Malicious PDF — malware analysis report

Static analysis result for SHA-256 f76b0e3d6aa66623…

MALICIOUS

PDF

59.1 KB Created: 2020-08-30 22:19:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5ce5825ebbffb5e09f935d243d7731a8 SHA-1: 1288f27aea5f2afaf4b4dea35c87ca5a08f58d07 SHA-256: f76b0e3d6aa66623cade0ad4c8756a6bddd138353c5d7db1e9a5b30742deb838
120 Risk Score

Malware Insights

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

The PDF contains numerous links, many of which point to a link farm designed to generate SEO traffic. One prominent link, 'https://ttraff.club/wix?keyword=mujer+tauro+en+la+cama', is identified as a malicious redirector. The document body, though heavily obfuscated, contains this URL, suggesting the primary intent is to redirect users to malicious infrastructure.

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.club/wix?keyword=mujer+tauro+en+la+cama
    • https://cdn.shopify.com/s/files/1/0461/7437/1993/files/dealing_with_rejection_worksheets.pdf
    • https://cdn.shopify.com/s/files/1/0437/4190/5045/files/ranageponiseweved.pdf
    • https://cdn.shopify.com/s/files/1/0437/6661/2130/files/mikemijirezagunopugaxur.pdf
    • https://static.usrfiles.com/ugd/865d50_89744cca5e304f628a8d197bb1813397.pdf
    • https://static.usrfiles.com/ugd/38bf1f_7c3555dc275e4eab9e447a9783cf6609.pdf
    • https://static.usrfiles.com/ugd/b52961_60f56f3d889043689a11ebc12cf047af.pdf
    • https://static.usrfiles.com/ugd/b8c837_54a8aafbb542419fa5888ecb6c672759.pdf
    • https://static.usrfiles.com/ugd/764aaa_914a102937dd4b7eb370c0bdae2d5b49.pdf
    • https://static.usrfiles.com/ugd/b8c837_0ba8fa64ff2146f39c01d83a7ed68bbf.pdf
    • https://static.usrfiles.com/ugd/b8c837_12985fe92d964c679b808b2fc07d15e6.pdf
    • https://static.usrfiles.com/ugd/b8c837_f597cbd6716a4d549b8655d98ca9ebd9.pdf
    • https://static.usrfiles.com/ugd/0d002d_28852f0e5662453d98b96c0cef65791c.pdf
    • https://static.usrfiles.com/ugd/9f6a24_85bbe32c13a743d6bba5c569b54664d5.pdf
    • https://static.usrfiles.com/ugd/d902bb_8d578d2bbd6b4fae8c2d9266c24c20b4.pdf
    • https://static.usrfiles.com/ugd/99965f_4513d6f53dd249cebc9ff76195c4c4ec.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_off0000a846.bin
649024fdc126d96a2e79352ad82529a2cb733d0a387eaf40a7f1dcb1be66e04d		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA846 4848 bytes
font_01_sfnt_off0000b8b4.bin
87717c0964b8142f6641a8869b3bf30281511a7f62832159060bf5c3149df2d2		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB8B4 11552 bytes

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