Malicious PDF — malware analysis report

Static analysis result for SHA-256 edbd820607f89d5b…

MALICIOUS

PDF

32.8 KB Created: 2020-08-17 03:01:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7b989caccefad5ba2df9c32f56a13bd2 SHA-1: ed5b2ee315cd5747bf9efbd6479f2e187302b069 SHA-256: edbd820607f89d5b385fb284ed6b697167fdee4a897925f30f8a6b1610e7a3a1
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, which is also present in the document body. This link, 'https://ttraff.cc/pify?keyword=sds+sheet+for+lysol+disinfectant+spray', is designed to lure users to malicious infrastructure. The file also exhibits characteristics of a link farm, with numerous embedded URLs pointing to various PDF files, likely for SEO poisoning or to obscure the malicious redirector. 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.cc/pify?keyword=sds+sheet+for+lysol+disinfectant+spray
    • http://fuwizoz.theclayloft.co.uk/uploads/1/3/0/9/130969204/sawigasunawokaf-lirofivemun.pdf
    • http://files.printsbtt.com/uploads/1/3/0/8/130874610/xutibezox.pdf
    • http://files.visaofoundation.org/uploads/1/3/1/3/131384424/d243f7d143882.pdf
    • http://manarave.silkekbader.com/uploads/1/3/0/8/130815017/puludumo-fikugoxesexixuj-nojodutazapij.pdf
    • https://cdn.shopify.com/s/files/1/0431/2589/9426/files/pdf_js_example.pdf
    • https://cdn.shopify.com/s/files/1/0429/1641/3607/files/dolebelat.pdf
    • https://cdn.shopify.com/s/files/1/0431/0895/8362/files/79443165553.pdf
    • https://cdn.shopify.com/s/files/1/0435/1806/6843/files/google_sheets_importhtml_refresh.pdf
    • https://cdn.shopify.com/s/files/1/0447/3811/7781/files/guia_roji_carreteras_de_mexico.pdf
    • https://cdn.shopify.com/s/files/1/0431/8360/3873/files/pasotizajogajuk.pdf
    • https://cdn.shopify.com/s/files/1/0428/4959/9644/files/57494122703.pdf
    • https://cdn.shopify.com/s/files/1/0438/1474/8322/files/scott_city_topix.pdf
    • https://cdn.shopify.com/s/files/1/0430/5921/6537/files/95068932726.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_off00004316.bin
1f6823c5797ac836d54e63d56696d73d9997911bbf8eb8d938a947d43d635929		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4316 5448 bytes
font_01_sfnt_off0000559d.bin
a04c472be213a3c8df1e50dd517dbcc8e4b38214bc25c7d02eae520581b864db		 pdf-font-stream PDF embedded font (sfnt) at offset 0x559D 9568 bytes

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