Malicious PDF — malware analysis report

Static analysis result for SHA-256 30da5ed0b5e84169…

MALICIOUS

PDF

43.0 KB Created: 2020-08-17 12:40:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3f0d4ca160b81b834887508eb1b5a791 SHA-1: 34619336cdd3a59847dfa16ba889d3cd3de5495f SHA-256: 30da5ed0b5e841694771c7f64c8db093d692c39f1a581441d207481d2853be6c
120 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, with a critical heuristic firing for a malicious redirector. The document body, though partially corrupted, includes text suggesting a lure related to 'accounts payable audit confirmation letter template' and points to the malicious URL. The presence of multiple Shopify-hosted PDFs suggests an attempt to blend in with legitimate content while directing users to malicious infrastructure.

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.com/pify?keyword=accounts+payable+audit+confirmation+letter+template
    • http://lijovu.millark.net/uploads/1/3/2/6/132683024/xafodujijejitux.pdf
    • https://cdn.shopify.com/s/files/1/0433/4501/9045/files/wutipew.pdf
    • https://cdn.shopify.com/s/files/1/0431/4071/0566/files/38051639860.pdf
    • https://cdn.shopify.com/s/files/1/0429/0537/0791/files/57956086833.pdf
    • https://cdn.shopify.com/s/files/1/0438/4551/7469/files/25074541973.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/poxusulijupidokubeb.pdf
    • https://cdn.shopify.com/s/files/1/0431/2052/5476/files/86116709737.pdf
    • https://cdn.shopify.com/s/files/1/0439/3913/5643/files/47937063618.pdf
    • https://cdn.shopify.com/s/files/1/0433/6749/7880/files/clasificacion_de_las_empresas_por_su_origen_de_capital.pdf
    • https://cdn.shopify.com/s/files/1/0434/5180/9957/files/lizekisululavizisoro.pdf
    • https://cdn.shopify.com/s/files/1/0429/2929/1427/files/35946521086.pdf
    • https://cdn.shopify.com/s/files/1/0433/1431/5422/files/bioenergy_textbook.pdf
    • https://cdn.shopify.com/s/files/1/0431/0899/1143/files/antologias_poeticas.pdf
    • https://cdn.shopify.com/s/files/1/0430/8795/4073/files/18826845221.pdf
    • https://cdn.shopify.com/s/files/1/0432/3803/1518/files/sekuliwupepovuro.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_off00005cd0.bin
85127cd4d75bbf6ac03df87eb65e33c2c691916dcc13a91afd1aca8fce2da094		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5CD0 5416 bytes
font_01_sfnt_off00006f1e.bin
8064cd4f322fffc686c46c02aad158090f4f22b78694f8012b2a078f6a98ca04		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6F1E 9900 bytes
font_02_sfnt_off000090bf.bin
d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378		 pdf-font-stream PDF embedded font (sfnt) at offset 0x90BF 4324 bytes

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