Malicious PDF — malware analysis report

Static analysis result for SHA-256 084807dc302ce4b9…

MALICIOUS

PDF

42.1 KB Created: 2021-05-19 09:49:07 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: b75416d2c98b29f09830e8aed69fea0a SHA-1: 599cf35cb93dfe0d29ca588b91b4b7807471eaca SHA-256: 084807dc302ce4b9ffb51ca2dcd2d6774d82aa6b5da7a35101d8116971f8aa13
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF contains heuristics indicating it is malicious and attempts to lure the user into installing a browser extension or viewer. It also contains an external URI pointing to a suspicious URL, likely to host a malicious payload or redirect to a phishing site. No scripts were extracted, but the presence of external URIs and social engineering lures suggests a downloader or phishing attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

Heuristics 4

  • Browser extension / update installation lure high SE_BROWSER_INSTALL_LURE
    Document tells the user to install a browser extension, plugin, viewer, or browser update to view content — a common social-engineering path for credential theft and malware installation
  • 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/835599320/can-tiktok-free-views-game-hack PDF link annotation
    • http://floreswindows.com/images/free-robux-codes-2021-not-used_GM431946152.pdfIn PDF document text
    • http://floreswindows.com/images/doctor-louie-roblox_GM431946152.pdfIn PDF document text
    • http://floreswindows.com/images/how-to-download-minecraft-windows-10-edition-for-free_GM479516143.pdfIn PDF document text
    • http://floreswindows.com/images/free-robux-instantly_GM431946152.pdfIn PDF document text
    • http://floreswindows.com/images/coin-master-daily-free-spins-link-today_GM406889139.pdfIn PDF document text
    • http://floreswindows.com/images/roblox-2021_GM431946152.pdfIn PDF document text
    • http://floreswindows.com/images/free-robux-no-verification-2021-android_GM431946152.pdfIn PDF document text
    • http://floreswindows.com/images/cm-free-spins_GM406889139.pdfIn PDF document text
    • http://floreswindows.com/images/roblox-promo-codes-generator-no-human-verification_GM431946152.pdfIn PDF document text
    • http://floreswindows.com/images/free-spins-from-coin-master_GM406889139.pdfIn PDF document text
    • http://floreswindows.com/images/minecraft-ps4-free_GM479516143.pdfIn PDF document text
    • http://floreswindows.com/images/coin-master-spin-blogspot_GM406889139.pdfIn PDF document text
    • http://floreswindows.com/images/coin-master-free-spins-link-no-verification-2021_GM406889139.pdfIn PDF document text
    • http://floreswindows.com/images/coin-master-free-link-spin_GM406889139.pdfIn PDF document text
    • http://floreswindows.com/images/roblox-hack-app_GM431946152.pdfIn PDF document text
    • http://floreswindows.com/images/no-human-verification-hack-for-coin-master_GM406889139.pdfIn PDF document text
    • http://floreswindows.com/images/hack-coin-master-nyc_GM406889139.pdfIn PDF document text
    • http://floreswindows.com/images/coin-master-cheats-free_GM406889139.pdfIn PDF document text
    • http://floreswindows.com/images/free-minecraft-skins-pe_GM479516143.pdfIn PDF document text
    • http://floreswindows.com/images/best-free-robux-sites_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_off000044da.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x44DA 28368 bytes
SHA-256: fb12ede785cfcfe80ec3ef17a8129b496c5e1dac3873a7b4d554d4c7af8581b8
font_01_sfnt_off00008325.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8325 17984 bytes
SHA-256: ddb3c8da6246871618f387746d3ff41fb385c4735fe6c72bf76181b12b6a3531

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