Malicious PDF — malware analysis report

Static analysis result for SHA-256 e247861e1a79ceeb…

MALICIOUS

PDF

32.8 KB Created: 2021-07-06 12:18:11 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 742cd65488ba276935875a4a400c0766 SHA-1: c94759ba7dd3033e4d90e08dedf0955f4eceed31 SHA-256: e247861e1a79ceeb99157f30865c0c626c647b3bb843205ac4df244ffeacb467
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/479516143/free-minecraft-svg-cutting-files-game-hack PDF link annotation
    • http://digilibfisip.unla.ac.id/repository/free-robux-by-bananaman-2021-world_GM431946152.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/free-robux-on-iphone_GM431946152.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/roblox-plates-of-fate-hack-floating_GM431946152.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/robux-generator-without-verification_GM431946152.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/free-outfits-roblox_GM431946152.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/roschashcom-earn-free-robux-by-watching-videos-and-completing-sirveys_GM431946152.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/100-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/larva-hack-roblox_GM431946152.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/can-i-get-free-robux_GM431946152.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/coin-master-app-free-download_GM406889139.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/free-roblox-resources_GM431946152.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/free-robux-hack-2021-october_GM431946152.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/roblox-speed-race-hack_GM431946152.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/free-coins-coin-master_GM406889139.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/free-spin-and-daily-news-coin-master_GM406889139.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/coin-master-daily-free-spins-link-2021_GM406889139.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/free-auto-clicker-roblox_GM431946152.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/get-everything-free-on-roblox_GM431946152.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/how-to-get-1-million-robux-for-free-really-easy_GM431946152.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/roblox-natural-disaster-survival-how-to-get-free-balloon_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_off00002d1b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2D1B 22164 bytes
SHA-256: c996e9014186b35815b3c58386622c7dca1f6609d74d6fe08fbfab2187f0b206
font_01_sfnt_off00005dac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5DAC 18184 bytes
SHA-256: d8adc23434b6d0e05f295f09c84840afdc38f50d3441e35b803418cfc3e40aac

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