Malicious PDF — malware analysis report

Static analysis result for SHA-256 3ad4e64a1545ffd9…

MALICIOUS

PDF

34.4 KB Created: 2020-08-13 23:21:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5c1306983720a799b0e7ceca34496134 SHA-1: a312790442d116813540a17b1b688df84edd1917 SHA-256: 3ad4e64a1545ffd9e3e42b88cc23c90dea6db50667691c655745479c4830b999
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.001 Malicious Link

The PDF contains a heuristic firing for a malicious redirector link, pointing to ttraff.cc. The document body also contains this URL and a large number of other embedded links, many of which are to Shopify-hosted PDFs, suggesting a link farm or SEO poisoning attempt. The primary malicious URL is likely intended to lead the user to a further malicious resource.

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.cc/wb?keyword=principles%20of%20extractive%20metallurgy%20rosenqvist%20pdf
    • http://gonode.learntosailswf.org/uploads/1/3/1/4/131408027/1287742.pdf
    • http://bokixuk.purduecm.org/uploads/1/3/1/6/131636719/tuvesatijawewow-ruzamige-gobezibizino.pdf
    • http://sanobez.dblakephotography.co.uk/uploads/1/3/1/4/131407406/tedar_tutugulo.pdf
    • http://files.erlendstaub.com/uploads/1/3/1/3/131383747/8122819.pdf
    • https://cdn.shopify.com/s/files/1/0431/7547/7416/files/zojexojak.pdf
    • https://cdn.shopify.com/s/files/1/0433/0615/6190/files/ariella_azoulay_the_civil_contract_of_photography.pdf
    • https://cdn.shopify.com/s/files/1/0434/4928/6817/files/avenue_q_soundtrack.pdf
    • https://cdn.shopify.com/s/files/1/0433/2965/0843/files/32983349803.pdf
    • https://cdn.shopify.com/s/files/1/0436/9108/1882/files/84795274224.pdf
    • https://cdn.shopify.com/s/files/1/0431/0581/2633/files/90072379809.pdf
    • https://cdn.shopify.com/s/files/1/0431/8570/1025/files/53149448395.pdf
    • https://cdn.shopify.com/s/files/1/0427/4287/4278/files/zibukesumimijupizisomo.pdf
    • https://cdn.shopify.com/s/files/1/0435/3517/1736/files/peluvijogor.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/fonufefijosogigu.pdf
    • https://cdn.shopify.com/s/files/1/0434/5249/8070/files/fairy_tales_in_malayalam.pdf
    • https://cdn.shopify.com/s/files/1/0431/5162/2305/files/nelemonenipe.pdf
    • https://cdn.shopify.com/s/files/1/0431/7220/0608/files/20811995519.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_off00004862.bin
98d08cbd51fd2540d0922c7c1c54f00afdf51025f220705073d3463032f410d2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4862 5832 bytes
font_01_sfnt_off00005c22.bin
985d3bba59f3006c47616fc7a486329e1ee01bed3aae9d2457e1c89ce67cf26a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5C22 9504 bytes

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