Malicious PDF — malware analysis report

Static analysis result for SHA-256 489adc6093c5ddc4…

MALICIOUS

PDF

34.6 KB Created: 2020-08-31 08:14:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: acee81f510afe1ed4fad2c3202fb2cca SHA-1: b07da27bbce882ad4f225b746774946f7d25b409 SHA-256: 489adc6093c5ddc40eab3a91c3ecb9b4d7c02b92a36c0c7b3fa347e678077422
150 Risk Score

Malware Insights

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

The PDF file contains a high number of embedded links, many pointing to Shopify domains, but one critical link directs to 'ttraff.com', identified as a malicious redirector. The ML classifier also flagged this PDF with high confidence. The presence of a link farm and a malicious redirector suggests an attempt to lure users to potentially harmful content or for SEO abuse.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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=gund+baseball+handskestol
    • https://static.usrfiles.com/ugd/b8c837_f62a8d606c314b7dadde0fff054d4273.pdf
    • https://static.usrfiles.com/ugd/7e0eb0_81fff684ad6b4f9cad1b142364eb68ad.pdf
    • https://static.usrfiles.com/ugd/f3ecbe_f3c84af2b4634b94af78cc7e9253d785.pdf
    • https://cdn.shopify.com/s/files/1/0435/1187/3688/files/plataforma_ceibal_crea_2.pdf
    • https://cdn.shopify.com/s/files/1/0435/2249/0532/files/cbse_syllabus_for_class_10_maths_2020_20.pdf
    • https://cdn.shopify.com/s/files/1/0433/4957/3784/files/27387072606.pdf
    • https://cdn.shopify.com/s/files/1/0436/3006/7865/files/canadian_visa_application_form.pdf
    • https://static.usrfiles.com/ugd/97634b_4dcfdda122e243dd903196d4049bb4ff.pdf
    • https://static.usrfiles.com/ugd/a2c2bc_942a9732dc6c43759f3e2f8c2f290719.pdf
    • https://cdn.shopify.com/s/files/1/0430/3532/8663/files/year_3_reading_comprehension_worksheets_uk.pdf
    • https://cdn.shopify.com/s/files/1/0434/0259/2410/files/attached_herewith_are_the_reports.pdf
    • https://cdn.shopify.com/s/files/1/0431/2124/6370/files/wow_classic_frost_mage_leveling_guide.pdf
    • https://cdn.shopify.com/s/files/1/0464/2753/7560/files/sheet_thickness_in_gauge_to_mm.pdf
    • https://cdn.shopify.com/s/files/1/0433/7801/6406/files/40482050816.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_off00004b69.bin
304c8916ea2ad4f32ee80082425d3a70d673455fb7211d3ceb7f7fbf526045c5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4B69 5052 bytes
font_01_sfnt_off00005c8f.bin
ab40c1992bb9d747c1d6eddd4e20a5e7dd4294f162a442afdbbaa77ee9e12170		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5C8F 9744 bytes

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