Malicious PDF — malware analysis report

Static analysis result for SHA-256 5000ebccea49efc7…

MALICIOUS

PDF

45.2 KB Created: 2020-08-26 15:20:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 674206002436ab780969bf4bcbf734d8 SHA-1: 603c00e5ef0513b4d81c82aad2b80892ad68dd53 SHA-256: 5000ebccea49efc799e8773603c41c311a525c58444973d124a55846246b7f72
120 Risk Score

Malware Insights

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

The PDF file contains a link farm designed to direct users to a malicious redirector. The primary malicious URL identified is https://ttraff.ru/pify?keyword=electric+field+inside+a+ring. The document body is heavily obfuscated, but the presence of numerous links to external PDFs, many hosted on Shopify, suggests a SEO poisoning or link farm tactic to distribute malicious content. No scripts were extracted from this sample.

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=electric+field+inside+a+ring
    • http://files.bridalextravaganzamt.com/uploads/1/3/0/7/130775592/e015b7d0af7e.pdf
    • http://nukula.paws-ruff.com/uploads/1/3/1/0/131070289/8c6b917.pdf
    • https://cdn.shopify.com/s/files/1/0431/5011/4965/files/asceticism_and_the_spirit_of_capitalism.pdf
    • https://cdn.shopify.com/s/files/1/0437/7886/7358/files/27332632607.pdf
    • https://cdn.shopify.com/s/files/1/0431/8937/1040/files/michelin_guide_hong_kong_bib_gourmand.pdf
    • https://cdn.shopify.com/s/files/1/0431/7020/1760/files/dijof.pdf
    • https://cdn.shopify.com/s/files/1/0463/2199/1837/files/afcat_2_2015_answer_key.pdf
    • https://cdn.shopify.com/s/files/1/0439/0017/4504/files/bitosalitotigesifuwedum.pdf
    • https://cdn.shopify.com/s/files/1/0430/4768/2201/files/gozilulokivuzatuzumumi.pdf
    • https://cdn.shopify.com/s/files/1/0436/1807/4786/files/fofenezomilelubokasaxatav.pdf
    • https://cdn.shopify.com/s/files/1/0429/9977/5381/files/50519826410.pdf
    • https://cdn.shopify.com/s/files/1/0434/6229/5714/files/xotetejap.pdf
    • https://cdn.shopify.com/s/files/1/0462/2768/5525/files/malipunipuxifelapisu.pdf
    • https://cdn.shopify.com/s/files/1/0434/8402/0898/files/12276216575.pdf
    • https://cdn.shopify.com/s/files/1/0431/7157/8007/files/wipomiladoziz.pdf
    • https://cdn.shopify.com/s/files/1/0430/7084/9181/files/pezorusanexun.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_off00006d0b.bin
8e37cfe860b46796b9d5cd0f8111e122bf26988b9c98c0c2d2e1f265225dd78d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6D0B 5148 bytes
font_01_sfnt_off00007e97.bin
eab77b6cefdc24e35b5326446460851005322a6445e43ac19f65b4e3855a91c5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7E97 12744 bytes

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