Malicious PDF — malware analysis report

Static analysis result for SHA-256 e9152423a0a32a9b…

MALICIOUS

PDF

44.9 KB Created: 2021-06-11 06:07:59 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-18
MD5: fa36c11af84dec635a612a5080cf85b4 SHA-1: a9b660a599966f07b85177b597abda0b30c565d7 SHA-256: e9152423a0a32a9b9f87c7a3ff686781fdaf0476e8b0740ccaec3086a769c659
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 0.9865

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.tw/app/431946152/how-to-make-your-own-group-on-roblox-for-free-game-hack PDF link annotation
    • http://www.elibrary.perludem.org/repository/free-robux-promo-codes_GM431946152.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/how-to-get-free-robux-fast-and-easy_GM431946152.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/free-links-to-coin-master_GM406889139.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/coin-master-unlimited-spin-hack-apk_GM406889139.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/free-spin-link-for-coin-master_GM406889139.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/win-free-robux_GM431946152.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/coin-master-hack-xyz-download_GM406889139.pdfIn PDF document text
    • http://elibrary.perludem.org//repository/coin-master-free-spins-link-31-march-2021_GM406889139.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/minecraft-windows-10-edition-hacked-client_GM479516143.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/minecraft-free-download-chromebook_GM479516143.pdfIn PDF document text
    • http://elibrary.perludem.org//repository/coin-master-hack-mod-apk_GM406889139.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/free-promo-codes-roblox-2021-june_GM431946152.pdfIn PDF document text
    • http://elibrary.perludem.org//repository/coin-master-free-spin-daily-link_GM406889139.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/free-minecraft-hosting-24-7_GM479516143.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/how-to-get-free-robux-in-2021_GM431946152.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/coin-master-update-2021_GM406889139.pdfIn PDF document text
    • http://elibrary.perludem.org//repository/free-roblox-intros_GM431946152.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/tiktok-fans-free_GM835599320.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/coin-master-spin-pattern_GM406889139.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/free-roblox-avatar-ideas_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off00004fec.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4FEC 25120 bytes
SHA-256: ba3c4f761c0a80881e8eb45092fe80be392112c4f5f9a4ac67fb1f10fbc8df7f
font_01_sfnt_off00008a4b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8A4B 19184 bytes
SHA-256: 09d6ca239c7441f6e4020002557037e46009aea69e391398345ccb1509be656a

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