Malicious PDF — malware analysis report

Static analysis result for SHA-256 e8413d70c0227de8…

MALICIOUS

PDF

34.7 KB Created: 2021-07-05 01:52:42 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 6dc3fb87e767f20e1ccbfa042d002552 SHA-1: 3ed896a76a2ce3b417ab872651fd575c850b78a2 SHA-256: e8413d70c0227de8f43ba189a077c6ca4cb75152c392662f7965385bf9fe03cf
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a critical heuristic firing for a game hack redirect lure, pointing to malicious infrastructure. The document body and embedded URLs reinforce this, indicating a phishing attempt to trick users into visiting a malicious site. No scripts were extracted, but the overall pattern suggests a social engineering lure to drive traffic to a potentially harmful website.

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-no-download-app-but-play-for-free-game-hack In PDF document text
    • http://digilibfisip.unla.ac.id/repository/how-do-you-get-free-robux-without-paying_GM431946152.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/cheat-roblox-jailbreak-installer_GM431946152.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/what-roblox-is-good-about-hacked-account_GM431946152.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/roblox-necklace-t-shirt-free_GM431946152.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/coin-master-free-spins-bit-ly_GM406889139.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/free-logo-youtube-for-roblox_GM431946152.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/roblox-store-free_GM431946152.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/roblox-hack-generator-online-no-survey_GM431946152.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/minecraft-fly-hack_GM479516143.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/www-roblox-robux_GM431946152.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/hack-tool-for-roblox-pc_GM431946152.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/free-robux-generator-com-roblox-hack_GM431946152.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/roblox-dragon-ball-final-hack_GM431946152.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/roblox-cheat-level-200_GM431946152.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/roblox-admin-hack-55-download_GM431946152.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/mega-fun-obby-games-free-play-online-not-roblox_GM431946152.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/descargar-roblox-hack-2397_GM431946152.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/roblox-obby-free_GM431946152.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/rbxfree-com-free-robux_GM431946152.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/coin-master-free-spins-2-5-2021_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
font_00_sfnt_off000030cd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x30CD 22060 bytes
SHA-256: 164b1a96acc436b3f42151d1b79b16a227121340eebefe670cf3c25e6e563b52
font_01_sfnt_off00006172.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6172 19444 bytes
SHA-256: ea47f9531116b16f57de1d803187e6efddda05d2630fe094ad28dda41a7c825b

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