Malicious PDF — malware analysis report

Static analysis result for SHA-256 f1cefe76cfab3522…

MALICIOUS

PDF

43.6 KB Created: 2021-05-10 18:30:36 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 7cbaf32c03e09b8ab65599e2fc41cbd3 SHA-1: df0000cdc7ec84ca3e94a2a5589a97b3f6cf1ddc SHA-256: f1cefe76cfab35220afd703f131167eb7d9d171d50bc0b89b4293e45fbcc348a
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to known malicious redirector infrastructure, specifically promoting 'game hacks' and 'free spins' to lure users. The primary malicious URL identified is https://netcdn.xyz/app/406889139/haktuts-coin-master-free-daily-spins-game-hack. While no scripts were explicitly extracted, the PDF structure and embedded links strongly indicate a phishing or redirection attack, likely intended to lead users to further malicious content or downloads.

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/haktuts-coin-master-free-daily-spins-game-hack In PDF document text
    • http://digilib-unirow.ac.id/repository/100-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://digilib-unirow.ac.id/repository/coin-master-hack-https-coinms-net_GM406889139.pdfIn PDF document text
    • http://digilib-unirow.ac.id/repository/daily-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://digilib-unirow.ac.id/repository/coin-master-free-link-today_GM406889139.pdfIn PDF document text
    • http://digilib-unirow.ac.id/repository/spin-rewards-coin-master_GM406889139.pdfIn PDF document text
    • http://digilib-unirow.ac.id/repository/minecraft-hacks-xbox_GM479516143.pdfIn PDF document text
    • http://digilib-unirow.ac.id/repository/coin-master-hack-no-download_GM406889139.pdfIn PDF document text
    • http://digilib-unirow.ac.id/repository/how-to-get-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • http://digilib-unirow.ac.id/repository/coin-master-mod-apk-unlimited-spin-download-free-full-version_GM406889139.pdfIn PDF document text
    • http://digilib-unirow.ac.id/repository/free-minecraft-java-account_GM479516143.pdfIn PDF document text
    • http://digilib-unirow.ac.id/repository/roblox-18_GM431946152.pdfIn PDF document text
    • http://digilib-unirow.ac.id/repository/coin-master-heaven-free-spins-today_GM406889139.pdfIn PDF document text
    • http://digilib-unirow.ac.id/repository/free-robux-codes-2021_GM431946152.pdfIn PDF document text
    • http://digilib-unirow.ac.id/repository/www-rubux_GM431946152.pdfIn PDF document text
    • http://digilib-unirow.ac.id/repository/coin-master-free-spins-apk-2021_GM406889139.pdfIn PDF document text
    • http://digilib-unirow.ac.id/repository/how-to-hack-roblox_GM431946152.pdfIn PDF document text
    • http://digilib-unirow.ac.id/repository/how-to-get-free-coins-in-coin-master_GM406889139.pdfIn PDF document text
    • http://digilib-unirow.ac.id/repository/strucid-aimbot_GM431946152.pdfIn PDF document text
    • http://digilib-unirow.ac.id/repository/blox-pink-robux-free_GM431946152.pdfIn PDF document text
    • http://digilib-unirow.ac.id/repository/coin-master-free-spins-coins_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_off00004a8a.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4A8A 26584 bytes
SHA-256: fec3b39a681761f87e0bdbcf57e86a3bd497d03cb44db01389143293b350e7e9
font_01_sfnt_off0000877e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x877E 18620 bytes
SHA-256: ded7de44f7a870837d4ef416985ae0b9ef78dce3540f45b1558d033e63b05ca7

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