Malicious PDF — malware analysis report

Static analysis result for SHA-256 da8590a40af9437a…

MALICIOUS

PDF

46.7 KB Created: 2020-08-25 03:46:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 92bf1852e518ab772ad4471928aafd4c SHA-1: 1c9e9199c67bd7ac16089ca1f4f8ff4e2688004c SHA-256: da8590a40af9437a27986c3bfd77e19c4c7cce626b0412ecad128e667c2fd3ad
120 Risk Score

Malware Insights

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

The PDF file contains a link to a known malicious redirector, ttraff.ru, which is disguised as information about bed sheets. The file also contains a large number of links to Shopify-hosted PDFs, likely as part of an SEO farm to obscure the malicious redirector. The presence of these elements strongly suggests a phishing or scam attempt.

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=standard+queen+bed+sheet+size
    • http://files.spiritandsageshop.com/uploads/1/3/2/6/132682113/5322322.pdf
    • http://files.sunrivertransparency.org/uploads/1/3/1/3/131398091/2413687.pdf
    • http://zexor.wunderkindlanguage.com/uploads/1/3/2/3/132303382/faruje_mesoberutozak_tabivazelena_pemudepuk.pdf
    • http://files.pastorbobnlnh.com/uploads/1/3/2/7/132710491/rizobanuku.pdf
    • http://files.quantumology.net/uploads/1/3/0/9/130969051/buzovu.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/bujebunefevefosilipepeju.pdf
    • https://cdn.shopify.com/s/files/1/0434/9083/6645/files/55478822535.pdf
    • https://cdn.shopify.com/s/files/1/0430/2834/9079/files/fetigavu.pdf
    • https://cdn.shopify.com/s/files/1/0434/8762/5369/files/free_autocad_blocks_office_furniture.pdf
    • https://cdn.shopify.com/s/files/1/0431/4424/9499/files/36711204001.pdf
    • https://cdn.shopify.com/s/files/1/0435/2871/6439/files/7899629092.pdf
    • https://cdn.shopify.com/s/files/1/0439/0669/5320/files/zevozopexudutijegi.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/pekazojifedabefotekufof.pdf
    • https://cdn.shopify.com/s/files/1/0439/2851/8824/files/weretulevuxufetutanotudat.pdf
    • https://cdn.shopify.com/s/files/1/0431/2439/2087/files/calendario_f1_2020_orari.pdf
    • https://cdn.shopify.com/s/files/1/0438/0105/1293/files/64288027881.pdf
    • https://cdn.shopify.com/s/files/1/0437/9148/3032/files/67306847126.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_off000078ee.bin
3c55508d1db3b6e4c073211371678fa2ffa7028cc32cf82c06543f8888c26cc4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x78EE 5300 bytes
font_01_sfnt_off00008ae0.bin
d238a197e9f9d06412fa1238e36f236a17998047a31deaed05de0459be754aa6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8AE0 10140 bytes

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