Malicious PDF — malware analysis report

Static analysis result for SHA-256 f8097004e6c047bb…

MALICIOUS

PDF

35.9 KB Created: 2020-08-30 00:09:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ffdd629b772524639f4b435555dccec6 SHA-1: d5bc92ab978f87ccbc62ab321ce36efd63d93368 SHA-256: f8097004e6c047bbbdd8a1638c692e6c27e02608da3b7f59f7d9fbad9be0626f
120 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.com/wix?keyword=borse+per+carpentieri+con+bretelle'. This indicates an attempt to lure the user to a potentially harmful site. Additionally, the PDF exhibits characteristics of a link farm, with numerous embedded URLs, including one to 'https://cdn.shopify.com/s/files/1/0434/3123/1655/files/jurazavizasisemeg.pdf', suggesting a broader distribution or SEO-poisoning tactic. No scripts were extracted, limiting the analysis of direct payload execution.

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/wix?keyword=borse+per+carpentieri+con+bretelle
    • https://cdn.shopify.com/s/files/1/0434/3123/1655/files/jurazavizasisemeg.pdf
    • https://cdn.shopify.com/s/files/1/0431/7901/6360/files/23525585563.pdf
    • https://cdn.shopify.com/s/files/1/0431/8711/0037/files/ravifopetatakabijisibat.pdf
    • https://cdn.shopify.com/s/files/1/0440/2115/3957/files/88976059473.pdf
    • https://cdn.shopify.com/s/files/1/0432/3121/5780/files/30764443853.pdf
    • https://cdn.shopify.com/s/files/1/0433/9869/3013/files/alkyne_mechanism_cheat_sheet.pdf
    • https://cdn.shopify.com/s/files/1/0432/3390/2760/files/360_loan_amortization_schedule_excel_template.pdf
    • https://static.usrfiles.com/ugd/cf79db_21c7ecfb0fdc45a0979c8e542584d028.pdf
    • https://static.usrfiles.com/ugd/b8c837_b12b74ad28444633985ce1672be97810.pdf
    • https://static.usrfiles.com/ugd/bf650e_c36a839c9c4541f2af4f0e99ec570840.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_off00004bf7.bin
d51d0a42c56ae19c025d524ca24ad435cbdfa65a1ad90ff08183988710cd1a5a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4BF7 5116 bytes
font_01_sfnt_off00005d61.bin
1bdd5bdcebfb2255ececcafc41029549396910949cc465a49b44c4b8f5ef1153		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5D61 11856 bytes

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