Malicious PDF — malware analysis report

Static analysis result for SHA-256 2458f4e4f95072c3…

MALICIOUS

PDF

45.7 KB Created: 2020-08-04 13:57:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5f3f9a2c7e4187861d8b2893925d482f SHA-1: 67be9efa610c827e132b1bab78e3b6a9108a7ea4 SHA-256: 2458f4e4f95072c3ffcc29efc5fcab9bb3158ac97ef5d432117e9edca36d555b
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to external PDF files hosted on Shopify. The primary malicious link, https://ttraff.ru/pify?keyword=tratamiento+nutricional+para+esclerosis+multiple+pdf, is identified as a malicious redirector. This suggests the document is designed to lure users to malicious infrastructure, likely for further exploitation or phishing. 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.ru/pify?keyword=tratamiento+nutricional+para+esclerosis+multiple+pdf
    • http://files.stevecanderson.com/uploads/1/3/1/3/131379183/tusemi.pdf
    • http://files.artsypartync.com/uploads/1/3/1/3/131380583/59913.pdf
    • http://files.acadiavacationsmaine.com/uploads/1/3/1/4/131406413/bewukexof.pdf
    • http://files.chrysalisearthfarm.org/uploads/1/3/1/6/131636655/pudalimojixuw_vebazaluvowudu_mekug.pdf
    • https://cdn.shopify.com/s/files/1/0431/1482/3834/files/71098080269.pdf
    • https://cdn.shopify.com/s/files/1/0430/1009/7313/files/77260086306.pdf
    • https://cdn.shopify.com/s/files/1/0430/9018/2304/files/49573300155.pdf
    • https://cdn.shopify.com/s/files/1/0428/4314/4355/files/20361853039.pdf
    • https://cdn.shopify.com/s/files/1/0432/3137/9618/files/madefe.pdf
    • https://cdn.shopify.com/s/files/1/0434/6360/6429/files/30059422158.pdf
    • https://cdn.shopify.com/s/files/1/0430/8792/1313/files/58946384977.pdf
    • https://cdn.shopify.com/s/files/1/0432/9970/0889/files/33344362890.pdf
    • https://cdn.shopify.com/s/files/1/0432/9707/9460/files/24929638691.pdf
    • https://cdn.shopify.com/s/files/1/0427/7128/4135/files/seniveralexopokurok.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006a8d.bin
cfdf59a0cc40cda50b922138463ecaa12fc447e9f282d0131606ef10d6057929		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6A8D 2868 bytes
font_01_sfnt_off000074c0.bin
04b1d669871785e0e0c00a5dc75208d844cc9642788ea81f53781904c57ba150		 pdf-font-stream PDF embedded font (sfnt) at offset 0x74C0 5248 bytes
font_02_sfnt_off0000867e.bin
61953a5e8aaf4c46b5e72426f44d6cad9639925a4ef7935591c41ae25b0546e6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x867E 10048 bytes

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