Malicious PDF — malware analysis report

Static analysis result for SHA-256 b079b6b1be61f8ae…

MALICIOUS

PDF

43.8 KB Created: 2020-08-31 02:18:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5751e43bf0ca449af2bfa5f3a93f6113 SHA-1: fff20c37a9d0122bdfb4c76a87a1e80d2ca9a5bc SHA-256: b079b6b1be61f8aec3dd3aeb4aa66031c836efa617f39921b5c2294b414f7c1f
120 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link, which is also present in the document body. This link, 'https://ttraff.club/wix?keyword=libros+sobre+lenguaje+corporal+seduccion', is designed to redirect users to potentially harmful content. The file also exhibits characteristics of a link farm, with numerous embedded URLs pointing to external PDF documents, suggesting an attempt to manipulate search engine results or distribute further malicious content. No scripts were extracted from this sample.

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=libros+sobre+lenguaje+corporal+seduccion
    • https://static.usrfiles.com/ugd/b8c837_63cf3ecee883452bb691157740fb2403.pdf
    • https://static.usrfiles.com/ugd/45fd81_4744e6628188413d8382083ed71ff94e.pdf
    • https://static.usrfiles.com/ugd/e7e4a0_a7098908a6974250948d7f126b7b3d6b.pdf
    • https://static.usrfiles.com/ugd/b8c837_17772981c6da43f3936d302466e8daf8.pdf
    • https://static.usrfiles.com/ugd/ae059d_2cd37143cb2d4d628ed4dceb1622833e.pdf
    • https://static.usrfiles.com/ugd/e2c250_daa69fc5304e4c61abbf7c632f5ef5a8.pdf
    • https://static.usrfiles.com/ugd/760101_b0b4cee5bb9640b1972d361dc7cd7214.pdf
    • https://static.usrfiles.com/ugd/12f4eb_59ee793ae8e64b43a85ea9bd4c809f59.pdf
    • https://static.usrfiles.com/ugd/b8c837_c190173c940b48559d2cda89728aa1a2.pdf
    • https://cdn.shopify.com/s/files/1/0440/4723/7285/files/kosigodugul.pdf
    • https://cdn.shopify.com/s/files/1/0434/4401/1168/files/joperalexekeri.pdf
    • https://cdn.shopify.com/s/files/1/0429/3361/6803/files/60788372327.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_off0000697e.bin
567a6ba8d37cc2600e6666873ea844a771a701cd2f4ac415e85b91264b65f1bf		 pdf-font-stream PDF embedded font (sfnt) at offset 0x697E 5400 bytes
font_01_sfnt_off00007bdf.bin
352b98f771ae48d60ac0dfd2ae6f1d24b30039629256ace5abb4d5023d247a8e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7BDF 11380 bytes

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