Malicious PDF — malware analysis report

Static analysis result for SHA-256 e19fe68ee072eae1…

MALICIOUS

PDF

45.0 KB Created: 2021-06-03 05:21:30 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: 1e2ec46fb069f96ade4cc13b48bf2b36 SHA-1: 5874c5b5fcb358027231c863f81d0fd2a029f74f SHA-256: e19fe68ee072eae1014dcf3ab486090d17000b9768ac2f37f6a8e64231737958
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 0.9804

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.online/app/406889139/coin-master-hack-apk-ios-game-hack PDF link annotation
    • http://library.thamrin.ac.id/repository/minecraft-bedrock-free-download-pc_GM479516143.pdfIn PDF document text
    • http://library.thamrin.ac.id/repository/free-spins-in-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://library.thamrin.ac.id/repository/roblox-hack-client_GM431946152.pdfIn PDF document text
    • http://library.thamrin.ac.id/repository/robux-com-free_GM431946152.pdfIn PDF document text
    • http://library.thamrin.ac.id/repository/coin-master-cheats-without-verification_GM406889139.pdfIn PDF document text
    • http://library.thamrin.ac.id/repository/coin-master-game-hack-apk_GM406889139.pdfIn PDF document text
    • http://library.thamrin.ac.id/repository/haktuts-coin-master-free-spin-link_GM406889139.pdfIn PDF document text
    • http://library.thamrin.ac.id/repository/roblox-free-online-game_GM431946152.pdfIn PDF document text
    • http://library.thamrin.ac.id/repository/best-free-robux-sites-2021-november_GM431946152.pdfIn PDF document text
    • http://library.thamrin.ac.id/repository/oprewards-points-generator_GM431946152.pdfIn PDF document text
    • http://library.thamrin.ac.id/repository/how-to-get-free-robux-easy-2021_GM431946152.pdfIn PDF document text
    • http://library.thamrin.ac.id/repository/e-free-roblox_GM431946152.pdfIn PDF document text
    • http://library.thamrin.ac.id/repository/how-to-get-free-hats-on-roblox_GM431946152.pdfIn PDF document text
    • http://library.thamrin.ac.id/repository/master-game_GM406889139.pdfIn PDF document text
    • http://library.thamrin.ac.id/repository/minecraft-xbox-free_GM479516143.pdfIn PDF document text
    • http://library.thamrin.ac.id/repository/how-to-hack-and-get-free-robux_GM431946152.pdfIn PDF document text
    • http://library.thamrin.ac.id/repository/hack-coin-master-apk-32-download_GM406889139.pdfIn PDF document text
    • http://library.thamrin.ac.id/repository/free-robux-no-email_GM431946152.pdfIn PDF document text
    • http://library.thamrin.ac.id/repository/free-robux-2021_GM431946152.pdfIn PDF document text
    • http://library.thamrin.ac.id/repository/coin-master-game-hacks_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off00004c6b.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4C6B 24280 bytes
SHA-256: b7b379bd1b8b3aae9f5a00a38ec3db6599612374730e978990754d156889d9a6
font_01_sfnt_off000083d0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x83D0 2920 bytes
SHA-256: 64c53edae7920bc04119553d13e7f88c7ab8c9d6abd0f5e62be35afdb33f76ff
font_02_sfnt_off00008dec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8DEC 17892 bytes
SHA-256: 842ebafe75553617aa3406336693b508b1df3cd42ae030bb56c7cc7ab7429b4f

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