Malicious PDF — malware analysis report

Static analysis result for SHA-256 5e1b292e9978e6ea…

MALICIOUS

PDF

35.2 KB Created: 2021-07-05 04:12:35 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 828b73826f7d3f9b75014f0d1ecdb84f SHA-1: 85f4a7580e5a65bd3b3f3bac7162ebee6ca72312 SHA-256: 5e1b292e9978e6ea98248a28b911fbe5cca77a5af220cb26bf6a9e6ada610035
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a lure related to game hacks and free in-game currency, directing users to a malicious URL. The ML classifier strongly flagged this PDF as malicious, and multiple heuristics indicate a redirection to potentially harmful content. No scripts were extracted, but the embedded URLs and the nature of the lure suggest a phishing or scam attempt.

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/406889139/free-spins-coin-master-without-completing-offers-game-hack PDF link annotation
    • http://perpus.i2s-learning.com/repository/roblox-hack-phantom-forces-cheat-engine_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/how-to-get-free-robux-easy-2021_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/this-app-gives-you-free-robux_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com//repository/coin-master-hack-no-download_GM406889139.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/minecraft_GM479516143.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/hack-jailbreak-roblox-dinero-infinito_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com//repository/free-roblox-intros_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/mcpe-master-hack-coins_GM406889139.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/roblox-card-2021-652021-free_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/how-to-make-a-free-t-shirt-on-roblox_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/websites-that-give-you-free-robux_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com//repository/how-to-earn-robux-fast_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/how-to-upload-roblox-audio-for-free_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/coin-master-free-spins-and-coins-today-gift-reward_GM406889139.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/free-download-play-roblox_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/how-to-get-free-premium-roblox_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com//repository/coin-master-free-spins-link-2021-download_GM406889139.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/how-to-get-free-robux-easy-on-phone_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/wall-hack-roblox-download_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/free-spin-gratis-coin-master_GM406889139.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_002_off0000307d.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x307D 23288 bytes
SHA-256: 7889ee98a2e9646426713950fb09df203a278524a48d4bc76a9ef04746ace714
font_01_sfnt_off000064e2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x64E2 19012 bytes
SHA-256: 38b4359b19ef97a63db652ebdf9cc47704fd0bffe869da76ab01049d051bc034

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