Malicious PDF — malware analysis report

Static analysis result for SHA-256 feee9b0eea2576a9…

MALICIOUS

PDF

42.7 KB Created: 2020-08-01 12:54:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7256e7c4e309a7083c71b41bcea65687 SHA-1: b0e60607b076fc5fbc986c49a794632ee496deb6 SHA-256: feee9b0eea2576a965d29befe64396850ebdc373d53edca1966f0c5fdb009a76
120 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, ttraff.ru, disguised as a support form. It also exhibits characteristics of a link farm, with numerous embedded links to external PDFs, many hosted on Shopify. The primary malicious URL is https://ttraff.ru/pify?keyword=ncoer+support+form, which likely leads to a phishing or malware download page. The document body contains obfuscated text and references to the malicious URL.

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=ncoer+support+form
    • http://files.homeschoolamericanhistory.com/uploads/1/3/1/3/131378899/vozigimenirofat_lukexowate_fomuwimemi.pdf
    • http://files.sidleystandup.com/uploads/1/3/0/7/130775942/3089407.pdf
    • http://files.jimstamperjewelry.com/uploads/1/3/2/7/132740978/fanemila_busab_nabudurapuj_joxatuxolajafij.pdf
    • http://files.outlandagirl.com/uploads/1/3/0/9/130969652/3757367.pdf
    • https://cdn.shopify.com/s/files/1/0435/4169/2570/files/6733731111.pdf
    • https://cdn.shopify.com/s/files/1/0427/9340/2524/files/ti_rubberband_man.pdf
    • https://cdn.shopify.com/s/files/1/0436/9963/4328/files/vusemu.pdf
    • https://cdn.shopify.com/s/files/1/0437/6782/4533/files/17940478890.pdf
    • https://cdn.shopify.com/s/files/1/0432/0601/7186/files/buxiduremudigegimuxat.pdf
    • https://cdn.shopify.com/s/files/1/0430/7674/7413/files/91963576564.pdf
    • https://cdn.shopify.com/s/files/1/0432/1142/3902/files/vatawezasuzupazugurasoze.pdf
    • https://cdn.shopify.com/s/files/1/0431/0728/7189/files/nadojereluneru.pdf
    • https://cdn.shopify.com/s/files/1/0430/2965/9805/files/35952879806.pdf
    • https://cdn.shopify.com/s/files/1/0431/7836/0987/files/gogexovasijemenezar.pdf
    • https://cdn.shopify.com/s/files/1/0428/9311/5558/files/supejosumeriketipu.pdf
    • https://cdn.shopify.com/s/files/1/0435/6079/6318/files/renudazezefa.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_off00006a83.bin
219941175bd7ef021305943bbf0d57dfa674803da3078b1681caade2ff40767f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6A83 4888 bytes
font_01_sfnt_off00007b1f.bin
4b6e65a874bfae466044d5dd7cfe888674682a6369bda661e4a5f02af5e91015		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7B1F 10292 bytes

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