Malicious PDF — malware analysis report

Static analysis result for SHA-256 ea433bd78518345b…

MALICIOUS

PDF

43.0 KB Created: 2020-08-23 07:01:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c459a3838e4da9ee1328209651587064 SHA-1: 1632f028e8631cd8d3e119b77608c866b3bc3881 SHA-256: ea433bd78518345bbb8fa75a1a03ff7417d52c149279c002dccf73be2f976cc8
150 Risk Score

Malware Insights

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

The PDF file exhibits characteristics of a malicious redirector and link farm, with numerous embedded URLs. One prominent URL, 'https://ttraff.com/pify?keyword=cantos+del+camino+neocatecumenal+2017+pdf', is flagged as a malicious redirector. The presence of a large number of external links, many pointing to Shopify domains, suggests an attempt to obscure the final malicious destination or to leverage SEO techniques for distribution. The ML classifier also strongly indicated maliciousness.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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=cantos+del+camino+neocatecumenal+2017+pdf
    • http://files.floralstrategies.com/uploads/1/3/0/9/130968943/fuvatagukev.pdf
    • https://cdn.shopify.com/s/files/1/0434/0432/9127/files/activity_series_of_metals_chart.pdf
    • https://cdn.shopify.com/s/files/1/0430/7868/0730/files/17783359627.pdf
    • https://cdn.shopify.com/s/files/1/0428/4448/7836/files/the_analysis_and_use_of_financial_statements_solutions_manual.pdf
    • https://cdn.shopify.com/s/files/1/0431/6676/1120/files/algebraic_expressions_examples.pdf
    • https://cdn.shopify.com/s/files/1/0435/2252/3288/files/9974448548.pdf
    • https://cdn.shopify.com/s/files/1/0429/8512/8099/files/sunorobizurasotozegikisa.pdf
    • https://cdn.shopify.com/s/files/1/0428/8783/9910/files/48596464922.pdf
    • https://cdn.shopify.com/s/files/1/0431/6325/4944/files/98735164152.pdf
    • https://cdn.shopify.com/s/files/1/0430/0367/4785/files/26187646593.pdf
    • https://cdn.shopify.com/s/files/1/0432/5317/0339/files/gufasorikuwuridojitizuwaz.pdf
    • https://cdn.shopify.com/s/files/1/0430/5797/1362/files/zepexadi.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_off000066b2.bin
64f91aa2b6e6ffdc2c5b6a4d1620226b3d8f03aae45fc3b116358110b0af08b6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x66B2 5516 bytes
font_01_sfnt_off00007972.bin
0544d37e031bf966acf7f50c653dcaff07928154f1c754a192d5bf60dc7410d0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7972 11152 bytes

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