Malicious PDF — malware analysis report

Static analysis result for SHA-256 b35f537eaf77ed24…

MALICIOUS

PDF

38.8 KB Created: 2020-08-18 21:59:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 535b819839c339b2ed68a4245ac3c141 SHA-1: 5fa08f04b775d4b1e77d78058354918d6dd3998b SHA-256: b35f537eaf77ed246827a8413bd4b4e5534fcc7ade24683307107020b54142c7
120 Risk Score

Malware Insights

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

The PDF contains a link that redirects to a known malicious URL, disguised with keywords related to an NFL injury report. The document also functions as a link farm, pointing to numerous other PDFs hosted on Shopify. The primary malicious link is https://ttraff.ru/pify?keyword=injury+report+nfl+week+1+2018, which is a critical finding indicating redirection to malicious infrastructure. The presence of multiple external links suggests a potential attempt to distribute further malicious content or engage in SEO manipulation for malicious purposes.

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=injury+report+nfl+week+1+2018
    • http://files.redlinefishing.nz/uploads/1/3/1/4/131482953/lanoxo_mesaxogapo.pdf
    • http://files.stmartinoftoursomaha.com/uploads/1/3/1/4/131406403/ludinusifebafim-xofisetas-sudido-logekaz.pdf
    • https://cdn.shopify.com/s/files/1/0432/0939/2285/files/tewedupisuto.pdf
    • https://cdn.shopify.com/s/files/1/0434/5158/0568/files/mikilopuwagibejofoteka.pdf
    • https://cdn.shopify.com/s/files/1/0432/4143/9400/files/gre_probability_questions.pdf
    • https://cdn.shopify.com/s/files/1/0427/4988/6620/files/mewaburide.pdf
    • https://cdn.shopify.com/s/files/1/0431/3759/7591/files/manajemen_sumber_daya_manusia_simamora.pdf
    • https://cdn.shopify.com/s/files/1/0435/6361/4369/files/5059499969.pdf
    • https://cdn.shopify.com/s/files/1/0428/5497/3606/files/after_effects_title_animation_templates.pdf
    • https://cdn.shopify.com/s/files/1/0431/3609/0267/files/paletipir.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_off00005954.bin
c89ca8e407c5611526f9db9bbbddc3817b1d20b6519d0ab62ef48c7b50a1707c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5954 5300 bytes
font_01_sfnt_off00006b98.bin
be4109c837c540e15e877404c8741491706fb1daa0b08c88b6a8375210d48b55		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6B98 10252 bytes

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