Malicious PDF — malware analysis report

Static analysis result for SHA-256 7d92a2f5a9e569ff…

MALICIOUS

PDF

41.3 KB Created: 2021-05-19 19:43:35 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: d3e7aa04a43d650570dfe59f5696f858 SHA-1: 19044c46cb330e7d0b2a7fdfbf4d1f42014070b8 SHA-256: 7d92a2f5a9e569ffddd5c42fac92ea6efe9b8460413322edfa33b5527b80ac3b
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-tiradas-gratis-link-game-hack PDF link annotation
    • http://firesafetyservices.biz/images/free-spins-and-coins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://firesafetyservices.biz/images/minecraft-wurst_GM479516143.pdfIn PDF document text
    • http://firesafetyservices.biz/images/how-to-get-free-robux-on-pc_GM431946152.pdfIn PDF document text
    • http://firesafetyservices.biz/images/minecraft-hacked-apk_GM479516143.pdfIn PDF document text
    • http://firesafetyservices.biz/images/hacks-para-roblox_GM431946152.pdfIn PDF document text
    • http://firesafetyservices.biz/images/coin-master-free-spin-link-app_GM406889139.pdfIn PDF document text
    • http://firesafetyservices.biz/images/free-robux-sites-that-work_GM431946152.pdfIn PDF document text
    • http://firesafetyservices.biz/images/how-to-win-robux_GM431946152.pdfIn PDF document text
    • http://firesafetyservices.biz/images/free-robux-kid-friendly-no-human-verification_GM431946152.pdfIn PDF document text
    • http://firesafetyservices.biz/images/free-robux-generator-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • http://firesafetyservices.biz/images/free-coin-master-hack-no-verification_GM406889139.pdfIn PDF document text
    • http://firesafetyservices.biz/images/coin-master-links-to-free-spins_GM406889139.pdfIn PDF document text
    • http://firesafetyservices.biz/images/free-things-on-roblox_GM431946152.pdfIn PDF document text
    • http://firesafetyservices.biz/images/free-minecraft-domain_GM479516143.pdfIn PDF document text
    • http://firesafetyservices.biz/images/coin-master-spin-rewards_GM406889139.pdfIn PDF document text
    • http://firesafetyservices.biz/images/code-free-robux_GM431946152.pdfIn PDF document text
    • http://firesafetyservices.biz/images/how-to-get-free-robux-fast_GM431946152.pdfIn PDF document text
    • http://firesafetyservices.biz/images/coin-master-gift-hack_GM406889139.pdfIn PDF document text
    • http://firesafetyservices.biz/images/minecraft-pocket-edition-free-ios_GM479516143.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_off00004911.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4911 24232 bytes
SHA-256: ecc4f8d1459783a8d5ce7d343a6245b46c6511dbb0a6f00f1660afa1196d9579
font_01_sfnt_off0000802c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x802C 17888 bytes
SHA-256: 7e3d0d6e3169ec9d1b4a39f1a8de513868e09ebca0bcabadf274b5e058877262

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