Malicious PDF — malware analysis report

Static analysis result for SHA-256 6e8ff12f6215b041…

MALICIOUS

PDF

34.0 KB Created: 2021-07-05 12:20:04 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: be65e462fe0761e891a6c748ad90d602 SHA-1: ee16beaf5ac3da76b09b20c76c7cd004ad8ed144 SHA-256: 6e8ff12f6215b04119246f713bf333d94993ab6c5afc19a63cf54c23250a4131
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to a redirector URL that is flagged as malicious, specifically promoting 'free generators' and 'game hacks' for popular games like Coin Master and Minecraft. The document body and embedded URLs strongly suggest a phishing or scam attempt to lure users to malicious sites. The ML classifier also flagged this PDF as malicious with high confidence.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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 http://netcdn.tw/app/406889139/coin-master-spin-hack-app-game-hack In PDF document text
    • http://lib.uho.ac.id/library/repository/f-r-e-e-that-spells-free-roblox-id_GM431946152.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/minecraft-dungeons-free_GM479516143.pdfIn PDF document text
    • http://lib.uho.ac.id/library//repository/free-robux-generator-2021-no-survey_GM431946152.pdfIn PDF document text
    • http://lib.uho.ac.id/library//repository/coin-master-hack-apk_GM406889139.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/minecraft-for-ps3-free_GM479516143.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/cm-spin-link_GM406889139.pdfIn PDF document text
    • http://lib.uho.ac.id/library//repository/coin-master-hack-8-ball-pool_GM406889139.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/free-coin-master-spins-for-today_GM406889139.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/how-to-hack-roblox-tycoon-hack_GM431946152.pdfIn PDF document text
    • http://lib.uho.ac.id/library//repository/coin-master-tips_GM406889139.pdfIn PDF document text
    • http://lib.uho.ac.id/library//repository/roblox-hack-generator_GM431946152.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/minecraft-ps3-free-download_GM479516143.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/how-to-hack-a-minecraft-account_GM479516143.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/coin-master-free-coins-link-2021-deutsch_GM406889139.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/coin-master-free-spins-app_GM406889139.pdfIn PDF document text
    • http://lib.uho.ac.id/library//repository/mcpe-master-hack-coin-apk_GM406889139.pdfIn PDF document text
    • http://lib.uho.ac.id/library//repository/coin-master-free-spins-haktuts_GM406889139.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/best-free-robux-sites_GM431946152.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/get-free-tiktok-followers_GM835599320.pdfIn PDF document text
    • http://lib.uho.ac.id/library//repository/how-to-o-get-free-coin-master-spins_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_002_off00002fb6.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2FB6 22656 bytes
SHA-256: 4d04194b84ad1de2e36636f0c955b21d5220b2336a5413f8b991ae6ba3d1b2aa
font_01_sfnt_off00006255.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6255 18180 bytes
SHA-256: eeaf9fe1c7e6789caefc07d53c000bb69e844de2835645c48fad05e1619410a4

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