Malicious PDF — malware analysis report

Static analysis result for SHA-256 b06d26be81aaa981…

MALICIOUS

PDF

34.2 KB Created: 2020-08-10 14:23:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ae0997e2d2b8057c777b3cf07eaa1791 SHA-1: 5ed63521311932049af09044f99dfc9b489e224f SHA-256: b06d26be81aaa9814dac6f0122a351cf5214b6adcd398a65e53dfcda0d30b2f3
150 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to external resources hosted on platforms like Shopify. One of the primary links, 'https://ttraff.cc/pify?keyword=caldeira+industrial+pdf', is identified as a malicious redirector. This suggests the document's purpose is to lure users into clicking these links, potentially leading them to malicious websites or further stages of an attack. 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.cc/pify?keyword=caldeira+industrial+pdf
    • http://files.vintagewoodworkingtools.net/uploads/1/3/0/7/130740625/siwisap-sawew-vepuro.pdf
    • http://files.manifoldwisdom.org/uploads/1/3/0/7/130775952/3842709.pdf
    • http://files.stacylhenstridge.com/uploads/1/3/0/7/130775498/07c0d6029568.pdf
    • http://jedil.westgatechildcenter.com/uploads/1/3/2/3/132302978/1538562.pdf
    • http://files.xyzns.org/uploads/1/3/1/4/131437859/5432665.pdf
    • https://cdn.shopify.com/s/files/1/0439/6387/5486/files/zibexusozojagarixe.pdf
    • https://cdn.shopify.com/s/files/1/0437/6566/1845/files/the_five_star_church.pdf
    • https://cdn.shopify.com/s/files/1/0432/1837/0728/files/algorithme_tableau_exercice_corrig.pdf
    • https://cdn.shopify.com/s/files/1/0436/2086/0064/files/las_energias_renovables.pdf
    • https://cdn.shopify.com/s/files/1/0432/2990/5058/files/capites_de_areia_livro_em.pdf
    • https://cdn.shopify.com/s/files/1/0432/6309/9040/files/2246414627.pdf
    • https://cdn.shopify.com/s/files/1/0434/7881/0789/files/kadalifepuj.pdf
    • https://cdn.shopify.com/s/files/1/0430/9562/1796/files/tejibamu.pdf
    • https://cdn.shopify.com/s/files/1/0428/1804/4070/files/89635135014.pdf
    • https://cdn.shopify.com/s/files/1/0437/1510/0840/files/rental_agreement_form_fillable.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/xumilegimazuguvabunozanik.pdf
    • https://cdn.shopify.com/s/files/1/0433/6458/1525/files/catalogo_price_shoes_urbano_2020.pdf
    • https://cdn.shopify.com/s/files/1/0430/6980/0597/files/82252016388.pdf
    • https://cdn.shopify.com/s/files/1/0432/8233/3856/files/wamupu.pdf
    • https://cdn.shopify.com/s/files/1/0429/3178/1791/files/bavibutirugijipafiju.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_off000047ee.bin
563b51845aa4f63fc688c2b7113132162dfbfceb8812737d4d062eaef3877bc9
pdf-font-stream PDF embedded font (sfnt) at offset 0x47EE 4940 bytes
font_01_sfnt_off000058c0.bin
c3c2b6ccb0e4fdc84300ef57fb076177681c77e2f0db25eb085b79404f9d0b9c
pdf-font-stream PDF embedded font (sfnt) at offset 0x58C0 10644 bytes