Malicious PDF — malware analysis report

Static analysis result for SHA-256 ad462b41ea42f558…

MALICIOUS

PDF

32.3 KB Created: 2021-07-21 15:09:55 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-23
MD5: d466e58bb2d0e59569684c2026b760fc SHA-1: 890ada40049228dc57393e718075215bf5e55443 SHA-256: ad462b41ea42f5581f2111238daa712a470a34f575dadc0d461a66b6e665fa51
100 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a lure for a "free Robux generator" and includes a link to malicious redirector infrastructure. The ML classifier also flagged this PDF as malicious with high confidence. The embedded URLs suggest a phishing or scam attempt to redirect users to potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9900

Heuristics 3

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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
  • 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/431946152/huskybus.com-free-robux-game-hack In PDF document text
    • http://genialica.de/images/mine-minecraft-games-for-free_GM479516143.pdfIn PDF document text
    • http://genialica.de/images/free-robux-generator-no-verification-2021_GM431946152.pdfIn PDF document text
    • http://genialica.de/images/coin-master-free-2021-spin-link_GM406889139.pdfIn PDF document text
    • http://genialica.de/images/free-minecraft-alt-generator_GM479516143.pdfIn PDF document text
    • http://genialica.de/images/minecraft-pe-free-download_GM479516143.pdfIn PDF document text
    • http://genialica.de/images/free-robux-gift-card-codes_GM431946152.pdfIn PDF document text
    • http://genialica.de/images/how-to-get-free-tiktok-fans-without-human-verification_GM835599320.pdfIn PDF document text
    • http://genialica.de/images/minecraft-bedrock-free_GM479516143.pdfIn PDF document text
    • http://genialica.de/images/microsoft-free-robux_GM431946152.pdfIn PDF document text
    • http://genialica.de/images/coin-master-free-spins-link-today-instagram_GM406889139.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_off000026f4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x26F4 22968 bytes
SHA-256: 67ccf394e5c72a7635d86f67892366bdce9527a0e3699630ef559486b3160c2a
font_01_sfnt_off00005a75.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5A75 18876 bytes
SHA-256: 9402df10522a16d1b141ff55a22266ea3271231ec0f53b3ff36f088be41357ce

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