infrastructure. The embedded URL, https://netcdn.online/app/431946152/blox-land-free-robux-game-hack, is identified as a known malicious redirector. While no scripts were explicitly extracted, the PDF structure and heuristics suggest it is designed to lead the user to potentially harmful content or further downloads, aligning with a phishing or scamming attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9865

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/blox-land-free-robux-game-hack In PDF document text
    • https://www.owlweb.co.uk/uploads/files/files/games-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://www.owlweb.co.uk/uploads/files/files/free-robux-no-downloading-apps_GM431946152.pdfIn PDF document text
    • https://www.owlweb.co.uk/uploads/files/files/can-you-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • https://www.owlweb.co.uk/uploads/files/files/is-tiktok-free-app_GM835599320.pdfIn PDF document text
    • https://www.owlweb.co.uk/uploads/files/files/blogspot-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://www.owlweb.co.uk/uploads/files/files/how-to-get-minecraft-for-free-2021_GM479516143.pdfIn PDF document text
    • https://www.owlweb.co.uk/uploads/files/files/minecraft-bedrock-hacks_GM479516143.pdfIn PDF document text
    • https://www.owlweb.co.uk/uploads/files/files/coin-master-daily-free-spins-and-coins_GM406889139.pdfIn PDF document text
    • https://www.owlweb.co.uk/uploads/files/files/free-coin-master-spin-and-coin-link_GM406889139.pdfIn PDF document text
    • https://www.owlweb.co.uk/uploads/files/files/make-your-own-minecraft-server-free_GM479516143.pdfIn PDF document text
    • https://www.owlweb.co.uk/uploads/files/files/free-robux-app-2021_GM431946152.pdfIn PDF document text
    • https://www.owlweb.co.uk/uploads/files/files/how-to-get-free-spins-on-coin-master-2021-ios_GM406889139.pdfIn PDF document text
    • https://www.owlweb.co.uk/uploads/files/files/minecraft-free-minecoins_GM479516143.pdfIn PDF document text
    • https://www.owlweb.co.uk/uploads/files/files/free-minecraft-servers-to-join_GM479516143.pdfIn PDF document text
    • https://www.owlweb.co.uk/uploads/files/files/roblox-free-robux-generator_GM431946152.pdfIn PDF document text
    • https://www.owlweb.co.uk/uploads/files/files/coin-master-hacks-that-work_GM406889139.pdfIn PDF document text
    • https://www.owlweb.co.uk/uploads/files/files/coin-master-spins-hack_GM406889139.pdfIn PDF document text
    • https://www.owlweb.co.uk/uploads/files/files/how-to-install-minecraft-for-free_GM479516143.pdfIn PDF document text
    • https://www.owlweb.co.uk/uploads/files/files/coin-master-hack-spins-apk-download_GM406889139.pdfIn PDF document text
    • https://www.owlweb.co.uk/uploads/files/files/orewards-com-free-robux_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
stream_004_off00005146.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5146 24672 bytes
SHA-256: b953a30ba3bbbb23543eb6f8c322cbf7a8068b957d2d1c94e627a9093ada26c6
font_01_sfnt_off000089ea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x89EA 18492 bytes
SHA-256: 43325585731fb5abef9629b4ee3027de7c41cdd34c16702b82f5d396e8a55598

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