Malicious PDF — malware analysis report

Static analysis result for SHA-256 5d741f8eab923783…

MALICIOUS

PDF

44.9 KB Created: 2021-05-13 00:07:28 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: c5fe242606e3def9a86c1147cf07c030 SHA-1: 1904d42c420b1c1fdb09852167b2caaa2cd2f591 SHA-256: 5d741f8eab923783f52a307101ab0091543be8ae1d854e176e38521817288861
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a lure for game hacks and free currency, directing users to a malicious URL. The ML classifier also flagged this PDF as malicious. While no scripts were explicitly extracted, the PDF structure and embedded URLs suggest it is designed to redirect users to potentially malicious content, likely for credential harvesting or further malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9632

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/431946152/roblox-old-avatar-game-hack PDF link annotation
    • http://librarystkippgribl.com/repository/coin-master-free-spins-link-today-twitter_GM406889139.pdfIn PDF document text
    • http://librarystkippgribl.com//repository/minecraft-realms-free-codes_GM479516143.pdfIn PDF document text
    • http://librarystkippgribl.com/repository/free-robux-apps-that-work_GM431946152.pdfIn PDF document text
    • http://librarystkippgribl.com/repository/funbloxxyz-free-robux_GM431946152.pdfIn PDF document text
    • http://librarystkippgribl.com/repository/free-coin-master-spins-links-2021_GM406889139.pdfIn PDF document text
    • http://librarystkippgribl.com//repository/cmaster-club-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://librarystkippgribl.com/repository/mcpe-optifine_GM479516143.pdfIn PDF document text
    • http://librarystkippgribl.com//repository/my-roblox-account-was-hacked_GM431946152.pdfIn PDF document text
    • http://librarystkippgribl.com/repository/how-to-play-minecraft-with-friends-for-free_GM479516143.pdfIn PDF document text
    • http://librarystkippgribl.com//repository/coin-master-daily-free-spins-link-2021_GM406889139.pdfIn PDF document text
    • http://librarystkippgribl.com//repository/coin-master-free-spins-link-today-hack_GM406889139.pdfIn PDF document text
    • http://librarystkippgribl.com//repository/free-coin-master-spins-daily_GM406889139.pdfIn PDF document text
    • http://librarystkippgribl.com/repository/free-diamonds-coin-master_GM406889139.pdfIn PDF document text
    • http://librarystkippgribl.com//repository/roblox-robux-hack-generator_GM431946152.pdfIn PDF document text
    • http://librarystkippgribl.com//repository/coin-master-daily-free-spins-link-app-download_GM406889139.pdfIn PDF document text
    • http://librarystkippgribl.com//repository/minecraft-ios-mods_GM479516143.pdfIn PDF document text
    • http://librarystkippgribl.com//repository/coin-master-hacks-for-free-spins_GM406889139.pdfIn PDF document text
    • http://librarystkippgribl.com//repository/how-to-get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://librarystkippgribl.com/repository/free-robux-with-no-human-verification_GM431946152.pdfIn PDF document text
    • http://librarystkippgribl.com/repository/coin-master-free-spin-today_GM406889139.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004648.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4648 26664 bytes
SHA-256: 229f4c9b456c6c4de8018c1806af1d512414227d51712f9c20950cf4c1a677a5
font_01_sfnt_off0000824c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x824C 2908 bytes
SHA-256: e28d2c57f35643e2026f86c34ac3bb63cba74be3f6c066e81aba6d285e5a121b
font_02_sfnt_off00008c46.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8C46 18404 bytes
SHA-256: 3ee04b9976b2778629c251408a788a05adb62cbea0810dca153e44138bd3c832

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