Malicious PDF — malware analysis report

Static analysis result for SHA-256 8567057d1ad01e93…

MALICIOUS

PDF

56.7 KB Created: 2021-05-16 02:37:20 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 467280c73dec37a8c893a19117a53695 SHA-1: 6382998740117a56b23fc040c73f575a59b58193 SHA-256: 8567057d1ad01e938aaf8532baaa3bb6bdd118fb02fc2ec0bded606e7474f4de
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links to known malicious redirectors and websites offering game hacks, indicating a phishing or scam attempt. The document body and embedded links suggest a lure for popular games like Coin Master and Roblox. While no scripts were directly extracted, the nature of the links and the heuristic firings strongly suggest the intent is to redirect users to potentially malicious sites that may host further malware or engage in credential harvesting.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8167

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.xyz/app/406889139/coin-master-daily-free-spins-and-coins-2021-game-hack In PDF document text
    • https://c2o-library.net/catalog/repository/coin-master-free-spins-for-today_GM406889139.pdfIn PDF document text
    • https://c2o-library.net/catalog/repository/dailyrobux_GM431946152.pdfIn PDF document text
    • https://c2o-library.net/catalog/repository/minecraft-windows-10-free_GM479516143.pdfIn PDF document text
    • https://c2o-library.net/catalog/repository/monttechscom-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • https://c2o-library.net/catalog/repository/mobihack-net-roblox-hack_GM431946152.pdfIn PDF document text
    • https://c2o-library.net/catalog/repository/free-spins-coin-master-app-iphone_GM406889139.pdfIn PDF document text
    • https://c2o-library.net/catalog/repository/coin-master-heaven-free-spins-link_GM406889139.pdfIn PDF document text
    • https://c2o-library.net/catalog/repository/free-gfx-roblox_GM431946152.pdfIn PDF document text
    • https://c2o-library.net/catalog/repository/free-robux-giveaway_GM431946152.pdfIn PDF document text
    • https://c2o-library.net/catalog/repository/how-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • https://c2o-library.net/catalog/repository/free-roblox-hack_GM431946152.pdfIn PDF document text
    • https://c2o-library.net/catalog/repository/give-free-robux_GM431946152.pdfIn PDF document text
    • https://c2o-library.net/catalog/repository/roblox-fun-robux_GM431946152.pdfIn PDF document text
    • https://c2o-library.net/catalog/repository/free-robux-real_GM431946152.pdfIn PDF document text
    • https://c2o-library.net/catalog/repository/how-to-find-coin-master-free-spin-link_GM406889139.pdfIn PDF document text
    • https://c2o-library.net/catalog/repository/2021-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://c2o-library.net/catalog/repository/free-spin-coin-master-instagram_GM406889139.pdfIn PDF document text
    • https://c2o-library.net/catalog/repository/free-spin-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://c2o-library.net/catalog/repository/free-2021-robux_GM431946152.pdfIn PDF document text
    • https://c2o-library.net/catalog/repository/how-to-get-minecraft-java-for-free_GM479516143.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004ef2.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4EF2 26356 bytes
SHA-256: 76894144b3b59317c91af569ef3bc2326f5d406d73f34439b9e4168ada765142
font_01_sfnt_off00008cca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8CCA 3088 bytes
SHA-256: e7854aff7cbc8fbdeb85d2b3d6248d12dc820ede8a581f4eac107fa6446c2222
font_02_sfnt_off00009795.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9795 7960 bytes
SHA-256: cf7ae5cf6bef3222f5a26bec705b492fed0278aec6b16ec101aeda46e0edd2b2
font_03_sfnt_off0000aabb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAABB 18884 bytes
SHA-256: 183333dfce930995a9382150b407cb528e1a5d3dc22f511d9bca322a4b29e614
font_04_sfnt_off0000ceb6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCEB6 4272 bytes
SHA-256: fac9a06ceb5574feb8580c075df3ef69dfbd0efa4947186cfe90f11b68eaafb0

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