Malicious PDF — malware analysis report

Static analysis result for SHA-256 377486e2e19ab3f5…

MALICIOUS

PDF

40.5 KB Created: 2020-09-01 00:43:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a247d21215228110b1c9e5bd8ee03d1b SHA-1: e838c07df442284d2e4ccb321b83d1b842166307 SHA-256: 377486e2e19ab3f5ef64228b403a9c4d5bdb29f1603db64686c72b5dada9fca0
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a critical heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.ru/wix?keyword=cdcr+uniform+store+near+me'. This URL is presented within the document body, disguised as a search result. The PDF also exhibits characteristics of a link farm, with numerous embedded links, many pointing to Shopify domains, likely for SEO manipulation or to host further malicious content. The ML classifier strongly flags this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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=cdcr+uniform+store+near+me
    • https://cdn.shopify.com/s/files/1/0428/3806/5308/files/topikutedoduvu.pdf
    • https://cdn.shopify.com/s/files/1/0435/8524/1256/files/6862704699.pdf
    • https://cdn.shopify.com/s/files/1/0428/2351/6323/files/tv_now_guide_nz_city.pdf
    • https://cdn.shopify.com/s/files/1/0436/6503/1321/files/55844604757.pdf
    • https://cdn.shopify.com/s/files/1/0436/0654/0445/files/minecraft_tlauncher_android.pdf
    • https://cdn.shopify.com/s/files/1/0431/8278/4676/files/23041638579.pdf
    • https://cdn.shopify.com/s/files/1/0431/0423/9770/files/az_cardinals_schedule.pdf
    • https://cdn.shopify.com/s/files/1/0432/7804/1244/files/vajevexigipufugolidugos.pdf
    • https://cdn.shopify.com/s/files/1/0431/3861/3399/files/rumafot.pdf
    • https://cdn.shopify.com/s/files/1/0431/5791/3754/files/taric_build_guide_aram.pdf
    • https://cdn.shopify.com/s/files/1/0436/0686/8131/files/grievance_letter_bullying_workplace_template.pdf
    • https://cdn.shopify.com/s/files/1/0428/1604/5222/files/15423410522.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000052c0.bin
66892090e3d5f9febc915d978b1be035ed394d37c539a0d304c84135440e88d5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x52C0 5040 bytes
font_01_sfnt_off000063c6.bin
0e15b777f5db1ee9d2d869a9f64e372e5ef309fb9242dc4cd70c82fab2890c90		 pdf-font-stream PDF embedded font (sfnt) at offset 0x63C6 10356 bytes
font_02_sfnt_off00008748.bin
d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8748 4324 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.