Malicious PDF — malware analysis report

Static analysis result for SHA-256 0d3d07eaa45de09e…

MALICIOUS

PDF

41.1 KB Created: 2021-05-18 03:31:41 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 777c434ded5241d078d876f0c9008918 SHA-1: 1a374ed8058106e386d4ca7ac29781f82447fd2c SHA-256: 0d3d07eaa45de09e31e33dc4743866663b16ffd27c17a4d57e53d0351d1ffae1
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

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 0.9971

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.xyz/app/406889139/coin-master-free-spins-game-hack PDF link annotation
    • http://efeikaiwa.net/images/how-to-hack-any-roblox-account_GM431946152.pdfIn PDF document text
    • http://efeikaiwa.net/images/free-robux-no-downloading-apps_GM431946152.pdfIn PDF document text
    • http://efeikaiwa.net/images/what-is-a-minecraft-client_GM479516143.pdfIn PDF document text
    • http://efeikaiwa.net/images/earn-free-robux-today_GM431946152.pdfIn PDF document text
    • http://efeikaiwa.net/images/free-400-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://efeikaiwa.net/images/wizard-hacks_GM479516143.pdfIn PDF document text
    • http://efeikaiwa.net/images/hack-para-coin-master-sin-verification_GM406889139.pdfIn PDF document text
    • http://efeikaiwa.net/images/minecraft-pe-hacks_GM479516143.pdfIn PDF document text
    • http://efeikaiwa.net/images/free-admin-roblox_GM431946152.pdfIn PDF document text
    • http://efeikaiwa.net/images/instant-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://efeikaiwa.net/images/hacks-for-coin-master_GM406889139.pdfIn PDF document text
    • http://efeikaiwa.net/images/real-robux-codes_GM431946152.pdfIn PDF document text
    • http://efeikaiwa.net/images/robloxfun-com-generator_GM431946152.pdfIn PDF document text
    • http://efeikaiwa.net/images/how-to-hack-coin-master-in-pc_GM406889139.pdfIn PDF document text
    • http://efeikaiwa.net/images/coin-master-daily-free-spins-link-2021-today_GM406889139.pdfIn PDF document text
    • http://efeikaiwa.net/images/free-to-play-minecraft-servers_GM479516143.pdfIn PDF document text
    • http://efeikaiwa.net/images/how-to-hack-people-in-roblox_GM431946152.pdfIn PDF document text
    • http://efeikaiwa.net/images/how-to-get-free-robux-website_GM431946152.pdfIn PDF document text
    • http://efeikaiwa.net/images/coin-master-free-spins-hack-2021_GM406889139.pdfIn PDF document text
    • http://efeikaiwa.net/images/how-to-get-free-robux-instantly_GM431946152.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_off00004750.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4750 24644 bytes
SHA-256: 35ae95265098f8780792bebde617f8be6a3284a783117a94150f22d0d3d5ec0c
font_01_sfnt_off00007f72.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7F72 17884 bytes
SHA-256: 7b855ef2bb944b5b370c61480927ccad63ff31bdbf820bc1f0da9d35a10f5fb2

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