Malicious PDF — malware analysis report

Static analysis result for SHA-256 bde77c76fda7304b…

MALICIOUS

PDF

37.7 KB Created: 2021-05-30 15:08:11 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: c4216ec1d40b1a4d6a8e51267e5fd362 SHA-1: 5122f2fc01fb865b3591b0365a69866f885b0c40 SHA-256: bde77c76fda7304b94ff711049168343db20b579af291e930066458768f087f4
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF document contains heuristics indicating it is malicious and attempts to lure the user into installing a browser extension or downloading a file. It contains multiple embedded URLs pointing to sites offering game hacks or free accounts, suggesting a social engineering tactic to trick users into downloading malware. The ML classifier also flagged this PDF with high confidence.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9984

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/free-tiktok-hearts-game-hack PDF link annotation
    • https://veyazdesign.pl/wp-content/uploads/fsqm-files/free-disney-plus-accounts-tiktok_GM835599320.pdfIn PDF document text
    • https://veyazdesign.pl/wp-content/uploads/fsqm-files/coin-master-free-gifts_GM406889139.pdfIn PDF document text
    • https://veyazdesign.pl/wp-content/uploads/fsqm-files/free-promo-codes-for-robux_GM431946152.pdfIn PDF document text
    • https://veyazdesign.pl/wp-content/uploads/fsqm-files/master-coin-free-spin_GM406889139.pdfIn PDF document text
    • https://veyazdesign.pl/wp-content/uploads/fsqm-files/how-to-get-free-robux-on-ipad_GM431946152.pdfIn PDF document text
    • https://veyazdesign.pl/wp-content/uploads/fsqm-files/free-coin-coin-master_GM406889139.pdfIn PDF document text
    • https://veyazdesign.pl/wp-content/uploads/fsqm-files/free-coin-master-spins-blog_GM406889139.pdfIn PDF document text
    • https://veyazdesign.pl/wp-content/uploads/fsqm-files/minecraft-education-edition-free_GM479516143.pdfIn PDF document text
    • https://veyazdesign.pl/wp-content/uploads/fsqm-files/how-to-get-minecraft-for-free-on-pc_GM479516143.pdfIn PDF document text
    • https://veyazdesign.pl/wp-content/uploads/fsqm-files/minecraft-java-edition-redeem-code-free-2021_GM479516143.pdfIn PDF document text
    • https://veyazdesign.pl/wp-content/uploads/fsqm-files/minecraft-hack-download_GM479516143.pdfIn PDF document text
    • https://veyazdesign.pl/wp-content/uploads/fsqm-files/minecraft-windows-10-free-with-java_GM479516143.pdfIn PDF document text
    • https://veyazdesign.pl/wp-content/uploads/fsqm-files/minecraft-pe-015-0-apk-free-download_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_002_off00003bdf.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3BDF 24120 bytes
SHA-256: 71f042be9827b54f7af4bc0d83bc0af92ef88e11cf62f723255f9b7a0e831c8e
font_01_sfnt_off0000732d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x732D 17684 bytes
SHA-256: d2d02d8ba990aafabbf3c8139bcf1f40ce6ab80109d0e8cf226d19766131c391