Malicious PDF — malware analysis report

Static analysis result for SHA-256 c22e12c3af127883…

MALICIOUS

PDF

58.1 KB Created: 2020-08-29 19:59:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: bfb049f59d1ee7159f98018a8e65a01f SHA-1: 4d5f19042a4c87790e04b5244a3c5baf79033097 SHA-256: c22e12c3af127883f3c7f0cc269a8444392b3aea48dc2ba0f738aac9c3ee8969
150 Risk Score

Malware Insights

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

The PDF file was flagged as malicious due to the presence of a link to a known malicious redirector (ttraff.ru). The document body contains obfuscated text and multiple links, many pointing to Shopify domains, but one critical link directs to the malicious ttraff.ru domain. This suggests a lure designed to redirect users to a harmful destination, likely for phishing or malware delivery.

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=r448a+line+sizing
    • https://cdn.shopify.com/s/files/1/0439/3864/4123/files/580464287.pdf
    • https://cdn.shopify.com/s/files/1/0429/8460/3801/files/56900305689.pdf
    • https://cdn.shopify.com/s/files/1/0437/5199/7592/files/ronurupogozuwejovozuxode.pdf
    • https://cdn.shopify.com/s/files/1/0438/8392/1563/files/56056473287.pdf
    • https://cdn.shopify.com/s/files/1/0436/3714/5753/files/1006451871.pdf
    • https://static.usrfiles.com/ugd/b8c837_301c36b947394c2687d7119b95287eb0.pdf
    • https://static.usrfiles.com/ugd/32acb1_ced682face324d3b8fad2c2f73c92dc3.pdf
    • https://static.usrfiles.com/ugd/d775a9_23b272a329254dbabab72a85e1ccdd2a.pdf
    • https://cdn.shopify.com/s/files/1/0429/0415/8364/files/lonusilakifivezexivaz.pdf
    • https://cdn.shopify.com/s/files/1/0430/7409/3217/files/mizorimalovubis.pdf
    • https://cdn.shopify.com/s/files/1/0459/6593/4759/files/wuterulikolevodufaw.pdf
    • https://cdn.shopify.com/s/files/1/0432/1103/0683/files/94264160135.pdf
    • https://cdn.shopify.com/s/files/1/0434/2353/1158/files/gastrulacion_en_erizo_de_mar.pdf
    • https://cdn.shopify.com/s/files/1/0432/9635/8565/files/alcatel_lucent_omnipcx_office_rce_small.pdf
    • https://cdn.shopify.com/s/files/1/0431/5385/0524/files/funijizigiwen.pdf
    • https://cdn.shopify.com/s/files/1/0437/3538/4225/files/manhattan_logic_games.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_off0000a732.bin
841217ca7dfb7ac6a9322e13a12a64a6827fbd32d3d2065466be32ea4b0c882f		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA732 5096 bytes
font_01_sfnt_off0000b8a3.bin
690e656b0dfe3883c5281913475aa095b4b5575c7bbb40dcafce13c102d27d36		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB8A3 10476 bytes

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