Malicious PDF — malware analysis report

Static analysis result for SHA-256 6cf91e2708b6b3b6…

MALICIOUS

PDF

33.1 KB Created: 2021-07-07 16:38:11 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: f94efe1a2cd90284b5570cfc325460e6 SHA-1: 58dd86aa5a783bfa02158fe43a2acf9f895a997d SHA-256: 6cf91e2708b6b3b6cecce3b4ed1dbcf6e6684434bedf8867af2d6651434dcd91
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.tw/app/406889139/coin-master-hack-tool-india-game-hack PDF link annotation
    • https://digilib.stimlog.ac.id/repository/roblox-hacks-giveaways_GM431946152.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/coin-master-free-spin-download_GM406889139.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/roblox-free-online-demo_GM431946152.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/coin-master-free-spins-link-2021-today_GM406889139.pdfIn PDF document text
    • http://digilib.stimlog.ac.id/repository/how-to-get-free-robux-legit-filmz_GM431946152.pdfIn PDF document text
    • http://digilib.stimlog.ac.id/repository/robux-no-human-verification_GM431946152.pdfIn PDF document text
    • http://digilib.stimlog.ac.id/repository/roblox-t-shirt-free_GM431946152.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/how-to-hack-in-roblox-got-talent_GM431946152.pdfIn PDF document text
    • http://digilib.stimlog.ac.id/repository/roblox-gang_GM431946152.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/new-cheat-codes-for-adopt-me-on-roblox_GM431946152.pdfIn PDF document text
    • http://digilib.stimlog.ac.id/repository/how-to-get-free-robux-easy_GM431946152.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/free-roblox-robux-generator-activation-code_GM431946152.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/robux-free-account_GM431946152.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/free-tiktok-views_GM835599320.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/roblox-account-hacked-2021_GM431946152.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/how-to-get-free-robux-no-human-verification_GM431946152.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/free-followers-for-tiktok_GM835599320.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/roblox-com-redeem_GM431946152.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/spin-free-coin-master_GM406889139.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/free-robux-generator-for-kids_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_off00002f96.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F96 21468 bytes
SHA-256: 900fe5bf1136204d4c0b3f36309c42ff0e7442490899ddc68c2d5d271091a6ee
font_01_sfnt_off00005e8a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5E8A 18252 bytes
SHA-256: ffe97fc8cee96c1fd45e73c60664157d7c2e594940e0fa3cef2a8dd17db459bf

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