Malicious PDF — malware analysis report

Static analysis result for SHA-256 ec66def9f3a1a9d0…

MALICIOUS

PDF

37.0 KB Created: 2020-08-30 19:38:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5e04ddb19c35d75b329f526d6b5b98ee SHA-1: d6ab6a3eab288189a7d2e4eeee84ca66c2c22b36 SHA-256: ec66def9f3a1a9d07f002ffc095382c25ae7406b14ebc34e24143ff3d2759a37
120 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, many pointing to Shopify domains, which is characteristic of a link farm designed to manipulate search engine results or lure users. One critical heuristic identified a link to a known malicious redirector at 'https://ttraff.com/wix?keyword=shroud+reaction+time'. This suggests the document's primary purpose is to redirect users to malicious infrastructure, likely for further exploitation or phishing.

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=shroud+reaction+time
    • https://cdn.shopify.com/s/files/1/0437/0546/7035/files/36032462520.pdf
    • https://cdn.shopify.com/s/files/1/0433/3377/9611/files/zumunisugikezadiz.pdf
    • https://cdn.shopify.com/s/files/1/0429/2893/0979/files/lonely_planet_guides_nz.pdf
    • https://cdn.shopify.com/s/files/1/0427/9618/7815/files/beginning_programming_with_java_for_dummies_free.pdf
    • https://cdn.shopify.com/s/files/1/0430/9165/6855/files/52096905700.pdf
    • https://cdn.shopify.com/s/files/1/0430/5282/6773/files/tolutofurid.pdf
    • https://cdn.shopify.com/s/files/1/0434/3323/0488/files/xifopoxigujibunaw.pdf
    • https://cdn.shopify.com/s/files/1/0431/8652/0224/files/5970920314.pdf
    • https://cdn.shopify.com/s/files/1/0430/9752/2329/files/toxukoxolesapor.pdf
    • https://cdn.shopify.com/s/files/1/0433/4986/8712/files/macros_in_excel_2020_tutorial_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0434/0675/3948/files/atech_navigator_user_manual.pdf
    • https://cdn.shopify.com/s/files/1/0437/2535/7210/files/55382313296.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/82191842179.pdf
    • https://cdn.shopify.com/s/files/1/0432/7063/5680/files/cellar_bar_boscombe_gig_guide.pdf
    • https://cdn.shopify.com/s/files/1/0439/3569/5016/files/17935890853.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_off00005283.bin
a1d56548bb151fb52502ab2b864bf4ed4d6ea824311c992059f48f291a9300ae		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5283 5072 bytes
font_01_sfnt_off00006392.bin
9aa205eb420964f5865864a0db83a112dad0b04aee9c2f90aa372ce8cba467da		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6392 11156 bytes

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