Malicious PDF — malware analysis report

Static analysis result for SHA-256 c1052d660fb090a3…

MALICIOUS

PDF

43.9 KB Created: 2020-08-30 21:33:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 48614aa91b8d1754670252b26a8bba26 SHA-1: 002f67e8b236219c7532516b91f3971e3a384d5b SHA-256: c1052d660fb090a30e935a7c3d761e7cdae392f97b32ad59f62c8b479de91cc4
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 'https://ttraff.ru/wix?keyword=tanzimat+1.+d%25C3%25B6nem+sanat%25C3%25A7%25C4%25B1lar%25C4%25B1'. This URL is likely used to redirect the user to a malicious site. The document body, though partially corrupted, contains text related to historical artists, suggesting a lure to disguise the malicious intent. The presence of numerous embedded URLs, many hosted on Shopify, indicates a link farm strategy, likely to improve search engine ranking for 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.ru/wix?keyword=tanzimat+1.+d%25C3%25B6nem+sanat%25C3%25A7%25C4%25B1lar%25C4%25B1
    • https://cdn.shopify.com/s/files/1/0438/2470/9782/files/27566060408.pdf
    • https://cdn.shopify.com/s/files/1/0431/2891/4074/files/81758920839.pdf
    • https://cdn.shopify.com/s/files/1/0430/9096/8729/files/98962253030.pdf
    • https://cdn.shopify.com/s/files/1/0432/3885/0728/files/81333015441.pdf
    • https://cdn.shopify.com/s/files/1/0436/4081/5774/files/vukegedoluwejaxobipoje.pdf
    • https://cdn.shopify.com/s/files/1/0449/1057/5771/files/autocad_plant_3d_2011_free.pdf
    • https://cdn.shopify.com/s/files/1/0431/7967/1718/files/73773017948.pdf
    • https://cdn.shopify.com/s/files/1/0450/3601/1678/files/47129547670.pdf
    • https://cdn.shopify.com/s/files/1/0436/0906/3582/files/39473682740.pdf
    • https://cdn.shopify.com/s/files/1/0450/4292/5726/files/ace_academy_2020_test_series.pdf
    • https://cdn.shopify.com/s/files/1/0429/9977/5381/files/27955015592.pdf
    • https://cdn.shopify.com/s/files/1/0428/2079/6583/files/38152851195.pdf
    • https://cdn.shopify.com/s/files/1/0428/9812/9059/files/jidinivijego.pdf
    • https://cdn.shopify.com/s/files/1/0430/3277/2757/files/filuxagetuvudox.pdf
    • https://cdn.shopify.com/s/files/1/0448/5398/5442/files/nvidia_geforce_6150se_nforce_430_driver.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/
    • https://cdn.shopify.com

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006a66.bin
cead020f0baffe1f308f40a1258737edb1d098f1cb407307304faff3541b349e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6A66 5408 bytes
font_01_sfnt_off00007c79.bin
2e5a6db57f2dc324a8e1b2e6644cfc904cd63cbbc5b952a1771dfa00096a6f91		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7C79 11552 bytes

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