Malicious PDF — malware analysis report

Static analysis result for SHA-256 ebe54eb214ec487c…

MALICIOUS

PDF

47.5 KB Created: 2021-06-04 04:33:34 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 3519809bbf9f14956aab382d1d4a059a SHA-1: c4750e003071b7fe833a52f066a4d963e3e5f8b5 SHA-256: ebe54eb214ec487c6459af1ad804d298973148b64aa4ff92a32f15d4bbfa34fd
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 0.9832

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/red-boy-free-robux-game-hack PDF link annotation
    • http://library.sdkmaterdei.sch.id/repository/how-to-get-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • http://library.sdkmaterdei.sch.id/repository/free-minecraft-texture-packs_GM479516143.pdfIn PDF document text
    • http://library.sdkmaterdei.sch.id/repository/get-free-robux-no-human-verification_GM431946152.pdfIn PDF document text
    • http://library.sdkmaterdei.sch.id/repository/microsoft-free-robux_GM431946152.pdfIn PDF document text
    • http://library.sdkmaterdei.sch.id/repository/free-coin-coin-master_GM406889139.pdfIn PDF document text
    • http://library.sdkmaterdei.sch.id/repository/robloxmatchcom-free-robux_GM431946152.pdfIn PDF document text
    • http://library.sdkmaterdei.sch.id/repository/free-robux-please_GM431946152.pdfIn PDF document text
    • http://library.sdkmaterdei.sch.id/repository/coin-master-free-spins-link-2021_GM406889139.pdfIn PDF document text
    • http://library.sdkmaterdei.sch.id/repository/get-free-tiktok-followers_GM835599320.pdfIn PDF document text
    • http://library.sdkmaterdei.sch.id/repository/tiktok-free-views_GM835599320.pdfIn PDF document text
    • http://library.sdkmaterdei.sch.id/repository/get-free-robux-com_GM431946152.pdfIn PDF document text
    • http://library.sdkmaterdei.sch.id/repository/is-it-possible-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://library.sdkmaterdei.sch.id/repository/huskybuscom-free-robux_GM431946152.pdfIn PDF document text
    • http://library.sdkmaterdei.sch.id/repository/roblox-hack-generator_GM431946152.pdfIn PDF document text
    • http://library.sdkmaterdei.sch.id/repository/free-robux-no-human-verification-no-survey_GM431946152.pdfIn PDF document text
    • http://library.sdkmaterdei.sch.id/repository/how-to-get-free-robux-no-human-verification_GM431946152.pdfIn PDF document text
    • http://library.sdkmaterdei.sch.id/repository/free-minecraft-accounts-2021_GM479516143.pdfIn PDF document text
    • http://library.sdkmaterdei.sch.id/repository/how-to-buy-robux-for-free_GM431946152.pdfIn PDF document text
    • http://library.sdkmaterdei.sch.id/repository/hacks-roblox_GM431946152.pdfIn PDF document text
    • http://library.sdkmaterdei.sch.id/repository/coin-master-free-spins-app_GM406889139.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_004_off0000526b.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x526B 30548 bytes
SHA-256: 99214952565ea0e3f6058d7168a3597b5b4f60df170cc6336a33c906276b7b7f
font_01_sfnt_off0000971f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x971F 18368 bytes
SHA-256: b0e23a0ed52a3cee7256066067fe65d0230d732110584f989509142c71000dae

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