Malicious PDF — malware analysis report

Static analysis result for SHA-256 04a0467601e803b1…

MALICIOUS

PDF

41.9 KB Created: 2021-05-19 09:41:27 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 4483537c97bf6aaef157bbe853e26f1c SHA-1: d5dd20e31de2947b739a72f4b40abd6c89973bd6 SHA-256: 04a0467601e803b1109e91951d545e8daa2e1394a40aae958f2263ec2e556eab
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 0.9971

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/479516143/minecraft-hack-ios-game-hack PDF link annotation
    • https://www.bhyllsacreprimaryschool.org/admin/ckfinder/userfiles/files/how-to-hack-coins-in-mcpe-master_GM406889139.pdfIn PDF document text
    • https://www.bhyllsacreprimaryschool.org/admin/ckfinder/userfiles/files/roblox-free-robux_GM431946152.pdfIn PDF document text
    • https://www.bhyllsacreprimaryschool.org/admin/ckfinder/userfiles/files/coin-master-32-hack-apk_GM406889139.pdfIn PDF document text
    • https://www.bhyllsacreprimaryschool.org/admin/ckfinder/userfiles/files/free-coin-master-spins-2021_GM406889139.pdfIn PDF document text
    • https://www.bhyllsacreprimaryschool.org/admin/ckfinder/userfiles/files/roblox-games-that-give-you-free-robux_GM431946152.pdfIn PDF document text
    • https://www.bhyllsacreprimaryschool.org/admin/ckfinder/userfiles/files/coin-master-free-spins-2021_GM406889139.pdfIn PDF document text
    • https://www.bhyllsacreprimaryschool.org/admin/ckfinder/userfiles/files/gamesofficenet-hack-coin-master_GM406889139.pdfIn PDF document text
    • https://www.bhyllsacreprimaryschool.org/admin/ckfinder/userfiles/files/archery-master-3d-apk-and-mod-free-download-unlimited-coins_GM406889139.pdfIn PDF document text
    • https://www.bhyllsacreprimaryschool.org/admin/ckfinder/userfiles/files/roblox-hack-me_GM431946152.pdfIn PDF document text
    • https://www.bhyllsacreprimaryschool.org/admin/ckfinder/userfiles/files/free-spins-from-coin-master_GM406889139.pdfIn PDF document text
    • https://www.bhyllsacreprimaryschool.org/admin/ckfinder/userfiles/files/hackear-coin-master-android_GM406889139.pdfIn PDF document text
    • https://www.bhyllsacreprimaryschool.org/admin/ckfinder/userfiles/files/rbxcity-free-robux_GM431946152.pdfIn PDF document text
    • https://www.bhyllsacreprimaryschool.org/admin/ckfinder/userfiles/files/corn-master_GM406889139.pdfIn PDF document text
    • https://www.bhyllsacreprimaryschool.org/admin/ckfinder/userfiles/files/hacks-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://www.bhyllsacreprimaryschool.org/admin/ckfinder/userfiles/files/roblox-promo-codes-for-free-robux_GM431946152.pdfIn PDF document text
    • https://www.bhyllsacreprimaryschool.org/admin/ckfinder/userfiles/files/coin-master-unlimited-coins-hack-apk-download_GM406889139.pdfIn PDF document text
    • https://www.bhyllsacreprimaryschool.org/admin/ckfinder/userfiles/files/earn-robux-com_GM431946152.pdfIn PDF document text
    • https://www.bhyllsacreprimaryschool.org/admin/ckfinder/userfiles/files/how-to-get-minecraft-pe-for-free_GM479516143.pdfIn PDF document text
    • https://www.bhyllsacreprimaryschool.org/admin/ckfinder/userfiles/files/minecraft-hacked-client-18_GM479516143.pdfIn PDF document text
    • https://www.bhyllsacreprimaryschool.org/admin/ckfinder/userfiles/files/robux-free-gift-card-org-hack_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
stream_003_off000049dd.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x49DD 24776 bytes
SHA-256: b3b0cccd6b442c24d4a06c6044d4a2690cb437cce5eb14d3ea8cda29cb0f2449
font_01_sfnt_off000082be.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x82BE 17880 bytes
SHA-256: 4f62ffa84bec6987c7bb4a965c21c3f9081c6d15a1e2ce4cbfb05006ff20176d

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