Malicious PDF — malware analysis report

Static analysis result for SHA-256 0734c6911438247c…

MALICIOUS

PDF

44.5 KB Created: 2021-06-04 00:14:20 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: df2584bc64273dad6c42acea42ce550d SHA-1: c912236b6f96a9d7e6faaabb8a703865d73c4197 SHA-256: 0734c6911438247cc714b15b76c68c8f2f700a94c87baed746f203f75ad5fa70
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains multiple links to known malicious redirectors and lures users with 'game hack' content. The primary link, https://netcdn.online/app/406889139/coin-master-spins-hack-2021-game-hack, is presented as a 'free generator' and likely leads to a second-stage payload download. The document body, though partially corrupted, reinforces this lure with similar phrasing.

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-spins-hack-2021-game-hack In PDF document text
    • http://lc.pustaka.unand.ac.id/repository/coin-master-hack-no-human-verification_GM406889139.pdfIn PDF document text
    • http://lc.pustaka.unand.ac.id/repository/coin-master-hack-app-for-ios_GM406889139.pdfIn PDF document text
    • http://lc.pustaka.unand.ac.id/repository/coin-master-free-spin-daily-link_GM406889139.pdfIn PDF document text
    • http://lc.pustaka.unand.ac.id/repository/hack-coin-master-dzooka_GM406889139.pdfIn PDF document text
    • http://lc.pustaka.unand.ac.id/repository/minecraft-ps4-code-free_GM479516143.pdfIn PDF document text
    • http://lc.pustaka.unand.ac.id/repository/roblox-com-hack_GM431946152.pdfIn PDF document text
    • http://lc.pustaka.unand.ac.id/repository/play-games-for-robux_GM431946152.pdfIn PDF document text
    • http://lc.pustaka.unand.ac.id/repository/free-money-and-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://lc.pustaka.unand.ac.id/repository/free-roblox-generator_GM431946152.pdfIn PDF document text
    • http://lc.pustaka.unand.ac.id/repository/coin-master-email-rewards-link_GM406889139.pdfIn PDF document text
    • http://lc.pustaka.unand.ac.id/repository/get-free-robux-com_GM431946152.pdfIn PDF document text
    • http://lc.pustaka.unand.ac.id/repository/free-spins-and-coins-for-coin-master-game_GM406889139.pdfIn PDF document text
    • http://lc.pustaka.unand.ac.id/repository/free-robux-just-enter-username-and-password_GM431946152.pdfIn PDF document text
    • http://lc.pustaka.unand.ac.id/repository/get-free-robux-generator_GM431946152.pdfIn PDF document text
    • http://lc.pustaka.unand.ac.id/repository/free-robux-codes_GM431946152.pdfIn PDF document text
    • http://lc.pustaka.unand.ac.id/repository/how-to-get-free-robux-without-verification_GM431946152.pdfIn PDF document text
    • http://lc.pustaka.unand.ac.id/repository/coin-master-free-spins-and-free-coins_GM406889139.pdfIn PDF document text
    • http://lc.pustaka.unand.ac.id/repository/earn-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://lc.pustaka.unand.ac.id/repository/free-robux-websites-that-work_GM431946152.pdfIn PDF document text
    • http://lc.pustaka.unand.ac.id/repository/roblox-girl-avatar_GM431946152.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_off00004d36.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4D36 27608 bytes
SHA-256: 53d38ccf09e3764a7e3fb650ba3e460211526fdd49325957134e8ecd8307a341
font_01_sfnt_off00008b15.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8B15 18296 bytes
SHA-256: eaa60ab3b9dbdc46d7aef4d77b4227c1d0aeb4180c3635ae77be6ae4ebf58c24