Malicious PDF — malware analysis report

Static analysis result for SHA-256 ebec3a1b7be2f3da…

MALICIOUS

PDF

40.0 KB Created: 2021-05-13 14:43:21 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: dbe97d07a9edbab0e4fa143d9df486b0 SHA-1: d4b0141e676d217160b3aee6cbaf9f69f1bf4428 SHA-256: ebec3a1b7be2f3dab10828102218ba01e73ca44d0be03e4d0fc91b1cfe65b3c4
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains links that redirect to known malicious infrastructure, specifically promoting 'game hacks' and free currency. The document body, though partially corrupted, contains a URL that aligns with the heuristic findings of a redirector lure. While no scripts were explicitly extracted, the PDF format itself can embed JavaScript, and the presence of malicious links suggests an attempt to lead the user to a compromised site or download further malicious content.

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/406889139/hack-coins-in-coin-master-game-hack In PDF document text
    • http://bgnails.nl/images/free-coins-and-spins-2021_GM406889139.pdfIn PDF document text
    • http://bgnails.nl/images/roblox-studio-free-robux_GM431946152.pdfIn PDF document text
    • http://bgnails.nl/images/minecraft-free-download-apk-softonic_GM479516143.pdfIn PDF document text
    • http://bgnails.nl/images/how-to-get-free-coins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://bgnails.nl/images/coin-master-daily-gift-free-spins-and-coins-link_GM406889139.pdfIn PDF document text
    • http://bgnails.nl/images/how-to-get-free-spins-and-coins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://bgnails.nl/images/rbx-gg-free-robux_GM431946152.pdfIn PDF document text
    • http://bgnails.nl/images/coin-master-free-gold-cards-link-2021_GM406889139.pdfIn PDF document text
    • http://bgnails.nl/images/coin-master-free-stuff_GM406889139.pdfIn PDF document text
    • http://bgnails.nl/images/coin-master-raid-hack_GM406889139.pdfIn PDF document text
    • http://bgnails.nl/images/free-coins-and-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://bgnails.nl/images/free-roebucks-com_GM431946152.pdfIn PDF document text
    • http://bgnails.nl/images/free-robux-working_GM431946152.pdfIn PDF document text
    • http://bgnails.nl/images/free-spins-for-coin-master-game_GM406889139.pdfIn PDF document text
    • http://bgnails.nl/images/coin-master-2021-free-spins-link-blogspot_GM406889139.pdfIn PDF document text
    • http://bgnails.nl/images/free-2021-robux_GM431946152.pdfIn PDF document text
    • http://bgnails.nl/images/robux-codes_GM431946152.pdfIn PDF document text
    • http://bgnails.nl/images/claimrobux-net_GM431946152.pdfIn PDF document text
    • http://bgnails.nl/images/coin-master-heaven-free-spins-today_GM406889139.pdfIn PDF document text
    • http://bgnails.nl/images/how-to-get-minecraft-for-free_GM479516143.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_off00004639.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4639 23588 bytes
SHA-256: 358a76a4a1c128b34f75cf6958aced0d34c4349c70e9577297cb00dbfb3398f4
font_01_sfnt_off00007b9d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7B9D 17716 bytes
SHA-256: d6326db3ec99cd4100037f6b174e8e4c98e0cb74152143630739ed649c35c1c8

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