Malicious PDF — malware analysis report

Static analysis result for SHA-256 ea25a784e072ae83…

MALICIOUS

PDF

34.3 KB Created: 2021-07-06 19:23:13 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: e8056b539ff6ef8291e4cbcb74ea357f SHA-1: fc19f4e053fe3bb833f19e17a9845c4d6d386ab7 SHA-256: ea25a784e072ae83189c3758ae4f3c5a9d2656ea74cd80d9ffd0763011563ded
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links that redirect to malicious infrastructure, specifically promoting 'free generator / game hack' lures. The primary redirect URL is http://netcdn.tw/app/406889139/coin-master-hack-spins-download-game-hack. While no scripts were explicitly extracted, the presence of malicious redirector links and the ML classifier's high confidence indicate a phishing or scam attempt designed to trick users into visiting potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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.tw/app/406889139/coin-master-hack-spins-download-game-hack In PDF document text
    • https://www.owlweb.co.uk/uploads/files/files/can-you-play-minecraft-for-free_GM479516143.pdfIn PDF document text
    • https://www.owlweb.co.uk/uploads/files/files/roblox-free-robux-legal_GM431946152.pdfIn PDF document text
    • https://www.owlweb.co.uk/uploads/files/files/roblox-mobile-hack_GM431946152.pdfIn PDF document text
    • https://www.owlweb.co.uk/uploads/files/files/free-minecraft-skins-java_GM479516143.pdfIn PDF document text
    • https://www.owlweb.co.uk/uploads/files/files/free-coins-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://www.owlweb.co.uk/uploads/files/files/free-robux-id-roblox_GM431946152.pdfIn PDF document text
    • https://www.owlweb.co.uk/uploads/files/files/robux-today_GM431946152.pdfIn PDF document text
    • https://www.owlweb.co.uk/uploads/files/files/how-do-u-scamm-people-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://www.owlweb.co.uk/uploads/files/files/bloxpink-free-robux_GM431946152.pdfIn PDF document text
    • https://www.owlweb.co.uk/uploads/files/files/all-free-for-catalog-roblox-pastebin_GM431946152.pdfIn PDF document text
    • https://www.owlweb.co.uk/uploads/files/files/blox-world-free-robux_GM431946152.pdfIn PDF document text
    • https://www.owlweb.co.uk/uploads/files/files/hack-coin-master-xyz_GM406889139.pdfIn PDF document text
    • https://www.owlweb.co.uk/uploads/files/files/robux-fun-hack_GM431946152.pdfIn PDF document text
    • https://www.owlweb.co.uk/uploads/files/files/rbx-gg-free-robux_GM431946152.pdfIn PDF document text
    • https://www.owlweb.co.uk/uploads/files/files/how-to-hack-in-roblox-games-to-get-gold_GM431946152.pdfIn PDF document text
    • https://www.owlweb.co.uk/uploads/files/files/how-to-get-free-robux-on-chromebook_GM431946152.pdfIn PDF document text
    • https://www.owlweb.co.uk/uploads/files/files/free-spin-coin-master-link-2021_GM406889139.pdfIn PDF document text
    • https://www.owlweb.co.uk/uploads/files/files/robux-free-gift-card-org-hack_GM431946152.pdfIn PDF document text
    • https://www.owlweb.co.uk/uploads/files/files/free-minecraft-client_GM479516143.pdfIn PDF document text
    • https://www.owlweb.co.uk/uploads/files/files/easy-coin-master-hack_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
font_00_sfnt_off00002e67.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2E67 22852 bytes
SHA-256: 6e504dd25616bfd2de98bfbfc6e68c32081c2445b42fc7a7d66910a202e1a336
font_01_sfnt_off000061b8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x61B8 18760 bytes
SHA-256: 76054f41da061ae099da4f3a41336b6c33916adb76f409e4756526787b3fdc93

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