Malicious PDF — malware analysis report

Static analysis result for SHA-256 8aadb0abd293656b…

MALICIOUS

PDF

40.5 KB Created: 2020-08-31 14:30:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 547ecaab9f0521105d6db59f3c8fc94e SHA-1: cb05d812b9d867b1ae522ca80ee499ee3bd75f40 SHA-256: 8aadb0abd293656b804bed1f8d911d30dd385635b5ebe4fdc99e9136048aedae
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/wix?keyword=bludgeon+brothers+entrance+music'. Additionally, it exhibits characteristics of a PDF link farm, with numerous external links, including one to 'https://static.usrfiles.com/ugd/7c30af_ca04c002137448028c28a56bb941d482.pdf'. The document body, though heavily obfuscated, contains references to these URLs, suggesting an attempt to direct users to potentially harmful content.

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.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://ttraff.cc/wix?keyword=bludgeon+brothers+entrance+music
    • https://static.usrfiles.com/ugd/7c30af_ca04c002137448028c28a56bb941d482.pdf
    • https://static.usrfiles.com/ugd/b8c837_d135705168cd4abcae0b1b26b3c28bfb.pdf
    • https://static.usrfiles.com/ugd/20d83a_f6f7b2d73a7448969ac97041392c982a.pdf
    • https://cdn.shopify.com/s/files/1/0437/2204/7637/files/guidelines_on_the_management_of_latent_tuberculosis_infection.pdf
    • https://cdn.shopify.com/s/files/1/0437/2814/2501/files/effects_of_alcohol_on_performance.pdf
    • https://cdn.shopify.com/s/files/1/0438/5295/5810/files/everything_about_periodic_table.pdf
    • https://cdn.shopify.com/s/files/1/0434/3444/2908/files/8288142748.pdf
    • https://static.usrfiles.com/ugd/b8c837_84a0b93aa568496e8e1fa3454ffecf22.pdf
    • https://static.usrfiles.com/ugd/b8c837_576285e4ae404ae18ba0628f93e268f2.pdf
    • https://static.usrfiles.com/ugd/b8c837_122c8ffb822842fb91337fd11e7ec27c.pdf
    • https://static.usrfiles.com/ugd/fd7405_177be7a8adad40629dc3bb1f454e19fa.pdf
    • https://static.usrfiles.com/ugd/b8c837_980e1393dd6346279d5be4732cd1654f.pdf
    • https://static.usrfiles.com/ugd/b8c837_7339051676e34dbe9b5a7647ef9d821e.pdf
    • https://static.usrfiles.com/ugd/07625c_1d543c744a0047b9a1f7c9f6491809ad.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006084.bin
ef386a1a6979d6a25ed2c1478688d25c03931f5f76c30c099026b042c3ac562e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6084 5544 bytes
font_01_sfnt_off00007330.bin
b94b1527bce8210d9afffda2da974598b489c8af2b53af7242d2bc641244392f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7330 10088 bytes

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