Malicious PDF — malware analysis report

Static analysis result for SHA-256 e72fea1445b9ceb4…

MALICIOUS

PDF

43.5 KB Created: 2021-06-04 02:23:45 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: c7ac5e7665ac012f54765d43cbb3ac40 SHA-1: 7cf6456c26bb6c66c101f9de988fbf6b57c13017 SHA-256: e72fea1445b9ceb48a9495a1fe4835b2cafb70466be6d6844897a1ea2f899e0d
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to a known malicious redirector, disguised as game hacks and generators. The primary lure URL is https://netcdn.online/app/406889139/coin-master-spin-hack-2021-game-hack, which is associated with malicious redirector infrastructure. The document body and heuristics indicate a social engineering tactic to trick users into visiting these malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9865

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.online/app/406889139/coin-master-spin-hack-2021-game-hack In PDF document text
    • http://library.umla.ac.id//repository/best-free-minecraft-hacked-client_GM479516143.pdfIn PDF document text
    • http://library.umla.ac.id/repository/coin-master-free-spin-and-coin-link-haktuts-hacking-news_GM406889139.pdfIn PDF document text
    • http://library.umla.ac.id/repository/april-1st-hack-roblox_GM431946152.pdfIn PDF document text
    • http://library.umla.ac.id/repository/roblox-apocalypse-rising-hack_GM431946152.pdfIn PDF document text
    • http://library.umla.ac.id/repository/free-robux-generator-2021_GM431946152.pdfIn PDF document text
    • http://library.umla.ac.id//repository/coin-master-coins-free_GM406889139.pdfIn PDF document text
    • http://library.umla.ac.id/repository/what-is-robux_GM431946152.pdfIn PDF document text
    • http://library.umla.ac.id//repository/free-robux-real_GM431946152.pdfIn PDF document text
    • http://library.umla.ac.id//repository/how-to-get-free-robux-easy-hack_GM431946152.pdfIn PDF document text
    • http://library.umla.ac.id/repository/rewards-robux_GM431946152.pdfIn PDF document text
    • http://library.umla.ac.id/repository/cheats-coin-master-free_GM406889139.pdfIn PDF document text
    • http://library.umla.ac.id//repository/minecraft-windows-10-free-with-java_GM479516143.pdfIn PDF document text
    • http://library.umla.ac.id/repository/coin-master-hack-ios-no-jailbreak_GM406889139.pdfIn PDF document text
    • http://library.umla.ac.id/repository/hacks-master-coin_GM406889139.pdfIn PDF document text
    • http://library.umla.ac.id/repository/totally-free-coin-master-spins-2021_GM406889139.pdfIn PDF document text
    • http://library.umla.ac.id/repository/coin-master-cheats-2021_GM406889139.pdfIn PDF document text
    • http://library.umla.ac.id//repository/try-minecraft-free_GM479516143.pdfIn PDF document text
    • http://library.umla.ac.id//repository/coin-master-instagram-free-spins_GM406889139.pdfIn PDF document text
    • http://library.umla.ac.id//repository/free-minecraft-server-maker_GM479516143.pdfIn PDF document text
    • http://library.umla.ac.id//repository/coin-master-tiradas-gratis-2021_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_004_off00005066.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5066 23996 bytes
SHA-256: 5b8f93f44c4f210361f95e48083fa02e3ded7fea4259252a61cfbe3f938524a8
font_01_sfnt_off0000872d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x872D 18296 bytes
SHA-256: eaa60ab3b9dbdc46d7aef4d77b4227c1d0aeb4180c3635ae77be6ae4ebf58c24

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