Malicious PDF — malware analysis report

Static analysis result for SHA-256 ebe6393a52bc3b91…

MALICIOUS

PDF

47.1 KB Created: 2021-05-14 00:47:12 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 90c9e17eddd43e23a26a1571ea2104b4 SHA-1: 927aeddbca47666a779362bbc2e1ce8923f3e155 SHA-256: ebe6393a52bc3b911c8c72f3791967522e86c3bd30bc2457c469a454eda4e42f
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded links that redirect to a known malicious infrastructure. The document body and heuristics indicate a lure related to game hacks and free spins, designed to entice users to click the malicious links. The ML classifier also flagged this PDF as malicious, supporting the assessment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8948

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/free-spins-link-in-coin-master-2021-game-hack In PDF document text
    • https://www.arquetopia.org/images/coin-master-claim-spins_GM406889139.pdfIn PDF document text
    • https://www.arquetopia.org/images/how-to-hack-coin-master-apple_GM406889139.pdfIn PDF document text
    • https://www.arquetopia.org/images/apk-hack-coin-master_GM406889139.pdfIn PDF document text
    • https://www.arquetopia.org/images/bux-life-free-robux_GM431946152.pdfIn PDF document text
    • https://www.arquetopia.org/images/coin-master-free-spins-link-ios_GM406889139.pdfIn PDF document text
    • https://www.arquetopia.org/images/mcpe-master-hack-coin-apk_GM406889139.pdfIn PDF document text
    • https://www.arquetopia.org/images/robux-generator-com_GM431946152.pdfIn PDF document text
    • https://www.arquetopia.org/images/ww-roblox-come_GM431946152.pdfIn PDF document text
    • https://www.arquetopia.org/images/roblox-free-vip-server_GM431946152.pdfIn PDF document text
    • https://www.arquetopia.org/images/robux-websites-that-work_GM431946152.pdfIn PDF document text
    • https://www.arquetopia.org/images/coin-master-apk-hack_GM406889139.pdfIn PDF document text
    • https://www.arquetopia.org/images/cm-free-spins_GM406889139.pdfIn PDF document text
    • https://www.arquetopia.org/images/coin-master-time-hack-ios_GM406889139.pdfIn PDF document text
    • https://www.arquetopia.org/images/hack-coin-master-android-2021_GM406889139.pdfIn PDF document text
    • https://www.arquetopia.org/images/free-robux-mod_GM431946152.pdfIn PDF document text
    • https://www.arquetopia.org/images/coin-master-free-daily-spins-and-coins_GM406889139.pdfIn PDF document text
    • https://www.arquetopia.org/images/how-to-get-minecraft-for-free-ios_GM479516143.pdfIn PDF document text
    • https://www.arquetopia.org/images/how-to-get-minecraft-on-chromebook-for-free_GM479516143.pdfIn PDF document text
    • https://www.arquetopia.org/images/login-robux_GM431946152.pdfIn PDF document text
    • https://www.arquetopia.org/images/coin-master-spin-link-hack_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004923.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4923 24780 bytes
SHA-256: 59307c16a689cca1928b290c5c6258fc707c7e1f82ced82073a1cafbbf85dddf
font_01_sfnt_off000080a1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x80A1 8676 bytes
SHA-256: e06aca5f85e50ae6cefda302c5299c18ab6d27c174f74f0bb0ee8efa7ccb4468
font_02_sfnt_off0000952c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x952C 18456 bytes
SHA-256: 8f5be0faf1f43547a4f613946690c49555a623d75ecb5c591eda2449b2cabce1

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