Malicious PDF — malware analysis report

Static analysis result for SHA-256 e51de04cfa5a6f94…

MALICIOUS

PDF

35.7 KB Created: 2021-07-01 11:49:35 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: c9c9ed47748133f64208c693fbaec592 SHA-1: 0b37e48ffe65ddccaaf81a8e31a3b859e00a960c SHA-256: e51de04cfa5a6f946e0e421ea840b540ee1f10d72168574f9b74aab842e58d14
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/play-roblox-for-free-without-signing-in-game-hack PDF link annotation
    • http://opac.salatigakota.go.id/slims7/repository/free-robux-codes-2021-no-survey_GM431946152.pdfIn PDF document text
    • http://opac.salatigakota.go.id/slims7/repository/free-admin-ad-roblox_GM431946152.pdfIn PDF document text
    • http://opac.salatigakota.go.id/slims7/repository/roblox-cheat-zombie-rush_GM431946152.pdfIn PDF document text
    • http://opac.salatigakota.go.id/slims7//repository/tiktok-freepik_GM835599320.pdfIn PDF document text
    • http://opac.salatigakota.go.id/slims7//repository/roebucks-on-roblox_GM431946152.pdfIn PDF document text
    • http://opac.salatigakota.go.id/slims7/repository/free-roblox-account-genrator_GM431946152.pdfIn PDF document text
    • http://opac.salatigakota.go.id/slims7/repository/free-robux-rixty-codes-2021_GM431946152.pdfIn PDF document text
    • http://opac.salatigakota.go.id/slims7/repository/free-money-in-bloxburg-roblox_GM431946152.pdfIn PDF document text
    • http://opac.salatigakota.go.id/slims7/repository/free-robux-on-samsung-tablet_GM431946152.pdfIn PDF document text
    • http://opac.salatigakota.go.id/slims7/repository/star-roblox-mad-city-hack_GM431946152.pdfIn PDF document text
    • http://opac.salatigakota.go.id/slims7//repository/minecraft-xbox-360-free_GM479516143.pdfIn PDF document text
    • http://opac.salatigakota.go.id/slims7//repository/free-robux-real-2021_GM431946152.pdfIn PDF document text
    • http://opac.salatigakota.go.id/slims7/repository/dugeon-quest-roblox-hack_GM431946152.pdfIn PDF document text
    • http://opac.salatigakota.go.id/slims7/repository/roblox-tix-hack-2021_GM431946152.pdfIn PDF document text
    • http://opac.salatigakota.go.id/slims7/repository/roblox-phantom-forces-geld-hack-deutsch_GM431946152.pdfIn PDF document text
    • http://opac.salatigakota.go.id/slims7/repository/how-to-get-free-robux-easy-on-pc_GM431946152.pdfIn PDF document text
    • http://opac.salatigakota.go.id/slims7//repository/free-robux-hack-us_GM431946152.pdfIn PDF document text
    • http://opac.salatigakota.go.id/slims7/repository/kohls-command-in-roblox-for-free-money_GM431946152.pdfIn PDF document text
    • http://opac.salatigakota.go.id/slims7/repository/free-robux-2021-september_GM431946152.pdfIn PDF document text
    • http://opac.salatigakota.go.id/slims7/repository/roblox-hacked-prehacks_GM431946152.pdfIn PDF document text
    • https://www.roblox.com/.IIn 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_off000031eb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x31EB 22768 bytes
SHA-256: 91b09134e9e267c9796eddf50bbce4e63d663d3de84fa1dc8db5fa76209f8625
font_01_sfnt_off000064d1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x64D1 19712 bytes
SHA-256: 575126090d489348da767966adc2eee4097ad6e4eeae5ec118bb21a9ca4ddead

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