Malicious PDF — malware analysis report

Static analysis result for SHA-256 3c7702ebe60a05c0…

MALICIOUS

PDF

43.6 KB Created: 2021-05-14 19:18:20 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 720d279a75302665081a8169c57c9431 SHA-1: 26c26ad91720a833c1e013511d9d0d9741210535 SHA-256: 3c7702ebe60a05c0d592b277ae3132e8ea080ace27fe1e2e3ca56bad7aa8e9ba
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to redirector infrastructure, specifically promoting 'game hacks' and 'free spins' for popular games. The primary malicious URL identified is https://netcdn.xyz/app/406889139/20210-free-spin-links-for-coin-master-game-hack, which is flagged as a known malicious redirector. While no scripts were explicitly extracted, the PDF structure and embedded URLs suggest an attempt to redirect the user to a malicious site, likely for further exploitation or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9969

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/406889139/20210-free-spin-links-for-coin-master-game-hack In PDF document text
    • http://belajar.mtsnurulhudamangunsari.sch.id/__statics/gudangsoal/files/windows-10-minecraft-hacks_GM479516143.pdfIn PDF document text
    • http://belajar.mtsnurulhudamangunsari.sch.id/__statics/gudangsoal/files/coin-master-free-coins-2021_GM406889139.pdfIn PDF document text
    • http://belajar.mtsnurulhudamangunsari.sch.id/__statics/gudangsoal/files/coin-master-free-spins-link-app-download_GM406889139.pdfIn PDF document text
    • http://belajar.mtsnurulhudamangunsari.sch.id/__statics/gudangsoal/files/funbloxxyz-free-robux_GM431946152.pdfIn PDF document text
    • http://belajar.mtsnurulhudamangunsari.sch.id/__statics/gudangsoal/files/free-robux-pastebin_GM431946152.pdfIn PDF document text
    • http://belajar.mtsnurulhudamangunsari.sch.id/__statics/gudangsoal/files/coin-master-hack-ios-app_GM406889139.pdfIn PDF document text
    • http://belajar.mtsnurulhudamangunsari.sch.id/__statics/gudangsoal/files/robux-hack-no-human-verification_GM431946152.pdfIn PDF document text
    • http://belajar.mtsnurulhudamangunsari.sch.id/__statics/gudangsoal/files/coin-master-app-hacks_GM406889139.pdfIn PDF document text
    • http://belajar.mtsnurulhudamangunsari.sch.id/__statics/gudangsoal/files/how-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://belajar.mtsnurulhudamangunsari.sch.id/__statics/gudangsoal/files/free-minecraft-bedrock-server_GM479516143.pdfIn PDF document text
    • http://belajar.mtsnurulhudamangunsari.sch.id/__statics/gudangsoal/files/links-to-get-free-coins-in-coin-master_GM406889139.pdfIn PDF document text
    • http://belajar.mtsnurulhudamangunsari.sch.id/__statics/gudangsoal/files/free-coin-master-spins-for-today_GM406889139.pdfIn PDF document text
    • http://belajar.mtsnurulhudamangunsari.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-no-verification_GM431946152.pdfIn PDF document text
    • http://belajar.mtsnurulhudamangunsari.sch.id/__statics/gudangsoal/files/free-robux-earn_GM431946152.pdfIn PDF document text
    • http://belajar.mtsnurulhudamangunsari.sch.id/__statics/gudangsoal/files/coin-master-free-spins-link-2021_GM406889139.pdfIn PDF document text
    • http://belajar.mtsnurulhudamangunsari.sch.id/__statics/gudangsoal/files/free-robux-generator-2021_GM431946152.pdfIn PDF document text
    • http://belajar.mtsnurulhudamangunsari.sch.id/__statics/gudangsoal/files/free-spins-for-coin-master-game_GM406889139.pdfIn PDF document text
    • http://belajar.mtsnurulhudamangunsari.sch.id/__statics/gudangsoal/files/free-roblox-accessories_GM431946152.pdfIn PDF document text
    • http://belajar.mtsnurulhudamangunsari.sch.id/__statics/gudangsoal/files/android-coin-master-3433-apk-hack_GM406889139.pdfIn PDF document text
    • http://belajar.mtsnurulhudamangunsari.sch.id/__statics/gudangsoal/files/try-coin-master-hack_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_off00005043.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5043 24172 bytes
SHA-256: ca06f9bb731e66d4547fb4291012add9c5467f267baba7a546f49d4e14ca346e
font_01_sfnt_off000087b9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x87B9 18456 bytes
SHA-256: 0c2189e6946270650e490ca98f5793093c0c1550cf94812332a81fc346291d18

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