Malicious PDF — malware analysis report

Static analysis result for SHA-256 c7b95c5dd374580f…

MALICIOUS

PDF

45.8 KB Created: 2020-08-25 13:18:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7593d1f53abdb2ce820a79b59a40df0b SHA-1: 48c8ff828e28ede8c803b864d9f747bf4f75c31b SHA-256: c7b95c5dd374580f578228f622b6642ca5dd8cf8a41b537a30ad05ef5168312f
120 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, with a critical heuristic firing indicating a link to a known malicious redirector. The document body, though heavily obfuscated, also contains the URL 'https://ttraff.com/pify?keyword=distrofia+ungueale+canaliforme', suggesting a lure to a malicious site. The presence of numerous links, many hosted on Shopify, points towards a link farm or a method to obscure the final malicious destination.

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/pify?keyword=distrofia+ungueale+canaliforme
    • http://files.mingateachers.com/uploads/1/3/0/8/130813998/2925129.pdf
    • http://files.drydesign.co.uk/uploads/1/3/1/8/131871433/5679692.pdf
    • http://files.northeastohiodukes.net/uploads/1/3/1/0/131070313/d6930e946a9d3e.pdf
    • http://files.cogbooks.net/uploads/1/3/2/6/132680796/tonusijejoz.pdf
    • https://cdn.shopify.com/s/files/1/0432/7650/1158/files/jemipunuzu.pdf
    • https://cdn.shopify.com/s/files/1/0431/8674/9604/files/complete_scoundrel_3._5.pdf
    • https://cdn.shopify.com/s/files/1/0441/4029/8392/files/calculus_made_easy_1998.pdf
    • https://cdn.shopify.com/s/files/1/0433/6992/2714/files/aramark_uniforms_jobs.pdf
    • https://cdn.shopify.com/s/files/1/0431/7688/6431/files/nixeferuxosonupof.pdf
    • https://cdn.shopify.com/s/files/1/0445/3256/4132/files/agathias_histories.pdf
    • https://cdn.shopify.com/s/files/1/0431/4460/9943/files/xezod.pdf
    • https://cdn.shopify.com/s/files/1/0433/9141/8518/files/medetadokabuso.pdf
    • https://cdn.shopify.com/s/files/1/0434/3929/2582/files/54228756055.pdf
    • https://cdn.shopify.com/s/files/1/0430/8349/7623/files/wupurodudawakowozowe.pdf
    • https://cdn.shopify.com/s/files/1/0434/8795/3053/files/42719954011.pdf
    • https://cdn.shopify.com/s/files/1/0428/2518/7491/files/bakuxomidurixagepeb.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_off0000759b.bin
f7de1858b7d4d42e9adf9c4add56a2cf6b9e306aff39aa287c802f69eb1081c5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x759B 5200 bytes
font_01_sfnt_off00008734.bin
7efcd26106bb07dd4af62f1e52d21dad134f0027dfc8d29efb16d38d02e65ce8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8734 10384 bytes

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