Malware Insights
The PDF file exhibits malicious behavior through a critical heuristic firing for PDF_MALICIOUS_REDIRECTOR_LINK, indicating it points to known malicious infrastructure. Additionally, the PDF_SEO_LINK_FARM heuristic reveals a large number of external links, suggesting an attempt to manipulate search engine results or distribute content through a link farm. The presence of a SE_LOLBIN_RUN_COMMAND heuristic suggests that the document may also contain instructions for executing commands via Windows scripting tools. The primary IOC is the redirector URL, which is likely the entry point for further malicious activity.
Heuristics 4
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PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINKPDF 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.
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Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARMSmall 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.
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Visible LOLBin command execution instruction high SE_LOLBIN_RUN_COMMANDDocument contains instructions or visible command text involving Windows script/execution tools such as PowerShell, mshta, cmd, rundll32, or regsvr32
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Embedded URL info EMBEDDED_URLOne 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=forms+of+vitamin+k
- https://static.usrfiles.com/ugd/d43733_e9fe214e6c7346a7b1c7000df61700c1.pdf
- https://static.usrfiles.com/ugd/b8c837_5af70aa5c86a47dd94597060da276b02.pdf
- https://static.usrfiles.com/ugd/b8c837_41a4300a82a9462787159e78bc8f7f84.pdf
- https://cdn.shopify.com/s/files/1/0434/4994/2176/files/calendar_october_2019_excel_template.pdf
- https://cdn.shopify.com/s/files/1/0431/0745/1042/files/35330065488.pdf
- https://cdn.shopify.com/s/files/1/0431/8180/1629/files/94284061879.pdf
- https://cdn.shopify.com/s/files/1/0432/3121/5780/files/xexotitunufidejanawa.pdf
- https://cdn.shopify.com/s/files/1/0437/8014/5313/files/autoformation_excel_2010.pdf
- https://static.usrfiles.com/ugd/ce14f3_71a7adfb38c342dfba07c4188577dfea.pdf
- https://static.usrfiles.com/ugd/b8c837_83e7b438a15d4094861e66aa57458834.pdf
- https://static.usrfiles.com/ugd/b8c837_6600a5087b08426593fa40eed2ac5b6b.pdf
- https://static.usrfiles.com/ugd/b8c837_759aa6e64ffc4c9f9be74f5447643399.pdf
- https://cdn.shopify.com/s/files/1/0434/2294/1351/files/dazuzofabaxixa.pdf
- https://cdn.shopify.com/s/files/1/0447/9765/7248/files/php_curl_post.pdf
- https://cdn.shopify.com/s/files/1/0430/0092/2261/files/tesutudovaluximolumovikux.pdf
- https://cdn.shopify.com/s/files/1/0432/7764/8027/files/purupemijafonofawifa.pdf
- https://cdn.shopify.com/s/files/1/0431/7426/4981/files/71115187353.pdf
- https://medlineplus.gov/vitamink.html
- 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.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off00006e90.bincb8394212680598268294de02c87918d08f451cf684075dc11ec87992c69c4d6 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x6E90 | 4960 bytes |
font_01_sfnt_off00007f60.binb5f27182755b8644c959d47e2ba3239ac8b70702f88422b8258e8b7a52646ea6 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x7F60 | 10304 bytes |
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