Malicious PDF — malware analysis report

Static analysis result for SHA-256 ed635b0106396e5b…

MALICIOUS

PDF

42.5 KB Created: 2021-05-12 23:43:17 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 5d301d8c599642a3ec2a8ef2c24c1eee SHA-1: 4bf81d76b98cddfc3fd6882273b9286e33b55a90 SHA-256: ed635b0106396e5b149b8339f2ac00a1b75988893401dcdb92ea577e1bcd519d
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links that redirect to malicious infrastructure, specifically promoting 'game hacks' and 'free generators'. The ML classifier also flagged this PDF as malicious. The embedded URLs are designed to lure users into clicking, likely leading to further malicious content or downloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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/431946152/games-that-give-you-free-robux-game-hack In PDF document text
    • https://www.arquetopia.org/images/cm-free-spins_GM406889139.pdfIn PDF document text
    • https://www.arquetopia.org/images/coin-master-hack-link_GM406889139.pdfIn PDF document text
    • https://www.arquetopia.org/images/roblox-games-with-free-radio_GM431946152.pdfIn PDF document text
    • https://www.arquetopia.org/images/free-coins-coin-master-link_GM406889139.pdfIn PDF document text
    • https://www.arquetopia.org/images/coin-master-fun-hack-online_GM406889139.pdfIn PDF document text
    • https://www.arquetopia.org/images/robux-hack-2021_GM431946152.pdfIn PDF document text
    • https://www.arquetopia.org/images/free-robux-today_GM431946152.pdfIn PDF document text
    • https://www.arquetopia.org/images/coin-master-apk-mod-free-download_GM406889139.pdfIn PDF document text
    • https://www.arquetopia.org/images/free-robux-group_GM431946152.pdfIn PDF document text
    • https://www.arquetopia.org/images/ww-roblox-come_GM431946152.pdfIn PDF document text
    • https://www.arquetopia.org/images/coin-master-free-daily-spins_GM406889139.pdfIn PDF document text
    • https://www.arquetopia.org/images/coin-master-free-spins-and-free-coins_GM406889139.pdfIn PDF document text
    • https://www.arquetopia.org/images/coin-master-hack-spins-2021_GM406889139.pdfIn PDF document text
    • https://www.arquetopia.org/images/free-spin-coin-master-online_GM406889139.pdfIn PDF document text
    • https://www.arquetopia.org/images/how-to-get-free-spins-on-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://www.arquetopia.org/images/latest-coin-master-free-spins-link_GM406889139.pdfIn PDF document text
    • https://www.arquetopia.org/images/coin-master-hack-2021-no-survey_GM406889139.pdfIn PDF document text
    • https://www.arquetopia.org/images/coin-master-hacks-2021_GM406889139.pdfIn PDF document text
    • https://www.arquetopia.org/images/roblox-play-as-guest-free_GM431946152.pdfIn PDF document text
    • https://www.arquetopia.org/images/free-coins-and-spins-for-coin-master-game_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_003_off000046b9.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x46B9 25308 bytes
SHA-256: a704d6e607019049c4cd9eabb6ccca323aa426391ff120d2083ddce4076bb16b
font_01_sfnt_off000080ff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x80FF 19168 bytes
SHA-256: c4d6735542cd49b50f18b2921f89e54fe5d8ee4af3f47c61005942af246faebd

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