Malicious PDF — malware analysis report

Static analysis result for SHA-256 ef9b7f65466352ec…

MALICIOUS

PDF

54.2 KB Created: 2020-08-15 03:54:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5137948b76ce60f0aceca22f86fe8541 SHA-1: 1ccf6bd355ee1ae758f4fd5ca3321d041f5e39f6 SHA-256: ef9b7f65466352ec5bbf38d78bffbf36c8b80ab495a89ddfe0d5909c4c329986
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 Shopify domains, but one critical link redirects to a known malicious domain (ttraff.ru). This suggests a link farm or SEO manipulation tactic to distribute malicious content. The document body, though heavily obfuscated, contains the malicious URL, indicating an attempt to redirect the user. No scripts were extracted, limiting the analysis of further payload delivery or 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.ru/pify?keyword=guided+focused+ultrasound+ablation
    • http://files.permajackofmidmo.com/uploads/1/3/1/3/131384492/famifagozox.pdf
    • http://fumibu.prayerballoons.org/uploads/1/3/1/3/131398489/gavedugewapu.pdf
    • https://cdn.shopify.com/s/files/1/0435/2681/5903/files/72536839065.pdf
    • https://cdn.shopify.com/s/files/1/0440/2518/4421/files/fewogirosisuv.pdf
    • https://cdn.shopify.com/s/files/1/0432/1030/9787/files/88868631233.pdf
    • https://cdn.shopify.com/s/files/1/0435/1790/3003/files/kajalumunogipoxidotujot.pdf
    • https://cdn.shopify.com/s/files/1/0432/1063/7476/files/creative_resume_photoshop_template.pdf
    • https://cdn.shopify.com/s/files/1/0430/9408/1687/files/12800126196.pdf
    • https://cdn.shopify.com/s/files/1/0431/3815/4653/files/wusux.pdf
    • https://cdn.shopify.com/s/files/1/0431/3032/3095/files/8426825926.pdf
    • https://cdn.shopify.com/s/files/1/0431/9772/6880/files/amuleto_bolao.pdf
    • https://cdn.shopify.com/s/files/1/0431/4837/8266/files/33016587508.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_off000095f4.bin
6b2a575913d4fe771fa48c63abf04dd6c4adaedf07493d41ca2ea9e2f832d125		 pdf-font-stream PDF embedded font (sfnt) at offset 0x95F4 5188 bytes
font_01_sfnt_off0000a7a1.bin
80269ada01b22ae91874f5bc1b84913be656658f0681549587874bc84700bccc		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA7A1 10504 bytes

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