Malicious PDF — malware analysis report

Static analysis result for SHA-256 cee010d042769277…

MALICIOUS

PDF

40.3 KB Created: 2021-04-26 03:16:19 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 9438d6898d43e234f450d97c697de98a SHA-1: 23b3bf933989515302f047e61a96094ec7a187c3 SHA-256: cee010d04276927785e1ecd6d569f9ceb378550d0e577d52c4fa30cd4e183aea
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 0.9941

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.xyz/app/431946152/roblox-cheat-codes-list-game-hack PDF link annotation
    • https://lib-stie.yai.ac.id/repository/do-you-want-to-get-free-robux.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/free-robux-games-that-work.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/www-roblox-games-free-com.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/hacker-roblox-fr.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/free-supreme-roblox-shirt.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/roblox-admin-hack-apk.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/www-roblox-com-to-purchase-more-robux-for-free.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/free-codes-for-roblox-miner-haven.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/free-models-rides-roblox.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/videos-de-como-ser-hacker-en-roblox-2021.pdfIn PDF document text
    • https://freerobux.cyouIn 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_003_off00004035.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4035 25656 bytes
SHA-256: 3315f8c8bc747b49b77ff6fe70731fcd4f46a9c53ae73dfea3db52cd3ccc1fb9
font_01_sfnt_off00007a9f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7A9F 18576 bytes
SHA-256: 47af97806c67dcbba9ac4d890ac887605cfaafe709e2df1dce513a25cecb18a1

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