Malicious PDF — malware analysis report

Static analysis result for SHA-256 61c0e04b21777754…

MALICIOUS

PDF

34.1 KB Created: 2021-06-19 00:57:42 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-02
MD5: 8630811992baa9b44a700aa97a73c4ee SHA-1: bfd45401aa63b1133fd48e897cf0f64e660453d0 SHA-256: 61c0e04b21777754a16dd26d89074026068964cca0d8743701217a7e4c538ac6
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/does-roblox-track-the-ip-of-the-hacker-game-hack PDF link annotation
    • https://foc.vn/public/upload/files/minecraft-wurst-hacked-client_GM479516143.pdfIn PDF document text
    • https://foc.vn/public/upload/files/coin-master-free-spins-cash_GM406889139.pdfIn PDF document text
    • https://foc.vn/public/upload/files/free-robux-without-verification-2021_GM431946152.pdfIn PDF document text
    • https://foc.vn/public/upload/files/free-robux-without-survey_GM431946152.pdfIn PDF document text
    • https://foc.vn/public/upload/files/coin-master-reward-link_GM406889139.pdfIn PDF document text
    • https://foc.vn/public/upload/files/coin-master-in-app-purchase-hack_GM406889139.pdfIn PDF document text
    • https://foc.vn/public/upload/files/how-to-free-robux_GM431946152.pdfIn PDF document text
    • https://foc.vn/public/upload/files/roblox-ftw_GM431946152.pdfIn PDF document text
    • https://foc.vn/public/upload/files/coin-master-free-spin-codes_GM406889139.pdfIn PDF document text
    • https://foc.vn/public/upload/files/minecraft-free-download-unblocked_GM479516143.pdfIn PDF document text
    • https://foc.vn/public/upload/files/free-roblox-scripts_GM431946152.pdfIn PDF document text
    • https://foc.vn/public/upload/files/minecraft-hacks-115-2_GM479516143.pdfIn PDF document text
    • https://foc.vn/public/upload/files/beyblad-rebirth-roblox-hack_GM431946152.pdfIn PDF document text
    • https://foc.vn/public/upload/files/coin-master-links-for-free-spins-2021_GM406889139.pdfIn PDF document text
    • https://foc.vn/public/upload/files/roblox-free-download_GM431946152.pdfIn PDF document text
    • https://foc.vn/public/upload/files/free-robux-codes-not-used_GM431946152.pdfIn PDF document text
    • https://foc.vn/public/upload/files/minecraft-com-free_GM479516143.pdfIn PDF document text
    • https://foc.vn/public/upload/files/free-spins-coin-master-october-17-2021_GM406889139.pdfIn PDF document text
    • https://foc.vn/public/upload/files/free-coins-coin-master-link_GM406889139.pdfIn PDF document text
    • https://foc.vn/public/upload/files/coin-master-free-spins-hack_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002f75.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F75 21908 bytes
SHA-256: 93d1963e4346efa56d62b43081eb0bdb96f101f4f7297c4a046502ac540edf8d
font_01_sfnt_off00005faf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5FAF 19164 bytes
SHA-256: e73e1f1c807bcb0899a0de4f4e61bfcac0e5e22b31150ff2f3cd449d8afb02db

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