Malicious PDF — malware analysis report

Static analysis result for SHA-256 e857510bbc45784d…

MALICIOUS

PDF

33.8 KB Created: 2021-06-21 12:24:39 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-17
MD5: 5cf1e451572f4c603d9e13b4eaa1c1b8 SHA-1: c99cbb7ea6289b466de9f93d737fbeaf17d3c747 SHA-256: e857510bbc45784de0ff06219a65167825466319201cfbed141ffd3295e27008
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains embedded links that redirect to a URL associated with game hacks and free in-game currency lures. The heuristic 'PDF_GAME_HACK_REDIRECT_LURE' and the presence of numerous similar URLs strongly indicate a phishing or scam attempt. While no scripts were explicitly extracted, the nature of the embedded links suggests they are intended to lead the user to download further malicious content or provide personal information.

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/roblox-carfs-free-2021-game-hack PDF link annotation
    • https://www.new-racoba.com/uploaded_files/userfiles/files/coin-master-links-free-spins_GM406889139.pdfIn PDF document text
    • https://www.new-racoba.com/uploaded_files/userfiles/files/wurst-112_GM479516143.pdfIn PDF document text
    • https://www.new-racoba.com/uploaded_files/userfiles/files/free-robux-on-phone_GM431946152.pdfIn PDF document text
    • https://www.new-racoba.com/uploaded_files/userfiles/files/how-to-get-free-minecraft-coins_GM479516143.pdfIn PDF document text
    • https://www.new-racoba.com/uploaded_files/userfiles/files/aether-hack-roblox_GM431946152.pdfIn PDF document text
    • https://www.new-racoba.com/uploaded_files/userfiles/files/get-free-robux_GM431946152.pdfIn PDF document text
    • https://www.new-racoba.com/uploaded_files/userfiles/files/roblox-hack-bloxburg_GM431946152.pdfIn PDF document text
    • https://www.new-racoba.com/uploaded_files/userfiles/files/earn-free-robux_GM431946152.pdfIn PDF document text
    • https://www.new-racoba.com/uploaded_files/userfiles/files/minecraft-pe-free-apk_GM479516143.pdfIn PDF document text
    • https://www.new-racoba.com/uploaded_files/userfiles/files/roblox-rewards-robux_GM431946152.pdfIn PDF document text
    • https://www.new-racoba.com/uploaded_files/userfiles/files/how-to-get-minecraft-for-free-on-xbox-one_GM479516143.pdfIn PDF document text
    • https://www.new-racoba.com/uploaded_files/userfiles/files/how-to-get-coin-master-free-spins-in-email_GM406889139.pdfIn PDF document text
    • https://www.new-racoba.com/uploaded_files/userfiles/files/free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://www.new-racoba.com/uploaded_files/userfiles/files/free-robux-gift-card-cods_GM431946152.pdfIn PDF document text
    • https://www.new-racoba.com/uploaded_files/userfiles/files/promo-codes-for-free-robux_GM431946152.pdfIn PDF document text
    • https://www.new-racoba.com/uploaded_files/userfiles/files/coin-master-free-spin-app-iphone_GM406889139.pdfIn PDF document text
    • https://www.new-racoba.com/uploaded_files/userfiles/files/daily-spin-coin-master-free_GM406889139.pdfIn PDF document text
    • https://www.new-racoba.com/uploaded_files/userfiles/files/tiktok-free-names_GM835599320.pdfIn PDF document text
    • https://www.new-racoba.com/uploaded_files/userfiles/files/roblox-notoriety-hack_GM431946152.pdfIn PDF document text
    • https://www.new-racoba.com/uploaded_files/userfiles/files/meep-city-roblox-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
font_00_sfnt_off00002d75.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2D75 22156 bytes
SHA-256: 4cbf31066851bf00db9e50954967f555e3507861440b8b903eb80d34c3108888
font_01_sfnt_off00005ec5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5EC5 19052 bytes
SHA-256: 4a649e185c13be590b92349d3c1667bda5e57637044477abbbc6d4b33525cd5f

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