Malicious PDF — malware analysis report

Static analysis result for SHA-256 67e76849cd9e9549…

MALICIOUS

PDF

34.1 KB Created: 2021-07-07 17:40:43 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 8f35a8241d0c4501193c5b2b5a9adbdd SHA-1: 1b37a0a9f461f8e37a104eafd0b37b17cccf05f0 SHA-256: 67e76849cd9e9549f907fec659fe2545eb115c382ec45d38e0d454bfb1cee153
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.tw/app/479516143/free-minecraft-skins-java-game-hack PDF link annotation
    • https://luckydealuae.com/uploaded_files/userfiles/files/how-to-hack-someones-roblox-account_GM431946152.pdfIn PDF document text
    • https://luckydealuae.com/uploaded_files/userfiles/files/coin-master-links-free-spins_GM406889139.pdfIn PDF document text
    • https://luckydealuae.com/uploaded_files/userfiles/files/free-robux-kid-friendly_GM431946152.pdfIn PDF document text
    • https://luckydealuae.com/uploaded_files/userfiles/files/hacks-for-minecraft-bedrock_GM479516143.pdfIn PDF document text
    • https://luckydealuae.com/uploaded_files/userfiles/files/free-robux-no-verification-2021-android_GM431946152.pdfIn PDF document text
    • https://luckydealuae.com/uploaded_files/userfiles/files/het-free-robux-website_GM431946152.pdfIn PDF document text
    • https://luckydealuae.com/uploaded_files/userfiles/files/roblox-only-for-free_GM431946152.pdfIn PDF document text
    • https://luckydealuae.com/uploaded_files/userfiles/files/how-to-give-people-free-robux_GM431946152.pdfIn PDF document text
    • https://luckydealuae.com/uploaded_files/userfiles/files/free-minecraft-resource-packs_GM479516143.pdfIn PDF document text
    • https://luckydealuae.com/uploaded_files/userfiles/files/free-coin-master-spin-generator_GM406889139.pdfIn PDF document text
    • https://luckydealuae.com/uploaded_files/userfiles/files/minecraft-skins-download-free_GM479516143.pdfIn PDF document text
    • https://luckydealuae.com/uploaded_files/userfiles/files/free-tiktok-followers-without-verification_GM835599320.pdfIn PDF document text
    • https://luckydealuae.com/uploaded_files/userfiles/files/best-roblox-free-exploits_GM431946152.pdfIn PDF document text
    • https://luckydealuae.com/uploaded_files/userfiles/files/v3rmillion-free-robux-site-v3rmillionnet_GM431946152.pdfIn PDF document text
    • https://luckydealuae.com/uploaded_files/userfiles/files/link-for-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://luckydealuae.com/uploaded_files/userfiles/files/free-likes-and-favorites-on-roblox_GM431946152.pdfIn PDF document text
    • https://luckydealuae.com/uploaded_files/userfiles/files/free-robux-generator-2021-no-human-verification-or-survey_GM431946152.pdfIn PDF document text
    • https://luckydealuae.com/uploaded_files/userfiles/files/roblox-script-executor-free-mac_GM431946152.pdfIn PDF document text
    • https://luckydealuae.com/uploaded_files/userfiles/files/coin-master-free-spins-2021_GM406889139.pdfIn PDF document text
    • https://luckydealuae.com/uploaded_files/userfiles/files/friendly-face-free-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
font_00_sfnt_off000032a8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x32A8 21840 bytes
SHA-256: 0a861b48898c86c269c3328bb3ab445ce0e2aaddd2a4bc1ba9c926784273670e
font_01_sfnt_off00006288.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6288 18304 bytes
SHA-256: 401eb49ff2a7bbc2c0a7320b67dbf183b2d718a040190e5e2c5f0615a3ea9473