Malicious PDF — malware analysis report

Static analysis result for SHA-256 ea2c96f726fb0d6d…

MALICIOUS

PDF

43.3 KB Created: 2020-08-16 17:16:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 008966e15ba9939c2e0ec0c4ef386560 SHA-1: fbec2eb9989363f8d257abd2dfc6befcaacfeba2 SHA-256: ea2c96f726fb0d6dc53881c7bb8b58ecc246daf9acb6031d86bf58b801b78b18
128 Risk Score

Malware Insights

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

The PDF file contains a lure related to billing invoices, as indicated by the 'SE_INVOICE_LURE' heuristic and the document body text. It embeds multiple external links, with one identified as a malicious redirector at 'https://ttraff.cc/pify?keyword=billing+invoice+template+excel'. This redirector likely leads to further malicious content or exploits. The PDF also contains a link farm pointing to numerous PDFs hosted on Shopify, with one specific PDF 'butababifigetodiba.pdf' being highlighted.

Heuristics 4

  • 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.
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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/pify?keyword=billing+invoice+template+excel
    • http://files.fenlandfives.co.uk/uploads/1/3/2/7/132740836/0c8c7.pdf
    • http://pegumulem.margaritatovar.com/uploads/1/3/0/8/130813765/fevelegipado-dosagunib-tigedujew.pdf
    • https://cdn.shopify.com/s/files/1/0432/7964/6878/files/butababifigetodiba.pdf
    • https://cdn.shopify.com/s/files/1/0433/0923/6374/files/bazanusojiturofikew.pdf
    • https://cdn.shopify.com/s/files/1/0427/7587/1654/files/najazepaxoxokulaxerudo.pdf
    • https://cdn.shopify.com/s/files/1/0440/6503/0309/files/brooker_biology_3rd_edition_free.pdf
    • https://cdn.shopify.com/s/files/1/0436/9353/9478/files/alimentacion_saludable_en_el_escolar.pdf
    • https://cdn.shopify.com/s/files/1/0430/4162/0119/files/oxford_word_skills_basic_answer_key.pdf
    • https://cdn.shopify.com/s/files/1/0427/4041/6678/files/zozulasumef.pdf
    • https://cdn.shopify.com/s/files/1/0431/4942/6839/files/gexabefop.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/pagujusevidunevaf.pdf
    • https://cdn.shopify.com/s/files/1/0429/5265/5002/files/7188883109.pdf
    • https://cdn.shopify.com/s/files/1/0436/4953/2069/files/44749184183.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_off00006d03.bin
40497709a85ffac532f65e5663ee78e0fb3eccffe4cfc88fa3492a1c302ec7cc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6D03 5156 bytes
font_01_sfnt_off00007e81.bin
0767125b895c9d45e9aee259c3306655e12ee266e39d565119d6ab19b5087568		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7E81 10060 bytes

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