Malicious PDF — malware analysis report

Static analysis result for SHA-256 f3efb5e5d76ee453…

MALICIOUS

PDF

34.6 KB Created: 2020-08-27 18:27:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5308c9c1f004205605b2cdb69f825b3a SHA-1: 53b86171f866db17cf3223502cfb29ee1d0acfff SHA-256: f3efb5e5d76ee453cdd0917ad050b8312be75f8bf15602ca78dc74814c56b2f6
120 Risk Score

Malware Insights

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

The PDF document contains a mass of external links, many of which point to a link farm hosted on Shopify. One of the primary links, presented as a "Wii error 32004", redirects to a malicious URL. This indicates a social engineering attempt to trick users into visiting potentially harmful 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/pify?keyword=wii+error+32004
    • http://files.darvanadoulaservices.com/uploads/1/3/0/7/130775959/godujabu-gowesor-rizofokezopa.pdf
    • http://files.dssala.org/uploads/1/3/2/6/132695568/kujowaka.pdf
    • http://files.christyintheclassroom.org/uploads/1/3/1/3/131398333/vazuko.pdf
    • http://files.graysong.com/uploads/1/3/0/7/130739480/8824830.pdf
    • http://kugod.mrsmcbrideskindergarten.com/uploads/1/3/1/0/131070487/da71795.pdf
    • https://cdn.shopify.com/s/files/1/0440/6296/5912/files/83868300433.pdf
    • https://cdn.shopify.com/s/files/1/0431/6128/8868/files/zizalifivatijatovejugis.pdf
    • https://cdn.shopify.com/s/files/1/0439/3769/3851/files/jazonasakukizonawagazi.pdf
    • https://cdn.shopify.com/s/files/1/0431/6381/1997/files/vaxebulogodujepumajame.pdf
    • https://cdn.shopify.com/s/files/1/0430/3529/5905/files/xikomeposavitip.pdf
    • https://cdn.shopify.com/s/files/1/0436/0654/0445/files/kidedejejufumunorere.pdf
    • https://cdn.shopify.com/s/files/1/0432/5244/9435/files/25037925130.pdf
    • https://cdn.shopify.com/s/files/1/0446/6117/8521/files/irs_form_6252.pdf
    • https://cdn.shopify.com/s/files/1/0430/5318/7221/files/nizimepadoxa.pdf
    • https://cdn.shopify.com/s/files/1/0434/1966/4542/files/probability_distribution_notes.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_off00004c05.bin
bf5020fe8671cd49934c1b6dddc8741a56ba2035d544fb7177ea29df175c328f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4C05 4796 bytes
font_01_sfnt_off00005c84.bin
cd3a64f3eb63556736d6536506da56471d540672bb00988c001eeefd75b5a33e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5C84 9748 bytes

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