Malicious PDF — malware analysis report

Static analysis result for SHA-256 d5d6e50cbff5794d…

MALICIOUS

PDF

113.4 KB Created: 2020-08-30 02:30:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 497918593dd039c30ffcb04a76d201fd SHA-1: 2ea70cda23fe1aabfa3bfdc5b486e471eae91366 SHA-256: d5d6e50cbff5794d296c1d26b7a5ac80c1a0fb2cbcd4b1dd321cbda0d54f2d59
120 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to a link farm hosted on Shopify. One of these links, https://ttraff.cc/wix?keyword=quimica+de+chang+10+edicion, is identified as a malicious redirector. The document body, though heavily obfuscated, contains this malicious URL, suggesting the primary intent is to redirect users to malicious infrastructure.

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.cc/wix?keyword=quimica+de+chang+10+edicion
    • https://cdn.shopify.com/s/files/1/0434/3191/9765/files/56139507731.pdf
    • https://cdn.shopify.com/s/files/1/0432/5870/8136/files/depivegugufuxiv.pdf
    • https://cdn.shopify.com/s/files/1/0429/1526/6723/files/95917301983.pdf
    • https://cdn.shopify.com/s/files/1/0431/8996/0865/files/xapizekazotatazika.pdf
    • https://cdn.shopify.com/s/files/1/0462/7559/2352/files/company_tax_return_excel_template.pdf
    • https://cdn.shopify.com/s/files/1/0463/6960/3739/files/sujunejuzez.pdf
    • https://static.usrfiles.com/ugd/7f16bd_c91c24660e9e4ec8b948aa386dd4899a.pdf
    • https://static.usrfiles.com/ugd/b8c837_9eeb3aaaae98436080e70968a93aac17.pdf
    • https://cdn.shopify.com/s/files/1/0432/4445/4056/files/jaginebugudowigagi.pdf
    • https://cdn.shopify.com/s/files/1/0438/2385/7824/files/10074043002.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/bepojarovizezeba.pdf
    • https://cdn.shopify.com/s/files/1/0439/0731/7912/files/31488104062.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_off00017271.bin
d2a133644f2d7d5af86267314ab7c2186fc9c1c083a52f357b937c7674b098ff		 pdf-font-stream PDF embedded font (sfnt) at offset 0x17271 5304 bytes
font_01_sfnt_off0001845c.bin
2b505ffa11d08a4f1df4c26d6fd22679aa08e91fc7eafd274e0a691e42424f44		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1845C 17544 bytes

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