Malicious PDF — malware analysis report

Static analysis result for SHA-256 89309acaf2fcf72a…

MALICIOUS

PDF

34.1 KB Created: 2021-06-27 14:07:59 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: 509a0e855686fd20bdc81fed0e913060 SHA-1: 0035530a4e493843de5e24666f5ad492728022cf SHA-256: 89309acaf2fcf72a69d5afe1121686ac77d1ffd61792323778cd4591116618ce
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/roblox-hack-exploit-2021-game-hack PDF link annotation
    • http://perpus.i2s-learning.com/repository/free-robux-generator-no-human-verification_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com//repository/how-to-hack-people-on-roblox_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/inappropriate-roblox-hacks_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/tiktok-free-unlimited-likes_GM835599320.pdfIn PDF document text
    • http://perpus.i2s-learning.com//repository/op-rewards-free-robux_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/how-to-hack-your-friends-account-on-roblox_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/roblox-gang-rape_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com//repository/how-to-change-your-username-in-roblox-for-free_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com//repository/minecraft-free-download-chromebook_GM479516143.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/how-to-get-more-robux-for-free_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/free-roblox-shirt-templates-2021_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com//repository/minecraft-hacks-for-2b2t_GM479516143.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/roblox-com-free-robux_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com//repository/how-to-get-free-robux-on-roblox-2021_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com//repository/orewards-com-free-robux_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/how-to-hack-coin-master-game_GM406889139.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/get-free-robux-on-a-server-roblox_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com//repository/blogger-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/get-free-robux-info_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/codes-to-get-free-money-on-roblox-rocitizens_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_off00002dd6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2DD6 22020 bytes
SHA-256: b8d5d7594a71902ffd523054a921652844d06642277933c510f5fd9674c5159d
font_01_sfnt_off00005ea0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5EA0 19460 bytes
SHA-256: d6b7905b42d950a6c90d4eb5b64d81287d2403341b3ffddd75095c63608e9789

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