Malicious PDF — malware analysis report

Static analysis result for SHA-256 8d95ba1d1a3748ff…

MALICIOUS

PDF

40.3 KB Created: 2020-08-08 02:47:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 666a02b9e4384018bb98b39445017e40 SHA-1: 2aef61c0929b74a04601d0d5365c3eef2b25f1d1 SHA-256: 8d95ba1d1a3748ffb74eb87e6567488da541eefe6e229f4d5dc527259288da80
120 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link, which points to a URL designed to lure users with a search query for 'Star wars lego instructions pdf'. The document body contains this same lure and a list of numerous external PDF links, many hosted on Shopify, suggesting a link farm or SEO poisoning tactic. The primary malicious URL is https://ttraff.ru/pify?keyword=star+wars+lego+instructions+pdf, which is likely intended to redirect the user to a malicious payload or phishing page.

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=star+wars+lego+instructions+pdf
    • http://files.gettemeiers.com/uploads/1/3/0/7/130738739/2592843.pdf
    • http://files.sannihirvonen.com/uploads/1/3/1/3/131379060/5394388.pdf
    • http://files.northwoodswolfalliance.org/uploads/1/3/1/4/131408581/fojiji.pdf
    • https://cdn.shopify.com/s/files/1/0431/8940/3810/files/wawanizipifevoratar.pdf
    • https://cdn.shopify.com/s/files/1/0434/3224/7457/files/zastone_d9000_manual.pdf
    • https://cdn.shopify.com/s/files/1/0432/5664/3739/files/55713192732.pdf
    • https://cdn.shopify.com/s/files/1/0432/5716/8027/files/60468176890.pdf
    • https://cdn.shopify.com/s/files/1/0429/5042/6787/files/chaim_potok_zebra.pdf
    • https://cdn.shopify.com/s/files/1/0429/5042/6787/files/48438307292.pdf
    • https://cdn.shopify.com/s/files/1/0431/2485/0842/files/camshaft_parts_and_function.pdf
    • https://cdn.shopify.com/s/files/1/0431/1659/3312/files/40338201276.pdf
    • https://cdn.shopify.com/s/files/1/0429/9125/5713/files/1986913362.pdf
    • https://cdn.shopify.com/s/files/1/0433/9888/9635/files/zapelubaju.pdf
    • https://cdn.shopify.com/s/files/1/0432/7656/6684/files/11593428511.pdf
    • https://cdn.shopify.com/s/files/1/0440/3170/5238/files/xikazub.pdf
    • https://cdn.shopify.com/s/files/1/0434/1491/3191/files/autoimmune_hepatitis_score.pdf
    • https://cdn.shopify.com/s/files/1/0432/4291/3952/files/93168797978.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_off00005c69.bin
c56bc300042cf336d8d3d2c57d0c9c48c15395dc57c1a8129fe7455328595283		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5C69 5520 bytes
font_01_sfnt_off00006f51.bin
481d2609e78c412b8f8191ee201f520eb08af0c4a1d9ecc322dd974261784b52		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6F51 10916 bytes

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