Malicious PDF — malware analysis report

Static analysis result for SHA-256 ec8f78aa9ca6b2d4…

MALICIOUS

PDF

37.6 KB Created: 2020-08-24 13:19:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ff905f0197601c62a76a7b20468a4b73 SHA-1: 7a1e169e55be43ffba453d9970d650cc5f8b66bf SHA-256: ec8f78aa9ca6b2d45a892465871574db514297674e1c5043dfde1b8d1a36dedb
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.001 Malicious Link

The PDF file contains numerous embedded links, with a critical heuristic firing for a malicious redirector. The document body, though partially garbled, includes text that appears to be a report title, likely intended to trick the user into clicking the malicious link. The primary malicious URL is https://ttraff.ru/pify?keyword=fuerza+y+luz+reporte+de+averias, which is suspected to lead to further malicious content. The file also exhibits characteristics of a link farm, with many links pointing to Shopify domains, potentially for SEO manipulation or to obscure the malicious intent.

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=fuerza+y+luz+reporte+de+averias
    • http://pupefinax.robynpforrryan.com/uploads/1/3/2/6/132696063/pegekepogon.pdf
    • https://cdn.shopify.com/s/files/1/0439/2153/9240/files/medicalizao_em_psiquiatria.pdf
    • https://cdn.shopify.com/s/files/1/0435/6079/6318/files/24613293387.pdf
    • https://cdn.shopify.com/s/files/1/0435/4143/0440/files/dolop.pdf
    • https://cdn.shopify.com/s/files/1/0430/3139/6503/files/31035070613.pdf
    • https://cdn.shopify.com/s/files/1/0433/6497/4742/files/gladiatus_expedition_guide.pdf
    • https://cdn.shopify.com/s/files/1/0438/1641/9488/files/asfixia_perinatal_medigraphic.pdf
    • https://cdn.shopify.com/s/files/1/0454/6409/2822/files/apa_referencing_style_format.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/16946396068.pdf
    • https://cdn.shopify.com/s/files/1/0434/3395/1399/files/husqvarna_automower_315x_bedienungsanleitung.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_off00004967.bin
715dfa8d08d646aaf175e88cff09e3fcb0697dfafc389417ec8aabe936e899ca		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4967 5120 bytes
font_01_sfnt_off00005afa.bin
e4f6c914de39b20f297d2ffcb7dd2bb516f06c89fd01dbdea43dfa599b7a1e44		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5AFA 14952 bytes

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