Malicious PDF — malware analysis report

Static analysis result for SHA-256 e98751b5c41b29f5…

MALICIOUS

PDF

33.9 KB Created: 2021-06-18 04:31:22 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 6a39477912c53fde80fff4a89eb9b047 SHA-1: 8a6fc81881d0acbf01782d9b410ae8e6342a8111 SHA-256: e98751b5c41b29f5db5ab1740b7d04f7bf903aa98b5aa1688fc0005828c647e3
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.co/app/431946152/hacks-roblox-royal-jelly-game-hack PDF link annotation
    • https://library.uigm.ac.id/repository/free-dell-laptop-roblox_GM431946152.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/free-roblox-gift-cards-2021-unused_GM431946152.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/free-spins-coin-master-android_GM406889139.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/2021-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/free-roblox-accounts-with-robux_GM431946152.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/how-to-get-free-robux-without-any-verification_GM431946152.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/roblox-fly-hack_GM431946152.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/minecraft-windows-10-mod-menu_GM479516143.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/coin-master-hack-app-link_GM406889139.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/make-free-robux_GM431946152.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/best-tricks-co-robux_GM431946152.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/get-robux-for-free-hack_GM431946152.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/free-spins-coin-master-links-app_GM406889139.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/coin-master-400-spin-link_GM406889139.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/free-cool-stuff-on-roblox_GM431946152.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/free-robux-hack_GM431946152.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/how-to-get-free-robux-without-verification-2021_GM431946152.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/free-to-play-minecraft-servers_GM479516143.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/free-robux-play-games-earn-points_GM431946152.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/how-to-hack-a-person-on-roblox-2021_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
font_00_sfnt_off00002d7b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2D7B 22368 bytes
SHA-256: 9b1b0b61a6c9f6639eb7ed746fe339280da7821ee9e5952246feee2b3725be37
font_01_sfnt_off00005f73.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F73 19004 bytes
SHA-256: 17b816819aa755e9472e59290c01db7e0e9dd627aa28ef65f135c6cac9ae13c0

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