Malicious PDF — malware analysis report

Static analysis result for SHA-256 eb832bbcb317393d…

MALICIOUS

PDF

42.0 KB Created: 2020-08-24 14:22:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 51977e7b52506ffc20432469df5796db SHA-1: 21e9ad46f8a62c358cd72971e3e99d3a176c2f63 SHA-256: eb832bbcb317393daa343c51674d4cea51837337e81bcc178f7bc6bc74c84ada
120 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing indicating it links to known malicious redirector infrastructure. The document body, though heavily obfuscated, contains text related to 'Pennsylvania act 235 forms' and the malicious URL. The file also exhibits characteristics of a link farm, with numerous embedded URLs pointing to external PDF files, suggesting a broader campaign to distribute malicious content. The primary malicious URL is https://ttraff.ru/pify?keyword=pennsylvania+act+235+forms.

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=pennsylvania+act+235+forms
    • http://files.peoplemanagerssurvivalguide.com/uploads/1/3/1/4/131453577/waziwupesoxijofira.pdf
    • https://cdn.shopify.com/s/files/1/0432/8603/6635/files/minayo_pesquisa_qualitativa_livro.pdf
    • https://cdn.shopify.com/s/files/1/0463/0455/9261/files/16668839405.pdf
    • https://cdn.shopify.com/s/files/1/0431/5879/8492/files/wanomewawufijisodi.pdf
    • https://cdn.shopify.com/s/files/1/0432/9714/4990/files/jifuritos.pdf
    • https://cdn.shopify.com/s/files/1/0432/8305/4757/files/fubuvadedaxozaxedatu.pdf
    • https://cdn.shopify.com/s/files/1/0435/0086/3643/files/rexegusituvoko.pdf
    • https://cdn.shopify.com/s/files/1/0429/8162/1919/files/42489014061.pdf
    • https://cdn.shopify.com/s/files/1/0430/5528/4373/files/fewifowomu.pdf
    • https://cdn.shopify.com/s/files/1/0430/4296/3613/files/duvowoxurakoxotuzojez.pdf
    • https://cdn.shopify.com/s/files/1/0430/4207/8877/files/vebux.pdf
    • https://cdn.shopify.com/s/files/1/0427/5883/2294/files/75842886866.pdf
    • https://cdn.shopify.com/s/files/1/0435/3202/6008/files/55828633235.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_off00006426.bin
d3d6fe1294dc757a35df5e507484498940e902252ab98232b5d01ae1e2f8f9bb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6426 5612 bytes
font_01_sfnt_off00007734.bin
f0418866b25ee96077f5edc0d903c584a99007199fa0395d4dee0774ba8efb01		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7734 10624 bytes

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