Malicious PDF — malware analysis report

Static analysis result for SHA-256 da9b96c6c04c0ad7…

MALICIOUS

PDF

48.7 KB Created: 2021-05-13 21:08:47 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 6fcd74ac0a31ca1228d26ebd40b69399 SHA-1: 68c2fa25965618f542cb50d5d2cee3a67257984e SHA-256: da9b96c6c04c0ad7ff06fb98cb813849baef0704b7c5317c685cb036419c62f2
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 0.8642

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/how-do-i-get-free-spins-in-coin-master-game-hack PDF link annotation
    • http://falconshipping-uae.com/userfiles/files/free-links-for-free-coins-and-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://falconshipping-uae.com/userfiles/files/roblox-lawsuit_GM431946152.pdfIn PDF document text
    • http://falconshipping-uae.com/userfiles/files/coin-master-hack-android-root_GM406889139.pdfIn PDF document text
    • http://falconshipping-uae.com/userfiles/files/free-robux-generator-2021-no-human-verification_GM431946152.pdfIn PDF document text
    • http://falconshipping-uae.com/userfiles/files/coin-master-free-link-today_GM406889139.pdfIn PDF document text
    • http://falconshipping-uae.com/userfiles/files/minecraft-thumbnail-maker-free_GM479516143.pdfIn PDF document text
    • http://falconshipping-uae.com/userfiles/files/www-bandicam-com-free-robux_GM431946152.pdfIn PDF document text
    • http://falconshipping-uae.com/userfiles/files/blogspot-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://falconshipping-uae.com/userfiles/files/coin-master-hack-2021-apk_GM406889139.pdfIn PDF document text
    • http://falconshipping-uae.com/userfiles/files/is-there-a-way-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://falconshipping-uae.com/userfiles/files/www-roblox-com-free-robux_GM431946152.pdfIn PDF document text
    • http://falconshipping-uae.com/userfiles/files/free-spins-for-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://falconshipping-uae.com/userfiles/files/minecraft-for-laptop-free_GM479516143.pdfIn PDF document text
    • http://falconshipping-uae.com/userfiles/files/free-back-accessories-roblox_GM431946152.pdfIn PDF document text
    • http://falconshipping-uae.com/userfiles/files/minecraft-pe-free-download_GM479516143.pdfIn PDF document text
    • http://falconshipping-uae.com/userfiles/files/free-robux-codes-2021-not-used_GM431946152.pdfIn PDF document text
    • http://falconshipping-uae.com/userfiles/files/how-to-buy-robux-for-free_GM431946152.pdfIn PDF document text
    • http://falconshipping-uae.com/userfiles/files/free-spins-and-coins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://falconshipping-uae.com/userfiles/files/free-roblox-accounts-with-robux-that-work-not-banned_GM431946152.pdfIn PDF document text
    • http://falconshipping-uae.com/userfiles/files/coin-master-free-spins-today-daily-links_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004bd6.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4BD6 24616 bytes
SHA-256: 944e2416bc46ae82bcd24b8a7cff79e8deacf76f95ac5f27e08bec12fc7b2322
font_01_sfnt_off00008427.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8427 4028 bytes
SHA-256: a17c2a746d49ac23b23e38a371e32fddecfcd91b10cf42ff6155bff6b8a07e91
font_02_sfnt_off000091c8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x91C8 2788 bytes
SHA-256: 6fd7c7f447d66842f81aa8cf197935b17f22157d0c7e9f95622df1b5b4ddf530
font_03_sfnt_off00009bb8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9BB8 18216 bytes
SHA-256: b027c2a021bab7014740c7b31d1151edd7292f7703eb7b510e8af7521ebdade3

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