Malicious PDF — malware analysis report

Static analysis result for SHA-256 940bf1b0baa8eeab…

MALICIOUS

PDF

47.7 KB Created: 2020-08-09 14:40:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6623754a23fd71f9657051b015093864 SHA-1: 31ee290e7f5fd043a2291ff53b105babf72d54e1 SHA-256: 940bf1b0baa8eeab0e843c70ff5173a29b205a8155c32a37d876ddc75973a5a7
120 Risk Score

Malware Insights

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

The PDF contains a mass of external links, many pointing to Shopify domains, but one critical link redirects to a known malicious domain, ttraff.com. This indicates a link farm or SEO poisoning tactic designed to lure users into clicking malicious URLs. The document body itself is heavily obfuscated and contains the malicious URL, suggesting it's part of the lure.

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=cutting+tool+materials+properties+pdf
    • http://files.logcabinforrent.ca/uploads/1/3/1/4/131482954/9696827.pdf
    • http://xewem.neuropsychologystl.com/uploads/1/3/1/8/131856772/romabijulexep.pdf
    • http://files.lillyannetr.com/uploads/1/3/1/1/131164113/zadibuxugekoz.pdf
    • http://files.gettruckedoz.com.au/uploads/1/3/0/7/130740090/951c62.pdf
    • http://files.heatherspencerstudio.com/uploads/1/3/0/7/130740212/fogokatijeturig_kilawon_nuvosufu.pdf
    • https://cdn.shopify.com/s/files/1/0430/8028/6372/files/lofuruvon.pdf
    • https://cdn.shopify.com/s/files/1/0431/5355/5624/files/5954729819.pdf
    • https://cdn.shopify.com/s/files/1/0439/2920/6952/files/lutheran_study_bible_download.pdf
    • https://cdn.shopify.com/s/files/1/0430/1481/5901/files/82505685994.pdf
    • https://cdn.shopify.com/s/files/1/0432/4166/8770/files/wezobiwigusekikeparewol.pdf
    • https://cdn.shopify.com/s/files/1/0434/1733/8005/files/andhra_bank_credit_card_statement_password.pdf
    • https://cdn.shopify.com/s/files/1/0430/5387/5357/files/watutomotunopizudopisido.pdf
    • https://cdn.shopify.com/s/files/1/0432/9753/8203/files/68675702499.pdf
    • https://cdn.shopify.com/s/files/1/0433/7840/9639/files/difinetegirada.pdf
    • https://cdn.shopify.com/s/files/1/0434/4227/4471/files/agamben_the_time_that_remains.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/pegegezanonipilupe.pdf
    • https://cdn.shopify.com/s/files/1/0432/6470/4662/files/94999282565.pdf
    • https://cdn.shopify.com/s/files/1/0431/0306/0128/files/37646003471.pdf
    • https://cdn.shopify.com/s/files/1/0431/8022/8757/files/fill_in_the_blanks_with_articles_worksheets.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_off00007d4b.bin
a9e519f27ac86f7e190c638d9855b50f69bf7d01960f4037ee2fe969943236d7
pdf-font-stream PDF embedded font (sfnt) at offset 0x7D4B 5268 bytes
font_01_sfnt_off00008f1b.bin
4b999d17ae78ccc7c1e7ee69717ea4f4feac4b858e3ed730364db1c95d3e371c
pdf-font-stream PDF embedded font (sfnt) at offset 0x8F1B 10020 bytes