Malicious PDF — malware analysis report

Static analysis result for SHA-256 e6597ca81ee054a9…

MALICIOUS

PDF

43.0 KB Created: 2021-05-12 01:00:09 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: d518e98fd789dc4f3ad4f83eae3de9b7 SHA-1: 0c4ac91440957b4e88c4cf441dde8d1bf72e9b8a SHA-256: e6597ca81ee054a991133b1ead2eb7e5e084393db03b5248dcdf36c9c009b9d9
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links that redirect to malicious infrastructure, specifically advertising game hacks and free spins. The primary lure URL is https://netcdn.xyz/app/406889139/coin-master-free-spins-2021-game-hack, which is flagged as a malicious redirector. The document body and embedded links suggest a social engineering tactic to trick users into visiting potentially harmful websites.

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/coin-master-free-spins-2021-game-hack In PDF document text
    • http://lib.akpnbahtera.ac.id/repository/easy-ways-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.akpnbahtera.ac.id/repository/how-to-get-minecraft-coins-for-free_GM479516143.pdfIn PDF document text
    • http://lib.akpnbahtera.ac.id/repository/generator-robux_GM431946152.pdfIn PDF document text
    • http://lib.akpnbahtera.ac.id/repository/roblox-hack-tool_GM431946152.pdfIn PDF document text
    • http://lib.akpnbahtera.ac.id/repository/free-daily-coin-master-coins_GM406889139.pdfIn PDF document text
    • http://lib.akpnbahtera.ac.id/repository/free-coin-master-cards_GM406889139.pdfIn PDF document text
    • http://lib.akpnbahtera.ac.id/repository/8bp-hack-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.akpnbahtera.ac.id/repository/coin-master-free_GM406889139.pdfIn PDF document text
    • http://lib.akpnbahtera.ac.id/repository/coin-master-free-spins-app_GM406889139.pdfIn PDF document text
    • http://lib.akpnbahtera.ac.id/repository/coin-master-hack-apk_GM406889139.pdfIn PDF document text
    • http://lib.akpnbahtera.ac.id/repository/free-spins-coin-master-site-wwwquoracom_GM406889139.pdfIn PDF document text
    • http://lib.akpnbahtera.ac.id/repository/websites-for-robux_GM431946152.pdfIn PDF document text
    • http://lib.akpnbahtera.ac.id/repository/master-coin-free-spin-daily_GM406889139.pdfIn PDF document text
    • http://lib.akpnbahtera.ac.id/repository/free-spins-coin-master-2021-today_GM406889139.pdfIn PDF document text
    • http://lib.akpnbahtera.ac.id/repository/best-free-robux-sites_GM431946152.pdfIn PDF document text
    • http://lib.akpnbahtera.ac.id/repository/free-roblox-dominus_GM431946152.pdfIn PDF document text
    • http://lib.akpnbahtera.ac.id/repository/can-you-give-me-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.akpnbahtera.ac.id/repository/free-robux-hack-2021_GM431946152.pdfIn PDF document text
    • http://lib.akpnbahtera.ac.id/repository/robux-game-com_GM431946152.pdfIn PDF document text
    • http://lib.akpnbahtera.ac.id/repository/coin-master-card-collection-link_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_off000049d6.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x49D6 26552 bytes
SHA-256: d98475d317998f1ce4b6e3b1182d594e80a4934f700648e9b25d83bd15a7ec84
font_01_sfnt_off000085aa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x85AA 18288 bytes
SHA-256: 9f7609fba99e53c6baa99bb04d1c7e3f9b7167131c1520eb2a413cdab4a14871

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