Malicious PDF — malware analysis report

Static analysis result for SHA-256 6b4712e0981dcc97…

MALICIOUS

PDF

46.8 KB Created: 2021-05-11 07:21:17 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: dd62c20b86af6c4b488d6269435ab11b SHA-1: c5fa3ac636f398eba7cd49996e19434f2a710116 SHA-256: 6b4712e0981dcc977ed6c96a7c1b70f9b7171573372c2ebe802f1a592e4e2c63
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF contains multiple links to known malicious redirectors, specifically advertising 'game hacks' and 'free generators'. The ML classifier also flagged this PDF as malicious. The presence of these links strongly suggests an attempt to lure the user to sites that likely host malware or phishing content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8948

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/hacker-coin-master-game-hack In PDF document text
    • https://e-learningmin19jkt.com/__statics/gudangsoal/files/coin-master-hack-pc-download_GM406889139.pdfIn PDF document text
    • https://e-learningmin19jkt.com/__statics/gudangsoal/files/games-that-give-you-free-robux_GM431946152.pdfIn PDF document text
    • https://e-learningmin19jkt.com/__statics/gudangsoal/files/free-roblox-groups-with-funds_GM431946152.pdfIn PDF document text
    • https://e-learningmin19jkt.com/__statics/gudangsoal/files/free-robux-generator-no-human-verification-or-survey-2021_GM431946152.pdfIn PDF document text
    • https://e-learningmin19jkt.com/__statics/gudangsoal/files/how-to-get-free-robux-without-paying_GM431946152.pdfIn PDF document text
    • https://e-learningmin19jkt.com/__statics/gudangsoal/files/coin-master-free-spins-a2z-help_GM406889139.pdfIn PDF document text
    • https://e-learningmin19jkt.com/__statics/gudangsoal/files/www-bandicam-com-free-robux_GM431946152.pdfIn PDF document text
    • https://e-learningmin19jkt.com/__statics/gudangsoal/files/how-to-get-free-robux-no-survey_GM431946152.pdfIn PDF document text
    • https://e-learningmin19jkt.com/__statics/gudangsoal/files/coin-and-spin_GM406889139.pdfIn PDF document text
    • https://e-learningmin19jkt.com/__statics/gudangsoal/files/free-robux-generator-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • https://e-learningmin19jkt.com/__statics/gudangsoal/files/how-to-use-redstone_GM479516143.pdfIn PDF document text
    • https://e-learningmin19jkt.com/__statics/gudangsoal/files/coin-master-cheat-engine-hack_GM406889139.pdfIn PDF document text
    • https://e-learningmin19jkt.com/__statics/gudangsoal/files/android-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://e-learningmin19jkt.com/__statics/gudangsoal/files/free-rewards-coin-master_GM406889139.pdfIn PDF document text
    • https://e-learningmin19jkt.com/__statics/gudangsoal/files/free-minecraft-realm-codes_GM479516143.pdfIn PDF document text
    • https://e-learningmin19jkt.com/__statics/gudangsoal/files/spin-coin-master-free_GM406889139.pdfIn PDF document text
    • https://e-learningmin19jkt.com/__statics/gudangsoal/files/roblox-free-exploits_GM431946152.pdfIn PDF document text
    • https://e-learningmin19jkt.com/__statics/gudangsoal/files/get-2021-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://e-learningmin19jkt.com/__statics/gudangsoal/files/free-robux-generator-no-human-verification_GM431946152.pdfIn PDF document text
    • https://e-learningmin19jkt.com/__statics/gudangsoal/files/haktuts-2021-coin-master-free-spin-link_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004941.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4941 24536 bytes
SHA-256: 945f8991851824706c0fa9ff59dc08138c59b8d8c2aa32ca5fd4c56333c7a5f8
font_01_sfnt_off000081aa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x81AA 8676 bytes
SHA-256: e06aca5f85e50ae6cefda302c5299c18ab6d27c174f74f0bb0ee8efa7ccb4468
font_02_sfnt_off00009634.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9634 17716 bytes
SHA-256: b7a59136220e75e7377c9f6e3a7c38a497a32d42f46ea76588eb807573971af5

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