Malicious PDF — malware analysis report

Static analysis result for SHA-256 cb4ce8d8e4c442a4…

MALICIOUS

PDF

43.9 KB Created: 2020-08-08 08:01:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 48a65d9e6066c8e24f082de1231d8ac5 SHA-1: 682bf6bd804b419ad85739e25864efee798ee81a SHA-256: cb4ce8d8e4c442a4e11c5d55420dc4583b8e50c2fcb7afb3c1645fea18f2800a
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.001 Malicious Link T1059.001 PowerShell

The PDF contains a critical heuristic firing for a malicious redirector link, specifically 'https://ttraff.cc/pify?keyword=despacito+ukulele+pdf'. This indicates the document is designed to redirect users to potentially harmful content. Additionally, the PDF exhibits characteristics of an SEO link farm, embedding numerous links to other PDFs, likely to manipulate search engine results or distribute further malicious content. The document body contains garbled text but also includes the primary malicious URL, reinforcing the redirection attack pattern.

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.cc/pify?keyword=despacito+ukulele+pdf
    • http://files.pinkturtledesigns.co.uk/uploads/1/3/0/9/130969446/fogokopumaza-taviveriwakar-febox.pdf
    • http://files.homeopathhealer.com/uploads/1/3/0/7/130776850/7878817.pdf
    • http://files.wooddragonadvising.org/uploads/1/3/2/6/132681062/1373169.pdf
    • https://cdn.shopify.com/s/files/1/0431/5247/4267/files/86293250180.pdf
    • https://cdn.shopify.com/s/files/1/0428/7807/5036/files/43821950023.pdf
    • https://cdn.shopify.com/s/files/1/0432/2403/9592/files/jedebarinegezezewemupamez.pdf
    • https://cdn.shopify.com/s/files/1/0430/9535/9642/files/7891566015.pdf
    • https://cdn.shopify.com/s/files/1/0431/8353/8331/files/43770861095.pdf
    • https://cdn.shopify.com/s/files/1/0432/0421/4942/files/69006238129.pdf
    • https://cdn.shopify.com/s/files/1/0431/5945/3860/files/12284070433.pdf
    • https://cdn.shopify.com/s/files/1/0431/7764/0092/files/vawesoxoki.pdf
    • https://cdn.shopify.com/s/files/1/0430/6993/1673/files/emblems_for_battlefield_4_com.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_off000063a7.bin
4a7ed1b1fa2711d5a145fa3e40bf958e16dec82645d9f60b12b348fd9295d5dc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x63A7 5116 bytes
font_01_sfnt_off0000752e.bin
6fdcb2cb39a7062c7eb0cb9311673a93f41d6b02d07f8cf9085f3cf6572922c0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x752E 13784 bytes

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