Malicious PDF — malware analysis report

Static analysis result for SHA-256 7e86d73cf936a3b8…

MALICIOUS

PDF

42.7 KB Created: 2020-08-31 08:19:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 47438adb8b15d599c26f039c31e8f8c1 SHA-1: 6f07f028de3acd9de3ff256d33ba9ca146d94b87 SHA-256: 7e86d73cf936a3b8fd5fdd0f8e8fc4f7ed8694248159e7cb70aafb2677d2024e
120 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link, which is also present in the document body. This link points to a URL that is likely used to redirect users to malicious content. The file also contains a large number of embedded links to Shopify, suggesting a link farm or SEO manipulation tactic. 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.link/wix?keyword=exercicios+resolvidos+de+rede+ramificada
    • https://cdn.shopify.com/s/files/1/0433/0032/3478/files/95862695938.pdf
    • https://cdn.shopify.com/s/files/1/0438/0993/1426/files/disuxupifupexafimafog.pdf
    • https://cdn.shopify.com/s/files/1/0428/6509/8918/files/partes_de_moldes_para_inyeccion_de_p.pdf
    • https://cdn.shopify.com/s/files/1/0429/2630/9535/files/zojedimi.pdf
    • https://cdn.shopify.com/s/files/1/0429/7120/1695/files/59606751005.pdf
    • https://cdn.shopify.com/s/files/1/0459/2471/2597/files/rebigimuxumepewimev.pdf
    • https://cdn.shopify.com/s/files/1/0434/6390/1334/files/anticipatory_bail_in_up.pdf
    • https://cdn.shopify.com/s/files/1/0428/0070/9791/files/73453649610.pdf
    • https://cdn.shopify.com/s/files/1/0437/4478/8634/files/dopiwabimo.pdf
    • https://cdn.shopify.com/s/files/1/0435/9297/4499/files/accounting_ratios_explained.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/57790570823.pdf
    • https://cdn.shopify.com/s/files/1/0429/9508/9559/files/18th_amendment_to_the_constitution_of_pakistan.pdf
    • https://cdn.shopify.com/s/files/1/0431/2052/5469/files/manualidades_faciles_para_vender.pdf
    • https://cdn.shopify.com/s/files/1/0437/7165/8389/files/32066024580.pdf
    • https://cdn.shopify.com/s/files/1/0433/9941/3925/files/45093678168.pdf
    • https://cdn.shopify.com/s/files/1/0435/1452/7908/files/zizugunoxetololumunasuzoj.pdf
    • https://cdn.shopify.com/s/files/1/0430/9201/7305/files/rumulimakurekitoviru.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_off000063c7.bin
a7e453990aa140a0b4cb1202484fca5c7acf0075afcc0fffcb726ef7287b7875		 pdf-font-stream PDF embedded font (sfnt) at offset 0x63C7 5252 bytes
font_01_sfnt_off0000758f.bin
184ad039579f90f3b35f4fc8d636d41ae0e77ef84e68adc034592f8db6b26fb7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x758F 12792 bytes

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