Malicious PDF — malware analysis report

Static analysis result for SHA-256 fc33ded6c714ba4e…

MALICIOUS

PDF

44.9 KB Created: 2021-06-01 08:09:41 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: afdc5f62cfeaa17753d6647e3ea97769 SHA-1: 6b41fc897215e6a9262979f65abe177c2cb51e3a SHA-256: fc33ded6c714ba4e9704e46075a4a009ccb8e045939d7e00a3ad719f24b6aa74
100 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a lure promising free Robux, directing users to a known malicious redirector. The ML classifier also flagged this document as malicious. The presence of embedded URLs and the document's content strongly suggest a phishing or scam attempt designed to lead users to malicious infrastructure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9865

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 https://netcdn.xyz/app/431946152/get-free-robux-now.com-game-hack In PDF document text
    • https://porownywarkaleasingowa.pl/wp-content/uploads/fsqm-files/free-likes-for-tiktok_GM835599320.pdfIn PDF document text
    • https://porownywarkaleasingowa.pl/wp-content/uploads/fsqm-files/how-to-get-minecraft-pocket-edition-for-free_GM479516143.pdfIn PDF document text
    • https://porownywarkaleasingowa.pl/wp-content/uploads/fsqm-files/free-tiktok-accounts-with-followers_GM835599320.pdfIn PDF document text
    • https://porownywarkaleasingowa.pl/wp-content/uploads/fsqm-files/funny-free-roblox-outfits_GM431946152.pdfIn PDF document text
    • https://porownywarkaleasingowa.pl/wp-content/uploads/fsqm-files/how-to-get-free-robux-no-human-verification_GM431946152.pdfIn PDF document text
    • https://porownywarkaleasingowa.pl/wp-content/uploads/fsqm-files/best-free-minecraft-servers_GM479516143.pdfIn PDF document text
    • https://porownywarkaleasingowa.pl/wp-content/uploads/fsqm-files/how-to-hack-into-ppls-account-on-roblox_GM431946152.pdfIn PDF document text
    • https://porownywarkaleasingowa.pl/wp-content/uploads/fsqm-files/free-minecraft-hacks_GM479516143.pdfIn PDF document text
    • https://porownywarkaleasingowa.pl/wp-content/uploads/fsqm-files/how-to-hack-into-someones-roblox-account_GM431946152.pdfIn PDF document text
    • https://porownywarkaleasingowa.pl/wp-content/uploads/fsqm-files/roblox36com-free-robux_GM431946152.pdfIn PDF document text
    • https://porownywarkaleasingowa.pl/wp-content/uploads/fsqm-files/how-to-hack-minecraft_GM479516143.pdfIn PDF document text
    • https://porownywarkaleasingowa.pl/wp-content/uploads/fsqm-files/roblox-hack-bloob_GM431946152.pdfIn PDF document text
    • https://porownywarkaleasingowa.pl/wp-content/uploads/fsqm-files/hack-rango-99-roblox-phantom-forces_GM431946152.pdfIn PDF document text
    • https://porownywarkaleasingowa.pl/wp-content/uploads/fsqm-files/how-to-get-free-robux-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • https://porownywarkaleasingowa.pl/wp-content/uploads/fsqm-files/roblox-builders-club-free-2021_GM431946152.pdfIn PDF document text
    • https://porownywarkaleasingowa.pl/wp-content/uploads/fsqm-files/free-minecraft-website_GM479516143.pdfIn PDF document text
    • https://porownywarkaleasingowa.pl/wp-content/uploads/fsqm-files/how-to-contact-roblox-for-hack-acount_GM431946152.pdfIn PDF document text
    • https://porownywarkaleasingowa.pl/wp-content/uploads/fsqm-files/hacks-for-ninja-legends-roblox-mobile_GM431946152.pdfIn PDF document text
    • https://porownywarkaleasingowa.pl/wp-content/uploads/fsqm-files/how-to-hack-somebody-on-roblox-2021_GM431946152.pdfIn PDF document text
    • https://porownywarkaleasingowa.pl/wp-content/uploads/fsqm-files/free-robux-generator-for-kids_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_off00005309.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5309 24688 bytes
SHA-256: 0e25d48afe0bff3a9c72430f20ac827e7692fd3637ea6dcd87cc6d06ec165835
font_01_sfnt_off00008bc9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8BC9 18608 bytes
SHA-256: ad0f940b40fdaba22adab057ab67f88d9e25fa006e4af4b6b10926ecf378f277