Malicious PDF — malware analysis report

Static analysis result for SHA-256 9216fb7c13faa131…

MALICIOUS

PDF

40.9 KB Created: 2020-08-19 06:22:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8f5ca627bc9f7166b9c64325ac8266b4 SHA-1: feeb8da9e6f735c137f8adf75522f13ad71cb37f SHA-256: 9216fb7c13faa131d819f7a14bcb99008d7f943fc8c1a5e5265691c1294d9882
120 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many pointing to Shopify domains, but one critical link directs to a known malicious redirector at 'https://ttraff.ru/pify?keyword=graph+theory+multiple+choice+questions+and+answers'. This suggests the document is part of a link farm or SEO poisoning campaign designed to drive traffic to malicious infrastructure. No scripts were extracted, limiting the analysis of direct payload delivery mechanisms.

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=graph+theory+multiple+choice+questions+and+answers
    • http://files.gilfordgotlunch.com/uploads/1/3/2/6/132681513/0d31e607c67.pdf
    • http://tajedo.heartsofhorsehaven.org/uploads/1/3/2/8/132814838/misir.pdf
    • http://files.orendagametables.org/uploads/1/3/1/3/131383380/lafalofuvixal_nofedikomamorik_kenalisedavur_jagepakikog.pdf
    • http://files.millseatonpublic.com.au/uploads/1/3/1/8/131856146/zobopitolepaladegu.pdf
    • https://cdn.shopify.com/s/files/1/0430/5122/1146/files/riroges.pdf
    • https://cdn.shopify.com/s/files/1/0432/7030/7995/files/gimuboviranotunux.pdf
    • https://cdn.shopify.com/s/files/1/0428/0372/4455/files/fannie_mae_loan_guidelines_for_investment_properties.pdf
    • https://cdn.shopify.com/s/files/1/0438/1586/2434/files/pig_latin_python.pdf
    • https://cdn.shopify.com/s/files/1/0431/6109/2250/files/2020_calendar_monthly_printable.pdf
    • https://cdn.shopify.com/s/files/1/0437/4567/3377/files/john_deere_425_parts_manual.pdf
    • https://cdn.shopify.com/s/files/1/0429/8797/8913/files/86173892511.pdf
    • https://cdn.shopify.com/s/files/1/0437/6713/6413/files/msds_safety_data_sheet.pdf
    • https://cdn.shopify.com/s/files/1/0428/1381/6995/files/17343969291.pdf
    • https://cdn.shopify.com/s/files/1/0448/2056/2077/files/lagun.pdf
    • https://cdn.shopify.com/s/files/1/0440/1269/9798/files/58560710147.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_off00006127.bin
ef09939fc8526c6b01b3a9dad4549af81aa490a38f2f7abaef3f3c415400a683		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6127 5664 bytes
font_01_sfnt_off00007461.bin
ea5beaf8f10c6599abb2d3f941577302ebe55d4dc575a9a8deaf092c399c9dfe		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7461 9964 bytes

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