Malicious PDF — malware analysis report

Static analysis result for SHA-256 5914e83e149da3f0…

MALICIOUS

PDF

42.5 KB Created: 2021-05-12 07:33:18 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 0a0db7dea13c6f9b591631070d29806b SHA-1: 932b1e8e18a974ea30ffaeea0aa7ce2795ec487b SHA-256: 5914e83e149da3f09df78ab99bb483d68dacb61e93ede7c6037fb30e50003001
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 0.9971

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 https://netcdn.xyz/app/406889139/coin-master-free-gold-cards-link-2021-game-hack PDF link annotation
    • http://perpustakaan.uf.ac.id/opac/repository/roblox-arsenal-hacks-download_GM431946152.pdfIn PDF document text
    • http://perpustakaan.uf.ac.id/opac/repository/minecraft-hack-app_GM479516143.pdfIn PDF document text
    • http://perpustakaan.uf.ac.id/opac/repository/roblox-free-robux-no-verification_GM431946152.pdfIn PDF document text
    • http://perpustakaan.uf.ac.id/opac/repository/master-8-ball-pool-free-coins_GM406889139.pdfIn PDF document text
    • http://perpustakaan.uf.ac.id/opac/repository/coin-master-time-hack-2021_GM406889139.pdfIn PDF document text
    • http://perpustakaan.uf.ac.id/opac/repository/free-2021-robux_GM431946152.pdfIn PDF document text
    • http://perpustakaan.uf.ac.id/opac/repository/how-to-get-free-roblox-money_GM431946152.pdfIn PDF document text
    • http://perpustakaan.uf.ac.id/opac/repository/free-robux-pins_GM431946152.pdfIn PDF document text
    • http://perpustakaan.uf.ac.id/opac/repository/minecraft-pe-texture-packs-free-download_GM479516143.pdfIn PDF document text
    • http://perpustakaan.uf.ac.id/opac/repository/coin-master-cheats-2021_GM406889139.pdfIn PDF document text
    • http://perpustakaan.uf.ac.id/opac/repository/coin-master-free-spin-download_GM406889139.pdfIn PDF document text
    • http://perpustakaan.uf.ac.id/opac/repository/best-way-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://perpustakaan.uf.ac.id/opac/repository/coin-master-cards-hack-2021_GM406889139.pdfIn PDF document text
    • http://perpustakaan.uf.ac.id/opac/repository/how-to-hack-people-on-roblox_GM431946152.pdfIn PDF document text
    • http://perpustakaan.uf.ac.id/opac/repository/roblox-rewards_GM431946152.pdfIn PDF document text
    • http://perpustakaan.uf.ac.id/opac/repository/coin-master-unlimited-coins-hack-apk-download_GM406889139.pdfIn PDF document text
    • http://perpustakaan.uf.ac.id/opac/repository/coin-master-level-3_GM406889139.pdfIn PDF document text
    • http://perpustakaan.uf.ac.id/opac/repository/get-free-food-in-coin-master_GM406889139.pdfIn PDF document text
    • http://perpustakaan.uf.ac.id/opac/repository/coin-master-hack-online-generator_GM406889139.pdfIn PDF document text
    • http://perpustakaan.uf.ac.id/opac/repository/roblox-studio-free-download_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
stream_003_off000049f7.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x49F7 25244 bytes
SHA-256: ee35c6ad6f4fac41a05c47f434693efbc0610fff4bbbfb8fb6f07f82653f75d9
font_01_sfnt_off000082e9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x82E9 18532 bytes
SHA-256: a79e7cb72d84571651012e39c641e7e9f676cc5eff01d5029647c2118b2a51b7

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