Malicious PDF — malware analysis report

Static analysis result for SHA-256 be5a9d8efa181b49…

MALICIOUS

PDF

41.6 KB Created: 2021-05-14 05:15:10 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 8dbaccb0271883c2865046eff742456f SHA-1: a66aaa4cbd19b4efa1f06f6e312ad39f06554304 SHA-256: be5a9d8efa181b49f58aa1440ffed6ec52a437e9b68e8208b5db544dd58e4a0f
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded links that lead to game hack generators and known malicious redirectors, as indicated by the 'PDF_GAME_HACK_REDIRECT_LURE' and 'PDF_MALICIOUS_REDIRECTOR_LINK' heuristics. The document body, though partially corrupted, contains references to 'Coin Master Hack Blog' and other game-related lures, suggesting a phishing or scam attempt. The ML classifier also strongly flagged this PDF as malicious.

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-hack-blog-game-hack In PDF document text
    • http://butkimloai.com/images/coin-master-server-hack_GM406889139.pdfIn PDF document text
    • http://butkimloai.com/images/free-coin-master-spins-without-human-verification_GM406889139.pdfIn PDF document text
    • http://butkimloai.com/images/free-robux-reddit_GM431946152.pdfIn PDF document text
    • http://butkimloai.com/images/tiktok-minecraft-hacks_GM479516143.pdfIn PDF document text
    • http://butkimloai.com/images/coin-master-apk-free-download_GM406889139.pdfIn PDF document text
    • http://butkimloai.com/images/rbxcity-free-robux_GM431946152.pdfIn PDF document text
    • http://butkimloai.com/images/hacks-for-minecraft-windows-10_GM479516143.pdfIn PDF document text
    • http://butkimloai.com/images/make-free-robux_GM431946152.pdfIn PDF document text
    • http://butkimloai.com/images/legit-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://butkimloai.com/images/coin-master-daily-spin-free_GM406889139.pdfIn PDF document text
    • http://butkimloai.com/images/coin-master-hack-mod-apk-2021_GM406889139.pdfIn PDF document text
    • http://butkimloai.com/images/roblox-free-robux-no-verification_GM431946152.pdfIn PDF document text
    • http://butkimloai.com/images/minecraft-java-account-free_GM479516143.pdfIn PDF document text
    • http://butkimloai.com/images/how-to-hack-coin-master_GM406889139.pdfIn PDF document text
    • http://butkimloai.com/images/coinmaster-com_GM406889139.pdfIn PDF document text
    • http://butkimloai.com/images/free-roblox-accounts-with-robux_GM431946152.pdfIn PDF document text
    • http://butkimloai.com/images/free-coin-coin-master_GM406889139.pdfIn PDF document text
    • http://butkimloai.com/images/coin-master-attack-hack_GM406889139.pdfIn PDF document text
    • http://butkimloai.com/images/free-coin-link-coin-master_GM406889139.pdfIn PDF document text
    • http://butkimloai.com/images/daily-spin-and-coin_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_off0000486a.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x486A 24880 bytes
SHA-256: 1bee024e38b137047870c83920e17819f485bf098c7671cc2ad8ac0a6d4aba16
font_01_sfnt_off00008006.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8006 18292 bytes
SHA-256: 22b0b225586be0ab641070019fb62ecee061fdecfd03887ecf7d2eac6b46cbad

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