Malicious PDF — malware analysis report

Static analysis result for SHA-256 2778e3b1d7cedb49…

MALICIOUS

PDF

44.8 KB Created: 2021-06-03 21:36:04 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 74ff76611d3b131bcc483029322eba56 SHA-1: 4c75251c1846e060463c819581ba42908ca41f92 SHA-256: 2778e3b1d7cedb494e26f317833f4cf9a3c85f0d7bc4bdc98acee1e5965aeb60
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a high-severity heuristic indicating it links to a game hack lure, specifically pointing to 'https://netcdn.online/app/406889139/hack-coin-master-for-iphone-game-hack'. The document body also contains this URL and other suspicious URLs related to free game currency. This suggests the file is designed to trick users into visiting malicious sites, likely for credential harvesting or malware distribution.

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.online/app/406889139/hack-coin-master-for-iphone-game-hack PDF link annotation
    • http://e-library.smkn1jombang.sch.id/repository/can-you-get-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://e-library.smkn1jombang.sch.id/repository/level-coin_GM406889139.pdfIn PDF document text
    • http://e-library.smkn1jombang.sch.id/repository/free-robux-mobile_GM431946152.pdfIn PDF document text
    • http://e-library.smkn1jombang.sch.id/repository/www-free-robux_GM431946152.pdfIn PDF document text
    • http://e-library.smkn1jombang.sch.id/repository/how-to-get-free-robux-easy-hack_GM431946152.pdfIn PDF document text
    • http://e-library.smkn1jombang.sch.id/repository/hack-coin-master-for-iphone_GM406889139.pdfIn PDF document text
    • http://e-library.smkn1jombang.sch.id/repository/ways-to-get-robux_GM431946152.pdfIn PDF document text
    • http://e-library.smkn1jombang.sch.id/repository/free-robux-today_GM431946152.pdfIn PDF document text
    • http://e-library.smkn1jombang.sch.id/repository/free-robux-no-survey-or-human-verification_GM431946152.pdfIn PDF document text
    • http://e-library.smkn1jombang.sch.id/repository/how-do-u-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://e-library.smkn1jombang.sch.id/repository/roblox-land-free-robux_GM431946152.pdfIn PDF document text
    • http://e-library.smkn1jombang.sch.id/repository/free-robux-no-verification-or-survey_GM431946152.pdfIn PDF document text
    • http://e-library.smkn1jombang.sch.id/repository/coin-master-free-spins-and-coins-blogspot_GM406889139.pdfIn PDF document text
    • http://e-library.smkn1jombang.sch.id/repository/free-roblox-accounts-that-work_GM431946152.pdfIn PDF document text
    • http://e-library.smkn1jombang.sch.id/repository/how-to-hack-someones-roblox-account-2021_GM431946152.pdfIn PDF document text
    • http://e-library.smkn1jombang.sch.id/repository/coin-master-free-spin-group_GM406889139.pdfIn PDF document text
    • http://e-library.smkn1jombang.sch.id/repository/coin-master-free-spins-link-download-today_GM406889139.pdfIn PDF document text
    • http://e-library.smkn1jombang.sch.id/repository/how-to-play-roblox-for-free_GM431946152.pdfIn PDF document text
    • http://e-library.smkn1jombang.sch.id/repository/get-free-minecraft-account_GM479516143.pdfIn PDF document text
    • http://e-library.smkn1jombang.sch.id/repository/lazyblox-com-free-robux_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
stream_004_off000050f5.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x50F5 26544 bytes
SHA-256: aec7f276997639d7766396d1fc3325470729b1c3bfa1b9edef2e68bdb5cd3328
font_01_sfnt_off00008ce6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8CE6 18220 bytes
SHA-256: a643bdf6fb2c46f92d7d27c645ae746f9817b2095321c6eed50ee62637779c53

Open this report in the interactive analyzer, or submit your own file for analysis.