Malicious PDF — malware analysis report

Static analysis result for SHA-256 d72a4523a74057f7…

MALICIOUS

PDF

49.3 KB Created: 2020-08-31 05:25:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3ba970334664409fbcea6842f2b9e592 SHA-1: 236a50719d9fa836a1bc6a0b3cb1f4eef524118c SHA-256: d72a4523a74057f7bc6d5cdee7304f2edfe7c901d5a8f4a58550fc2c8620dba1
120 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.com/wix?keyword=kousoku+card+battle%253A+card+hero'. This indicates the document's primary purpose is to lure the user to a potentially harmful website. The document also contains a large number of embedded links, many of which point to Shopify domains, suggesting a link farm or SEO manipulation tactic to obscure the malicious redirector.

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.com/wix?keyword=kousoku+card+battle%253A+card+hero
    • https://cdn.shopify.com/s/files/1/0431/8330/8955/files/learn_kathak_dance_video.pdf
    • https://cdn.shopify.com/s/files/1/0428/3521/4503/files/lemovizixagufo.pdf
    • https://cdn.shopify.com/s/files/1/0434/6534/3133/files/refafedigo.pdf
    • https://static.usrfiles.com/ugd/2f8cea_b36bcbd8cd814c40b9d7bf50e827c5f1.pdf
    • https://static.usrfiles.com/ugd/9ea9b6_4b828601c5784d63b253338cb606b7b0.pdf
    • https://static.usrfiles.com/ugd/b8c837_05e8dd3f692e42dd9d7b98aabf6b5b1c.pdf
    • https://static.usrfiles.com/ugd/b8c837_4efb80aefb604543b9579b418baff67c.pdf
    • https://static.usrfiles.com/ugd/b98abb_28c3abd2212e416e952190ae9a508dbe.pdf
    • https://static.usrfiles.com/ugd/b8c837_47bf84b640f6426cb4871c64fbd75f2b.pdf
    • https://static.usrfiles.com/ugd/f3cb45_2ede29f71dfb4e7ca1565548e56deb1d.pdf
    • https://static.usrfiles.com/ugd/b8c837_76d2519db81c426785d1678693ee537e.pdf
    • https://static.usrfiles.com/ugd/b8c837_331ad7e87edc4c14a3869fe8a9245b56.pdf
    • https://static.usrfiles.com/ugd/b8c837_5941800d48d84f419c6aca8870b62f18.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000072df.bin
6f7a1e371044fd32fd99023b3978d25e94dad068a161532ba574244e6b2fd54f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x72DF 4444 bytes
font_01_sfnt_off0000828b.bin
b9e23e6b76fff823e18fbeef147b13546c2591cfc7079553e80b412dcf9e944f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x828B 5252 bytes
font_02_sfnt_off00009458.bin
f5f37f67e9ab6a9244df9cd85dbabc93b6709f46cfcc5aff722211ba3f9ab620		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9458 10064 bytes

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