Malicious PDF — malware analysis report

Static analysis result for SHA-256 f0d59189477e2d7c…

MALICIOUS

PDF

36.0 KB Created: 2021-06-29 22:37:53 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-05
MD5: ec1b35e271cde49891f1c15728e76ef4 SHA-1: bea48f95e18b15229984baa08b9efcb24d9ec40f SHA-256: f0d59189477e2d7cba017ccf5c9a9671569a1130bdc28db9a5cf09f8be4a72b8
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/get-free-robux-without-human-verification-game-hack PDF link annotation
    • http://perpus.i2s-learning.com/repository/www-coinmaster_GM406889139.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/how-to-cheat-to-get-robux_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/robux-cheat-generator_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com//repository/gamesofficenet-hack-coin-master_GM406889139.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/roblox-money-hack-free_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com//repository/minecraft-hacks-wurst_GM479516143.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/how-hack-fairy-tail-forgotten-legend-roblox_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com//repository/how-do-you-get-free-robux-without-paying_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/daily-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://perpus.i2s-learning.com//repository/microsoft-bing-free-robux_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/how-to-hack-roblox-for-robux_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/how-to-hack-roblox-accounts-2021-october_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/coin-master-hack-app-android_GM406889139.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/redeem-roblox-cards-free-codes-2021_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/how-can-i-get-free-robux_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com//repository/pubg-uc-with-paypal_GM1330123889.pdfIn PDF document text
    • http://perpus.i2s-learning.com//repository/free-google-play-promo-codes-coin-master_GM406889139.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/roblox-leaderboard-script-hack_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/robux-free-promo-codes_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/coin-master-hack-programers_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_off000033d2.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x33D2 22576 bytes
SHA-256: 9fd40142b73c889ccee644214733abc9c91d0f0333f0e9cf074ef50e2ff1dfe8
font_01_sfnt_off00006623.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6623 19700 bytes
SHA-256: e8bf7ca05401f798ebc0703cbcc09d220ccc7d22796280ca6a3dd60c700d0f91

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