Malicious PDF — malware analysis report

Static analysis result for SHA-256 8b022b17dd132b8f…

MALICIOUS

PDF

46.4 KB Created: 2021-05-19 01:06:27 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: 6d8efe67441bcc5610715d28be1acd75 SHA-1: e9776e45b7dd6052efe3237671c40134de5babf6 SHA-256: 8b022b17dd132b8f2320f29117e6999378c9afde24918c5ae6953055f89294cf
100 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded links that redirect to a website promising free Robux, a common lure for scams. The heuristic 'PDF_MALICIOUS_REDIRECTOR_LINK' confirms this redirection to known malicious infrastructure. While no scripts were explicitly extracted, the nature of the lure and the embedded URLs suggest an attempt to lead the user to a malicious site, likely for credential harvesting or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8948

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/robuxlove-.net-free-robux-game-hack In PDF document text
    • http://brandyourbody.com/images/free-robux-working_GM431946152.pdfIn PDF document text
    • http://brandyourbody.com/images/coin-master-free-blogspot_GM406889139.pdfIn PDF document text
    • http://brandyourbody.com/images/how-to-get-free-robux-hack-2021_GM431946152.pdfIn PDF document text
    • http://brandyourbody.com/images/coin-master-32-mod-hack-apk-download_GM406889139.pdfIn PDF document text
    • http://brandyourbody.com/images/roblox-hack-download-pc_GM431946152.pdfIn PDF document text
    • http://brandyourbody.com/images/best-free-minecraft-hacked-client_GM479516143.pdfIn PDF document text
    • http://brandyourbody.com/images/roblox-microsoft-rewards_GM431946152.pdfIn PDF document text
    • http://brandyourbody.com/images/roblox-games-that-give-you-free-robux_GM431946152.pdfIn PDF document text
    • http://brandyourbody.com/images/free-robux-hack-generator_GM431946152.pdfIn PDF document text
    • http://brandyourbody.com/images/hack-coin-master-online_GM406889139.pdfIn PDF document text
    • http://brandyourbody.com/images/roblox-pink-free-robux_GM431946152.pdfIn PDF document text
    • http://brandyourbody.com/images/coin-master-hack-tool-v1-9-apk_GM406889139.pdfIn PDF document text
    • http://brandyourbody.com/images/oprewards-com-robux_GM431946152.pdfIn PDF document text
    • http://brandyourbody.com/images/spin-coin-master-free_GM406889139.pdfIn PDF document text
    • http://brandyourbody.com/images/where-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://brandyourbody.com/images/blogger-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://brandyourbody.com/images/free-roblox-items-codes_GM431946152.pdfIn PDF document text
    • http://brandyourbody.com/images/daily-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://brandyourbody.com/images/free-robux-stream_GM431946152.pdfIn PDF document text
    • http://brandyourbody.com/images/coin-master-links-for-free-spins-2021_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off0000461c.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x461C 27504 bytes
SHA-256: cbcd3fde00cd734b52857b768fffe0890ff56750e5da105b6eede536a6a490f6
font_01_sfnt_off000085aa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x85AA 5696 bytes
SHA-256: 450e3ee45915afe13702bf1d587eb8b9ad88a8d2113419ac9f2fd116a828e139
font_02_sfnt_off000092bc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x92BC 18372 bytes
SHA-256: 65db4e182113fd1a8aa6d8046ef53f92d54fa7b6a505b130f920b75136a01eb1