Malicious PDF — malware analysis report

Static analysis result for SHA-256 276174f20713d85b…

MALICIOUS

PDF

34.0 KB Created: 2021-06-18 19:30:27 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 331b525dd1430f77ca271ce579c4bc4f SHA-1: 2312dc9955d367c96dfed8d4be5388f80cba8cc2 SHA-256: 276174f20713d85b73e4b3a9b4543fd8b8bdcc72fc7f2a775649f540c3754373
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/free-roblox-game-card-game-hack PDF link annotation
    • http://opac.fuf.uin-alauddin.ac.id/repository/roblox-rs-free_GM431946152.pdfIn PDF document text
    • http://opac.fuf.uin-alauddin.ac.id/repository/roblox-free-headphones-2021_GM431946152.pdfIn PDF document text
    • http://opac.fuf.uin-alauddin.ac.id/repository/roblox-com-free-promo-codes_GM431946152.pdfIn PDF document text
    • http://opac.fuf.uin-alauddin.ac.id/repository/free-roblox-accounts-with-robux-that-work-not-banned-2021_GM431946152.pdfIn PDF document text
    • http://opac.fuf.uin-alauddin.ac.id/repository/free-robux-credit-card_GM431946152.pdfIn PDF document text
    • http://opac.fuf.uin-alauddin.ac.id/repository/rbx-free-robux_GM431946152.pdfIn PDF document text
    • http://opac.fuf.uin-alauddin.ac.id/repository/free-mods-for-minecraft-pe_GM479516143.pdfIn PDF document text
    • http://opac.fuf.uin-alauddin.ac.id/repository/can-u-get-free-robux_GM431946152.pdfIn PDF document text
    • http://opac.fuf.uin-alauddin.ac.id/repository/free-rap-lyrics-for-robux_GM431946152.pdfIn PDF document text
    • http://opac.fuf.uin-alauddin.ac.id/repository/can-you-get-robux-for-free_GM431946152.pdfIn PDF document text
    • http://opac.fuf.uin-alauddin.ac.id/repository/roblox-insert-tool-hack_GM431946152.pdfIn PDF document text
    • http://opac.fuf.uin-alauddin.ac.id/repository/free-robux-with-out-rewards_GM431946152.pdfIn PDF document text
    • http://opac.fuf.uin-alauddin.ac.id/repository/free-robux-cards_GM431946152.pdfIn PDF document text
    • http://opac.fuf.uin-alauddin.ac.id/repository/free-roblox-robux-bc-accounts-codes-more_GM431946152.pdfIn PDF document text
    • http://opac.fuf.uin-alauddin.ac.id/repository/robux-hack-2021-september_GM431946152.pdfIn PDF document text
    • http://opac.fuf.uin-alauddin.ac.id/repository/coin-master-hack_GM406889139.pdfIn PDF document text
    • http://opac.fuf.uin-alauddin.ac.id/repository/minecraft-free-trial_GM479516143.pdfIn PDF document text
    • http://opac.fuf.uin-alauddin.ac.id/repository/free-robux-real_GM431946152.pdfIn PDF document text
    • http://opac.fuf.uin-alauddin.ac.id/repository/free-robux-games_GM431946152.pdfIn PDF document text
    • http://opac.fuf.uin-alauddin.ac.id/repository/how-to-hack-roblox-prison-life-on-ipad_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_off00002d47.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2D47 22468 bytes
SHA-256: 45075d0b97bb9f02d7455ea5993334fe704dc3a4757833030093f3b24a18af43
font_01_sfnt_off00005f92.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F92 19084 bytes
SHA-256: 8d8fe722e2d2f782bf852da96cad31a1cc2b0cfb4d98f4630837f3de97f0d8c9

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