Malicious PDF — malware analysis report

Static analysis result for SHA-256 dfb91e5f43076802…

MALICIOUS

PDF

30.8 KB Created: 2020-08-17 00:27:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7292e11b20fab41f2412c2a4d3d651f2 SHA-1: c985da0d4ecd06b3516b725dc6d91deb0baf201c SHA-256: dfb91e5f4307680285e932b7281cd9695f79a1710bfbb56a32e90d659a38e318
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.001 User Execution: Malicious Link

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.com'. Additionally, it exhibits characteristics of a PDF SEO link farm, with numerous embedded links, many pointing to Shopify domains, but the primary malicious link is to 'ttraff.com'. The document body, though heavily obfuscated, contains the same URL as the malicious redirector, suggesting the document's purpose is to trick the user into visiting this malicious site.

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/pify?keyword=dolce+amore+song+your+love+video
    • http://files.porthcawlmuseum.com/uploads/1/3/0/7/130739719/4416333.pdf
    • https://cdn.shopify.com/s/files/1/0429/3797/4950/files/sakiwigoba.pdf
    • https://cdn.shopify.com/s/files/1/0432/0378/8964/files/curso_de_arcgis_10._5.pdf
    • https://cdn.shopify.com/s/files/1/0431/7400/2837/files/19852459744.pdf
    • https://cdn.shopify.com/s/files/1/0431/8996/0865/files/80322370100.pdf
    • https://cdn.shopify.com/s/files/1/0430/4823/9257/files/5923291652.pdf
    • https://cdn.shopify.com/s/files/1/0435/2504/6423/files/66948374942.pdf
    • https://cdn.shopify.com/s/files/1/0431/6558/1468/files/cat_iii_movie.pdf
    • https://cdn.shopify.com/s/files/1/0429/1962/4870/files/dalamikipexawanozudigo.pdf
    • https://cdn.shopify.com/s/files/1/0428/2312/3100/files/zigoluluvijev.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_off00003d55.bin
85ff6bf9e3fa0e76fccd42c17d5f0906e2b0efb83888b00ddd57badef93b8e3d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x3D55 5420 bytes
font_01_sfnt_off00004fb2.bin
4918f9fca2aedef87a9672353da1931b9c24ab701634b8dc80d676ceafa4fa9a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4FB2 9124 bytes

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