Malicious PDF — malware analysis report

Static analysis result for SHA-256 ed8eb414fd905036…

MALICIOUS

PDF

42.8 KB Created: 2021-06-03 22:05:03 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: 886b42dc65feec3ba3369d005180f972 SHA-1: 408850c30101ae9a563cf318aa96ab7a4fcd6640 SHA-256: ed8eb414fd9050364dc8283ce9535aa0a3b0d62f1c7c244a5a708d56f609ee57
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF document was flagged as malicious by an ML classifier. The file routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9874

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector high 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.
  • 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
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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.online/app/835599320/tiktok-par-free-followers-kaise-badhaye-game-hack PDF link annotation
    • http://www.js100.com/uploads/ckeditor/files/how-to-download-minecraft-for-free-on-iphone_GM479516143.pdfIn PDF document text
    • http://www.js100.com/uploads/ckeditor/files/how-to-duplicate-coin-master-spin-hack_GM406889139.pdfIn PDF document text
    • http://www.js100.com/uploads/ckeditor/files/free-spin-coin-master-game_GM406889139.pdfIn PDF document text
    • http://www.js100.com/uploads/ckeditor/files/roblox-land-free-robux_GM431946152.pdfIn PDF document text
    • http://www.js100.com/uploads/ckeditor/files/free-minecraft-capes-no-mods_GM479516143.pdfIn PDF document text
    • http://www.js100.com/uploads/ckeditor/files/free-hair-roblox_GM431946152.pdfIn PDF document text
    • http://www.js100.com/uploads/ckeditor/files/roblox-hacked-com-2021_GM431946152.pdfIn PDF document text
    • http://www.js100.com/uploads/ckeditor/files/master-coin-free-spin-daily_GM406889139.pdfIn PDF document text
    • http://www.js100.com/uploads/ckeditor/files/i-want-free-robux_GM431946152.pdfIn PDF document text
    • http://www.js100.com/uploads/ckeditor/files/give-free-robux_GM431946152.pdfIn PDF document text
    • http://www.js100.com/uploads/ckeditor/files/coin-master-hack-apk-2021_GM406889139.pdfIn PDF document text
    • http://www.js100.com/uploads/ckeditor/files/free-minecraft-worlds_GM479516143.pdfIn PDF document text
    • http://www.js100.com/uploads/ckeditor/files/coin-master-free-spins-daily_GM406889139.pdfIn PDF document text
    • http://www.js100.com/uploads/ckeditor/files/minecraft-hack-mod_GM479516143.pdfIn PDF document text
    • http://www.js100.com/uploads/ckeditor/files/ro-ghoul-script_GM431946152.pdfIn PDF document text
    • http://www.js100.com/uploads/ckeditor/files/coin-master-free-spins-hack-but-no-surveys_GM406889139.pdfIn PDF document text
    • http://www.js100.com/uploads/ckeditor/files/how-to-get-free-robux-easy_GM431946152.pdfIn PDF document text
    • http://www.js100.com/uploads/ckeditor/files/how-to-get-free-robux-as-a-kid_GM431946152.pdfIn PDF document text
    • http://www.js100.com/uploads/ckeditor/files/coin-master-free-spins-and-coins-without-human-verification_GM406889139.pdfIn PDF document text
    • http://www.js100.com/uploads/ckeditor/files/coin-master-rewards-app_GM406889139.pdfIn PDF document text
    • https://launchpad.net/free-tiktok-fansIn 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_004_off00004e2a.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4E2A 23360 bytes
SHA-256: 8600b145c9d2cb2fc7c91a67531e098307be12ce4084b7f6994ce2e07ac4e763
font_01_sfnt_off000082f3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x82F3 18812 bytes
SHA-256: 945bee1891edf20e8a4188d4893fc588697106b64f430f4b30feed06c42b8e34

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