Malicious PDF — malware analysis report

Static analysis result for SHA-256 e648c84015d715a3…

MALICIOUS

PDF

34.2 KB Created: 2021-07-05 22:43:25 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: a2f15851155897d22e80dd1f2fd5e27e SHA-1: 17a72376ed3277fa526b878151984bd9b3b62b71 SHA-256: e648c84015d715a3a95456f782f683b5b0fdb08db630ca3666473114c2688c9d
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 0.9980

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 http://netcdn.tw/app/431946152/robux-com-roblox-game-hack PDF link annotation
    • http://library.umla.ac.id/repository/how-do-you-hack-minecraft_GM479516143.pdfIn PDF document text
    • http://library.umla.ac.id//repository/sb-game-hacker-coin-master_GM406889139.pdfIn PDF document text
    • http://library.umla.ac.id//repository/coin-master-free-coins_GM406889139.pdfIn PDF document text
    • http://library.umla.ac.id//repository/coin-master-email-rewards-link_GM406889139.pdfIn PDF document text
    • http://library.umla.ac.id//repository/hack-download_GM431946152.pdfIn PDF document text
    • http://library.umla.ac.id/repository/free-minecraft-games-for-kids_GM479516143.pdfIn PDF document text
    • http://library.umla.ac.id/repository/roblox-avatar-ideas-free_GM431946152.pdfIn PDF document text
    • http://library.umla.ac.id//repository/coin-master-hack-mod-apk-download_GM406889139.pdfIn PDF document text
    • http://library.umla.ac.id//repository/free-robux-survey_GM431946152.pdfIn PDF document text
    • http://library.umla.ac.id/repository/how-to-get-free-spins-on-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://library.umla.ac.id/repository/coin-master-hack-2021-apk_GM406889139.pdfIn PDF document text
    • http://library.umla.ac.id//repository/coin-master-free-spins-link-blogspot-2021_GM406889139.pdfIn PDF document text
    • http://library.umla.ac.id//repository/coin-master-free-spins-link-2021-today_GM406889139.pdfIn PDF document text
    • http://library.umla.ac.id//repository/robux-for-kids_GM431946152.pdfIn PDF document text
    • http://library.umla.ac.id/repository/free-coin-master-coins-and-spins_GM406889139.pdfIn PDF document text
    • http://library.umla.ac.id/repository/how-to-get-free-pets-in-adopt-me-roblox_GM431946152.pdfIn PDF document text
    • http://library.umla.ac.id/repository/free-spin-coin-master-link-download_GM406889139.pdfIn PDF document text
    • http://library.umla.ac.id//repository/coin-master-free-spin-and-coins-links_GM406889139.pdfIn PDF document text
    • http://library.umla.ac.id/repository/game-on-roblox-free-items-on-the-catalog-no-hack_GM431946152.pdfIn PDF document text
    • http://library.umla.ac.id/repository/minecraft-free-ios-2021_GM479516143.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
font_00_sfnt_off00002e41.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2E41 22668 bytes
SHA-256: 144c8c3d1d6b59e5c15ed73a038ec04d34604dd27b4e41ee84441342d590c2e0
font_01_sfnt_off00006101.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6101 18884 bytes
SHA-256: b35ea90b5a849e8deab35f4acfb4b07c38c04b72584db640398ded17ccc22cda

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