Malicious PDF — malware analysis report

Static analysis result for SHA-256 030efbceeec6694d…

MALICIOUS

PDF

35.6 KB Created: 2021-07-09 19:27:47 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 2a4d86b2adffbcdbf4d38711e417ee64 SHA-1: cb1fdd4b63e1126385f73d59300cadf2a7e9eac2 SHA-256: 030efbceeec6694de2ca6ad7a9c7dbaa3d63b9a45c7f141d4c77fa4094fc4b3d
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded links and a visible call-to-action button, all directing users towards game hack generators and related lures. The primary link, http://netcdn.tw/app/406889139/coin-master-hack-2021-app-game-hack, is identified as a malicious redirector. This suggests the document's purpose is to trick users into visiting these sites, likely for credential harvesting or to download further malware.

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-2021-app-game-hack In PDF document text
    • https://mawaridschools.com/uploaded_files/userfiles/files/flamingo-skin-but-its-free-roblox_GM431946152.pdfIn PDF document text
    • https://mawaridschools.com/uploaded_files/userfiles/files/free-robux-codes_GM431946152.pdfIn PDF document text
    • https://mawaridschools.com/uploaded_files/userfiles/files/moonactive-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • https://mawaridschools.com/uploaded_files/userfiles/files/coin-master-hack-tool-apk-download_GM406889139.pdfIn PDF document text
    • https://mawaridschools.com/uploaded_files/userfiles/files/minecraft-hack-client-download_GM479516143.pdfIn PDF document text
    • https://mawaridschools.com/uploaded_files/userfiles/files/minecraft-pe-hacks_GM479516143.pdfIn PDF document text
    • https://mawaridschools.com/uploaded_files/userfiles/files/free-online-minecraft-server_GM479516143.pdfIn PDF document text
    • https://mawaridschools.com/uploaded_files/userfiles/files/coin-master-hack-generator-tool_GM406889139.pdfIn PDF document text
    • https://mawaridschools.com/uploaded_files/userfiles/files/free-spins-on-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://mawaridschools.com/uploaded_files/userfiles/files/roblox-hotel-empire-tycoon-cheats_GM431946152.pdfIn PDF document text
    • https://mawaridschools.com/uploaded_files/userfiles/files/how-to-get-creative-mode-in-minecraft-server-hack_GM479516143.pdfIn PDF document text
    • https://mawaridschools.com/uploaded_files/userfiles/files/free-robux-obby-working-2021_GM431946152.pdfIn PDF document text
    • https://mawaridschools.com/uploaded_files/userfiles/files/free-robux-aout-2021_GM431946152.pdfIn PDF document text
    • https://mawaridschools.com/uploaded_files/userfiles/files/coin-master-free-spins-cheat_GM406889139.pdfIn PDF document text
    • https://mawaridschools.com/uploaded_files/userfiles/files/roblox-how-get-animation-pack-free_GM431946152.pdfIn PDF document text
    • https://mawaridschools.com/uploaded_files/userfiles/files/tiktok-free-like_GM835599320.pdfIn PDF document text
    • https://mawaridschools.com/uploaded_files/userfiles/files/hacks-for-roblox-phantom-forces-2021_GM431946152.pdfIn PDF document text
    • https://mawaridschools.com/uploaded_files/userfiles/files/gear-in-roblox-free_GM431946152.pdfIn PDF document text
    • https://mawaridschools.com/uploaded_files/userfiles/files/free-robux-codes-2021_GM431946152.pdfIn PDF document text
    • https://mawaridschools.com/uploaded_files/userfiles/files/coin-master-free-gifts_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_002_off0000353e.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x353E 22488 bytes
SHA-256: 719bcfe82e6fea0685eebc04aa771be659134551220bad5958d3728c0445e345
font_01_sfnt_off00006755.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6755 18580 bytes
SHA-256: 9ee7f6e729eaa8ccfa60f836f488dcd9dbdf367b2dcb4736acc286b6369c8b6e

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