Malicious PDF — malware analysis report

Static analysis result for SHA-256 65d4290f01f45016…

MALICIOUS

PDF

42.6 KB Created: 2021-05-11 13:40:42 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: 7751d8841fe4a9b09729a365a5cedc98 SHA-1: 70f7483e2b035c9f4498d4760a8da62cff88af25 SHA-256: 65d4290f01f45016f2157fac3000017b59fb6ac197f66b6dfb717eb41163bc56
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-spins-bit-ly-game-hack PDF link annotation
    • http://unifieo.br/images/how-to-get-minecoins-in-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://unifieo.br/images/how-do-you-hack-roblox_GM431946152.pdfIn PDF document text
    • http://unifieo.br/images/how-to-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://unifieo.br/images/robux-codes-generator-no-human-verification_GM431946152.pdfIn PDF document text
    • http://unifieo.br/images/minecraft-story-mode-free_GM479516143.pdfIn PDF document text
    • http://unifieo.br/images/how-do-you-get-free-robux-without-doing-anything_GM431946152.pdfIn PDF document text
    • http://unifieo.br/images/best-roblox-hacks_GM431946152.pdfIn PDF document text
    • http://unifieo.br/images/hack-master-coin-pc_GM406889139.pdfIn PDF document text
    • http://unifieo.br/images/give-me-free-robux_GM431946152.pdfIn PDF document text
    • http://unifieo.br/images/coin-master-free-coins-and-spins-link_GM406889139.pdfIn PDF document text
    • http://unifieo.br/images/microsoft-roblox-rewards_GM431946152.pdfIn PDF document text
    • http://unifieo.br/images/minecraft-clipart-free_GM479516143.pdfIn PDF document text
    • http://unifieo.br/images/how-to-get-free-chest-in-coin-master_GM406889139.pdfIn PDF document text
    • http://unifieo.br/images/how-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://unifieo.br/images/can-you-actually-get-free-robux_GM431946152.pdfIn PDF document text
    • http://unifieo.br/images/coin-master-free-spins-apk-2021_GM406889139.pdfIn PDF document text
    • http://unifieo.br/images/coin-master-free-spins-link-today-hack_GM406889139.pdfIn PDF document text
    • http://unifieo.br/images/moonactive-free-spins_GM406889139.pdfIn PDF document text
    • http://unifieo.br/images/minecraft-free-no-virus_GM479516143.pdfIn PDF document text
    • http://unifieo.br/images/roebucks-on-roblox_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_off00004980.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4980 25384 bytes
SHA-256: 2169b548c64e5e6c75ed416a0265296b4354a998c52e0bec6ad5e5623b4f9a05
font_01_sfnt_off00008408.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8408 18280 bytes
SHA-256: 30193a21741cc5402413da2ce8c3dbb562d342d001498cd3d21d10b4bea75843

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