Malicious PDF — malware analysis report

Static analysis result for SHA-256 d8f8534f005f8ee2…

MALICIOUS

PDF

44.5 KB Created: 2020-08-13 15:33:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7acf82cbaf3b38d2054f0beac3f3c216 SHA-1: ea8fe95a11fd9227841cf0bdeba6d94e0412c814 SHA-256: d8f8534f005f8ee226212f304c11bb5aac705dcd8470c421a8ee97d9cf1dcb8b
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, which is characteristic of a link farm designed for SEO manipulation or to obscure malicious redirects. One critical heuristic identified a link to a known malicious redirector infrastructure at 'https://ttraff.ru/pify?keyword=disputationes+camaldulenses+pdf'. This suggests the document's primary purpose is to redirect users to malicious sites.

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=disputationes+camaldulenses+pdf
    • http://files.fernandojimenezphoto.com/uploads/1/3/1/3/131382217/3010862.pdf
    • http://files.stacksapparel.com/uploads/1/3/0/7/130738806/d66e6.pdf
    • http://files.mkcheers.com/uploads/1/3/2/7/132741352/megekame-wepobasadagelul.pdf
    • https://cdn.shopify.com/s/files/1/0429/7926/2615/files/dynex_tv_codes.pdf
    • https://cdn.shopify.com/s/files/1/0427/9658/1020/files/gilezub.pdf
    • https://cdn.shopify.com/s/files/1/0429/8578/3455/files/ponipogikapobilok.pdf
    • https://cdn.shopify.com/s/files/1/0433/3201/0152/files/ejercicios_de_rima_asonante_y_consonante.pdf
    • https://cdn.shopify.com/s/files/1/0431/4746/0768/files/pifezalofenidusasepadi.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/42539854631.pdf
    • https://cdn.shopify.com/s/files/1/0433/4324/9563/files/jevazesosovakezulewixig.pdf
    • https://cdn.shopify.com/s/files/1/0434/4040/6684/files/netuwopaz.pdf
    • https://cdn.shopify.com/s/files/1/0430/3051/1779/files/fotamuw.pdf
    • https://cdn.shopify.com/s/files/1/0455/3906/6021/files/memonotugaritipozifa.pdf
    • https://cdn.shopify.com/s/files/1/0427/9359/9132/files/rapukexuroxiwixowadajinok.pdf
    • https://cdn.shopify.com/s/files/1/0430/5308/8919/files/pdf_catecismo_romano.pdf
    • https://cdn.shopify.com/s/files/1/0440/4684/4054/files/wujesuz.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_off00006bfd.bin
9784142b14fe74dbc551ddcec9ceaef617c49f579f50c3939e5115ab82f470b9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6BFD 5204 bytes
font_01_sfnt_off00007da2.bin
5b3d5b1e1f0f5fb90cdb566f084d9e112afd7f31af58584af394f40c6ca1115c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7DA2 12164 bytes

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