Malicious PDF — malware analysis report

Static analysis result for SHA-256 3bd97ec3bc5903da…

MALICIOUS

PDF

70.6 KB Created: 2020-08-18 19:44:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 591a6d83313cb06fc19b340be39dbf11 SHA-1: a92959aa588aaeaa20075283bc45ddd565759b45 SHA-256: 3bd97ec3bc5903dae746c1d806a5aca76aa805f8c754945404a6ff7dff9c3e64
120 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, which is also present in the document body. This link, 'https://ttraff.ru/pify?keyword=asus+sonicmaster+driver+windows+8.+1', is designed to lure users by promising a driver download. The PDF also exhibits characteristics of a link farm, with numerous embedded URLs pointing to Shopify, likely for SEO manipulation to increase visibility of malicious content.

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=asus+sonicmaster+driver+windows+8.+1
    • http://ruwosawug.lutesfamilyart.com/uploads/1/3/1/3/131383483/perovevuxunije-bofupakomiw-buvobeposodene-torupubenan.pdf
    • http://files.coalitionpoliticsandeconomicdevelopment.com/uploads/1/3/2/6/132681690/xijupiguve.pdf
    • http://files.happyteachers.co.uk/uploads/1/3/1/4/131482915/segetemir.pdf
    • https://cdn.shopify.com/s/files/1/0433/7175/7718/files/rutidekige.pdf
    • https://cdn.shopify.com/s/files/1/0435/5158/8507/files/bazamexisowusipabidi.pdf
    • https://cdn.shopify.com/s/files/1/0433/4475/6901/files/77160595872.pdf
    • https://cdn.shopify.com/s/files/1/0437/0215/7466/files/pinidojesakemovobug.pdf
    • https://cdn.shopify.com/s/files/1/0447/5827/0101/files/brand_positioning_workshop.pdf
    • https://cdn.shopify.com/s/files/1/0434/9722/6402/files/41600012095.pdf
    • https://cdn.shopify.com/s/files/1/0429/7120/1695/files/vetitenotezuroti.pdf
    • https://cdn.shopify.com/s/files/1/0439/1138/1147/files/export_bookmarks_from_chrome.pdf
    • https://cdn.shopify.com/s/files/1/0436/2724/9826/files/67919826422.pdf
    • https://cdn.shopify.com/s/files/1/0435/2029/5064/files/nijegujog.pdf
    • https://cdn.shopify.com/s/files/1/0429/2627/6774/files/3371390147.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_off0000d4f4.bin
c342ecdecff528e84eb74bead9bdac7709f243cee01174d6128963862bee04eb		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD4F4 5472 bytes
font_01_sfnt_off0000e78c.bin
dfc8eaef619b9c374e1e5ae454e2f1f9b3b9b478b27c0397aee6b19d3d2d330e		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE78C 10564 bytes

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