Malicious PDF — malware analysis report

Static analysis result for SHA-256 f8f5c1847cea5a9c…

MALICIOUS

PDF

42.1 KB Created: 2020-08-30 15:40:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5572a6b81dd7d2e9be343a0b7ac0e53f SHA-1: 2c1a4d3ca4b2ebe73088a66e3ea76e7d5c9d8581 SHA-256: f8f5c1847cea5a9c69f0d68913b642d1c9642496573534005b9c4506245a931c
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains a critical heuristic firing for a malicious redirector link, pointing to 'ttraff.com'. This URL is embedded within the document's content, disguised as a product search query. The file also exhibits characteristics of a link farm, with numerous embedded links, many of which point to Shopify domains. The primary malicious IOC is the ttraff.com URL, which likely serves as a gateway to further malicious content.

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=baby+trend+xcel+jogging+stroller+man
    • https://cdn.shopify.com/s/files/1/0439/9231/8110/files/personality_development_quiz.pdf
    • https://cdn.shopify.com/s/files/1/0436/2207/2480/files/7582916525.pdf
    • https://cdn.shopify.com/s/files/1/0431/3071/6326/files/gotetuxizonexusezuxaworap.pdf
    • https://cdn.shopify.com/s/files/1/0428/2961/1171/files/43235625449.pdf
    • https://static.usrfiles.com/ugd/cec570_85bece38d4cb47fead0e0d1fd4ab5fc4.pdf
    • https://static.usrfiles.com/ugd/b8c837_1dfe8f8888b8491f80ea938412e789d6.pdf
    • https://static.usrfiles.com/ugd/b8c837_73a80f57492649dd8f59a51421ebdead.pdf
    • https://static.usrfiles.com/ugd/b8c837_d95f58a163074b28abae0e25b4ead3ec.pdf
    • https://static.usrfiles.com/ugd/b8c837_87867f904f92416a971679d2d6c552c6.pdf
    • https://cdn.shopify.com/s/files/1/0434/5836/3558/files/bootstrap_gallery_slider_template.pdf
    • https://cdn.shopify.com/s/files/1/0434/4699/3052/files/lord_of_the_flies_historical_context.pdf
    • https://cdn.shopify.com/s/files/1/0440/2606/9157/files/lunobidu.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/40545468116.pdf
    • https://cdn.shopify.com/s/files/1/0430/7343/7847/files/12523511050.pdf
    • https://cdn.shopify.com/s/files/1/0435/4713/2063/files/sixibebegala.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_off0000660f.bin
e57c21125f801c4bfe2cc53bc0dd8ef41091ae9bc75cf4c001d1d0742f9c3883		 pdf-font-stream PDF embedded font (sfnt) at offset 0x660F 5696 bytes
font_01_sfnt_off00007965.bin
bba53bebe23b67bb3507f2bfd755571d6b8027da20cbe14a4ae01287a2df35df		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7965 10136 bytes

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