Malicious PDF — malware analysis report

Static analysis result for SHA-256 c32f5478eae35afe…

MALICIOUS

PDF

37.3 KB Created: 2021-06-18 14:24:23 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-04
MD5: d3ab5630ad8e50f356f336618789018b SHA-1: 00ac1fee6bca8ce1f4497a44a59d1ebbc0e27568 SHA-256: c32f5478eae35afecb7febcd078508b56c8312c54ff61d7b3c669aae174dcedd
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/roblox-free-robux-and-tix-hack-game-hack PDF link annotation
    • http://vetmed.fkh.unair.ac.id/repository/minecraft-pe-server-hosting-free_GM479516143.pdfIn PDF document text
    • http://vetmed.fkh.unair.ac.id/repository/google-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://www.vetmed.fkh.unair.ac.id/repository/roblox-1m-robux-hack_GM431946152.pdfIn PDF document text
    • http://www.vetmed.fkh.unair.ac.id/repository/free-roblox-printables_GM431946152.pdfIn PDF document text
    • http://www.vetmed.fkh.unair.ac.id/repository/roblox-com-free-robux_GM431946152.pdfIn PDF document text
    • http://vetmed.fkh.unair.ac.id/repository/roblox-bgs-cheats-to-get-kraken_GM431946152.pdfIn PDF document text
    • http://vetmed.fkh.unair.ac.id/repository/roblox-jailbreak-money-hack-2021_GM431946152.pdfIn PDF document text
    • http://www.vetmed.fkh.unair.ac.id/repository/how-to-hack-into-someones-roblox-account_GM431946152.pdfIn PDF document text
    • http://www.vetmed.fkh.unair.ac.id/repository/when-was-minecraft-free_GM479516143.pdfIn PDF document text
    • http://www.vetmed.fkh.unair.ac.id/repository/free-roebucks_GM431946152.pdfIn PDF document text
    • http://www.vetmed.fkh.unair.ac.id/repository/how-to-download-roblox-on-pc-for-free_GM431946152.pdfIn PDF document text
    • http://vetmed.fkh.unair.ac.id/repository/coin-master-daily-free-spins-2021_GM406889139.pdfIn PDF document text
    • http://www.vetmed.fkh.unair.ac.id/repository/coin-master-free-spins-link-march-2021_GM406889139.pdfIn PDF document text
    • http://www.vetmed.fkh.unair.ac.id/repository/free-roblox-accounts-with-dominus_GM431946152.pdfIn PDF document text
    • http://www.vetmed.fkh.unair.ac.id/repository/minecraft-free-download-ipad_GM479516143.pdfIn PDF document text
    • http://www.vetmed.fkh.unair.ac.id/repository/coinmaster-blogspot_GM406889139.pdfIn PDF document text
    • http://vetmed.fkh.unair.ac.id/repository/facebook-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://vetmed.fkh.unair.ac.id/repository/free-robux-generator-for-kids_GM431946152.pdfIn PDF document text
    • http://vetmed.fkh.unair.ac.id/repository/can-i-get-free-robux_GM431946152.pdfIn PDF document text
    • http://www.vetmed.fkh.unair.ac.id/repository/minecraft-free-download-windows-10_GM479516143.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_off00003b47.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3B47 22332 bytes
SHA-256: e55ab9596d51e5c7f318bebc242b2f5f716100231bd6f66fd9f5b4296b694797
font_01_sfnt_off00006c9d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6C9D 19256 bytes
SHA-256: 86526fde39282e2a8031f35ff6668647a765e39ea90b94b617027fef8aadc5e3

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