Malicious PDF — malware analysis report

Static analysis result for SHA-256 f7fcf3d91e2d6bfd…

MALICIOUS

PDF

42.6 KB Created: 2020-08-19 05:04:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 89b00019e7028bbdbc3801338e1e2ff6 SHA-1: 2209798bc67c8c8e8447e82b2839512e751412f2 SHA-256: f7fcf3d91e2d6bfde3da1a853d22d156ae00fe0477768673a6d0b52c0fae0106
128 Risk Score

Malware Insights

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

The PDF file contains embedded links that lead to a redirector URL, which is a common technique for distributing malware or phishing pages. The heuristic 'PDF_MALICIOUS_REDIRECTOR_LINK' and 'PDF_SEO_LINK_FARM' indicate that the document is designed to host numerous external links, likely for SEO manipulation or to distribute malicious content. The 'SE_INVOICE_LURE' heuristic suggests the document's content is intended to trick the user into taking an action, such as clicking a link. The primary malicious URL identified is https://ttraff.ru/pify?keyword=excel+template+construction+budget.

Heuristics 4

  • 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.
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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=excel+template+construction+budget
    • http://kojinor.antonianhonors.com/uploads/1/3/1/3/131383434/490941.pdf
    • http://files.janavalloneboudoir.com/uploads/1/3/2/8/132814742/tilomi-pipiperalokafus.pdf
    • http://wosuxer.harboranimalhospital.org/uploads/1/3/2/3/132303035/7020703.pdf
    • http://files.alsupmusic.com/uploads/1/3/2/7/132740339/336999.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/jokesinoximirupabujikupoj.pdf
    • https://cdn.shopify.com/s/files/1/0434/9244/2277/files/38781353795.pdf
    • https://cdn.shopify.com/s/files/1/0434/0446/0188/files/xuwujetugoz.pdf
    • https://cdn.shopify.com/s/files/1/0428/5900/4070/files/develanekopiwosobupo.pdf
    • https://cdn.shopify.com/s/files/1/0433/7631/2478/files/gixofeku.pdf
    • https://cdn.shopify.com/s/files/1/0430/4447/0933/files/45070298781.pdf
    • https://cdn.shopify.com/s/files/1/0435/0833/4744/files/xibusovedapemobuse.pdf
    • https://cdn.shopify.com/s/files/1/0428/0900/0103/files/vofisavanonitovolisazojaf.pdf
    • https://cdn.shopify.com/s/files/1/0438/3218/0893/files/57525309338.pdf
    • https://cdn.shopify.com/s/files/1/0431/8930/5506/files/19767600150.pdf
    • https://cdn.shopify.com/s/files/1/0433/4541/2261/files/free_download_converter_to_word_nitro.pdf
    • https://cdn.shopify.com/s/files/1/0437/5992/7448/files/98346934646.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_off000067f1.bin
7a3e5c669eb6a1ab2206ae53615e734ab52aa6a22f416e45e1a5f115be11abc9
pdf-font-stream PDF embedded font (sfnt) at offset 0x67F1 5556 bytes
font_01_sfnt_off00007ab3.bin
611abf73b372adc11fa3c5e8bcb84e08b19ce9553623716840a0beb85a663879
pdf-font-stream PDF embedded font (sfnt) at offset 0x7AB3 10236 bytes