Malicious PDF — malware analysis report

Static analysis result for SHA-256 bcd4f53fb2f5db8a…

MALICIOUS

PDF

44.4 KB Created: 2021-06-03 07:10:39 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 5c692db6dca98fc998fc63c30c5a2c8d SHA-1: 54f6f1d1d21345dd7c33cb258395dbfa6f6f8066 SHA-256: bcd4f53fb2f5db8aaec92fa123eb67d28dde9c335903df3a6f34b90116e11432
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 0.9865

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/431946152/roblox-studio-free-robux-game-hack PDF link annotation
    • http://perpus.i2s-learning.com/repository/get-free-robux-info_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com//repository/free-robux-generator-for-roblox-2021_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com//repository/free-robux-just-click_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/free-robux-without-doing-anything_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com//repository/free-diamonds-coin-master_GM406889139.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/claim-roblox_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com//repository/free-robux-for-free_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/minecraft-name-tag-hacks_GM479516143.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/how-to-hack-roblox-to-get-robux_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com//repository/coin-master-hack-no-verify_GM406889139.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/roblox-rape_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com//repository/coin-master-spin-link-today-free_GM406889139.pdfIn PDF document text
    • http://perpus.i2s-learning.com//repository/coin-master-game-hunters-club_GM406889139.pdfIn PDF document text
    • http://perpus.i2s-learning.com//repository/free-robux-no-verify-2021_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/coin-master-new-cards-hack_GM406889139.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/pubg-800-uc_GM1330123889.pdfIn PDF document text
    • http://perpus.i2s-learning.com//repository/coin-master-jackpot-madness-hack_GM406889139.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/how-to-hack-coins-in-mcpe-master_GM406889139.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/rbxdemon_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com//repository/free-robux-hacker-us_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_off00004f04.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4F04 26152 bytes
SHA-256: a236c86158762774f1daf1f12ae152416da7065e86a5b7878ee6fcddefa04230
font_01_sfnt_off00008a69.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8A69 18484 bytes
SHA-256: 5fdc582f30145a96e28329e80bd45567e2bf6a1df475cf6931e13f95db6331fe

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