Malicious PDF — malware analysis report

Static analysis result for SHA-256 544718a5cd35400a…

MALICIOUS

PDF

43.2 KB Created: 2020-08-23 11:43:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8e4b93b7c01f2fb4701d78355120ab6a SHA-1: 06b34a34fbed91aef49262f9660ea407a352761b SHA-256: 544718a5cd35400ae15baeb6d069a470348ce3469dd4c845907b7f504317aa4b
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF document contains a mass of external links, many pointing to Shopify domains, designed to appear as legitimate content. One specific URL, https://ttraff.com/pify?keyword=2+fold+business+brochure+template, is identified as a malicious redirector. The document body, though heavily obfuscated, contains references to the brochure template lure and the malicious URL. The primary attack pattern involves tricking the user into clicking a malicious link within the document, leading to a redirector.

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=2+fold+business+brochure+template
    • http://files.martinprice.ca/uploads/1/3/1/4/131407901/8532277.pdf
    • https://cdn.shopify.com/s/files/1/0434/0062/6325/files/nuwatupovumowogun.pdf
    • https://cdn.shopify.com/s/files/1/0429/5265/5002/files/31251634901.pdf
    • https://cdn.shopify.com/s/files/1/0436/0955/5107/files/76824324032.pdf
    • https://cdn.shopify.com/s/files/1/0433/2349/0457/files/gijewuruwatabefe.pdf
    • https://cdn.shopify.com/s/files/1/0441/3744/7576/files/separate_into_multiples.pdf
    • https://cdn.shopify.com/s/files/1/0428/4828/8935/files/rarokeviwibipofuduk.pdf
    • https://cdn.shopify.com/s/files/1/0427/6443/5612/files/greek_mythology_creation.pdf
    • https://cdn.shopify.com/s/files/1/0435/2249/0528/files/42088293838.pdf
    • https://cdn.shopify.com/s/files/1/0440/5841/1158/files/auto_increment_sql.pdf
    • https://cdn.shopify.com/s/files/1/0434/4525/6352/files/capital_letters_cursive_writing_worksheets.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_off00006b6b.bin
293c3ea99ec2f0868861b4aa7809c5b8b7de0ce8160605fc5f504938796e1f15		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6B6B 5572 bytes
font_01_sfnt_off00007e22.bin
28f278a9f3618bec193b24daea751c32d210cb3908b2d9e3f04f55557201b2c9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7E22 9996 bytes

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