Malicious PDF — malware analysis report

Static analysis result for SHA-256 bb58ba3c463f5ea8…

MALICIOUS

PDF

42.6 KB Created: 2021-05-16 13:31:47 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-04
MD5: b086345b9d9feffca4bb8e9207cffe0d SHA-1: da7e69ac10b3c409fb8c69e69dc733ad01dbf3b4 SHA-256: bb58ba3c463f5ea8b57e8369a3265aaf8219b0a3f64cbcf88559e2c4f6de948b
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/free-spins-for-coin-master-game-hack PDF link annotation
    • http://zinicrom.com/images/roblox-games-with-free-vip-servers_GM431946152.pdfIn PDF document text
    • http://zinicrom.com/images/coin-master-daily-spin-link-app_GM406889139.pdfIn PDF document text
    • http://zinicrom.com/images/free-robux-group-payouts_GM431946152.pdfIn PDF document text
    • http://zinicrom.com/images/minecraft-windows-10-free-code_GM479516143.pdfIn PDF document text
    • http://zinicrom.com/images/is-minecraft-education-edition-free_GM479516143.pdfIn PDF document text
    • http://zinicrom.com/images/coin-master-apk-hack-download_GM406889139.pdfIn PDF document text
    • http://zinicrom.com/images/best-roblox-hacks_GM431946152.pdfIn PDF document text
    • http://zinicrom.com/images/coin-master-free-spins-link-2021-today_GM406889139.pdfIn PDF document text
    • http://zinicrom.com/images/free-coin-master-cards_GM406889139.pdfIn PDF document text
    • http://zinicrom.com/images/free-coin-master-links_GM406889139.pdfIn PDF document text
    • http://zinicrom.com/images/hack-card-collection-coin-master_GM406889139.pdfIn PDF document text
    • http://zinicrom.com/images/roblox-hack-site_GM431946152.pdfIn PDF document text
    • http://zinicrom.com/images/free-coin-master-hack-no-verification_GM406889139.pdfIn PDF document text
    • http://zinicrom.com/images/coin-master-hack-xyz-download_GM406889139.pdfIn PDF document text
    • http://zinicrom.com/images/best-tricks-co-robux_GM431946152.pdfIn PDF document text
    • http://zinicrom.com/images/coin-master-free-attack-hack_GM406889139.pdfIn PDF document text
    • http://zinicrom.com/images/free-robux-hack_GM431946152.pdfIn PDF document text
    • http://zinicrom.com/images/minecraft-pe-server-hosting-free_GM479516143.pdfIn PDF document text
    • http://zinicrom.com/images/free-minecraft-servers-to-join_GM479516143.pdfIn PDF document text
    • http://zinicrom.com/images/roblox-arsenal-hack_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_off00004ac1.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4AC1 26112 bytes
SHA-256: 3bb9407505e6cfc95c9d63758deec7eb0765ea9c62a0dd180296325750f3793f
font_01_sfnt_off00008568.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8568 17884 bytes
SHA-256: 7a686c540965cac69e1923dfbb6a78ce3f92ec60dbbf6836da21cbb58cd4d6cc

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