Malicious PDF — malware analysis report

Static analysis result for SHA-256 097d03da2a7dce84…

MALICIOUS

PDF

35.6 KB Created: 2021-06-29 01:18:29 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: d917ac6170a33aa70cbe6e90dbc89f5d SHA-1: 07f76ceeb8517d9c3d9d3e6f0e6fcd3fd4c0d339 SHA-256: 097d03da2a7dce849b616e7a99997caebb60055d2602080b3c3d62deff5044c6
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/how-to-get-free-robux-no-password-on-ipad-game-hack PDF link annotation
    • http://www.alpaca-buitensport.nl/images/minecraft-java-free-trial_GM479516143.pdfIn PDF document text
    • http://www.alpaca-buitensport.nl/images/v3rmillion-roblox-cheat-engine-bypass_GM431946152.pdfIn PDF document text
    • http://www.alpaca-buitensport.nl/images/comment-gagner-400-robux-sans-hack_GM431946152.pdfIn PDF document text
    • http://www.alpaca-buitensport.nl/images/coin-master-free-spins-link-download_GM406889139.pdfIn PDF document text
    • http://www.alpaca-buitensport.nl/images/robuxglobalcom-no-verification_GM431946152.pdfIn PDF document text
    • http://www.alpaca-buitensport.nl/images/minecraft-bedrock-server-hosting-free_GM479516143.pdfIn PDF document text
    • http://www.alpaca-buitensport.nl/images/how-to-get-robux-for-free-2021-no-hack_GM431946152.pdfIn PDF document text
    • http://www.alpaca-buitensport.nl/images/best-free-minecraft-hacked-client_GM479516143.pdfIn PDF document text
    • http://www.alpaca-buitensport.nl/images/wix-free-robux_GM431946152.pdfIn PDF document text
    • http://www.alpaca-buitensport.nl/images/was-minecraft-ever-free_GM479516143.pdfIn PDF document text
    • http://www.alpaca-buitensport.nl/images/how-many-free-spin-links-is-there-for-coin-master_GM406889139.pdfIn PDF document text
    • http://www.alpaca-buitensport.nl/images/minecraft-windows-10-edition-unlock-full-game-free_GM479516143.pdfIn PDF document text
    • http://www.alpaca-buitensport.nl/images/moonactive-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://www.alpaca-buitensport.nl/images/free-robux-on-phone_GM431946152.pdfIn PDF document text
    • http://www.alpaca-buitensport.nl/images/who-did-the-roblox-april-fools-hack_GM431946152.pdfIn PDF document text
    • http://www.alpaca-buitensport.nl/images/coin-master-free-spins-daily-link-updated_GM406889139.pdfIn PDF document text
    • http://www.alpaca-buitensport.nl/images/free-robux-without-survey_GM431946152.pdfIn PDF document text
    • http://www.alpaca-buitensport.nl/images/free-robux-com-roblox_GM431946152.pdfIn PDF document text
    • http://www.alpaca-buitensport.nl/images/tiktok-free-hong-kong_GM835599320.pdfIn PDF document text
    • http://www.alpaca-buitensport.nl/images/coin-master-cheats-free_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
font_00_sfnt_off00003230.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3230 22724 bytes
SHA-256: 8c8d794228e4b18a3794119957d849fa79234f87c9262194f63c90fcdd42573a
font_01_sfnt_off000064f2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x64F2 19488 bytes
SHA-256: 8edc0dfc3b513765dc204c9b689eeca9d07519a17b78d93b58ab04c863fb641d

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