Malicious PDF — malware analysis report

Static analysis result for SHA-256 fe086838e49bdf99…

MALICIOUS

PDF

39.9 KB Created: 2020-08-19 23:41:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7e98bae8c85885ba4a72973abbc0161a SHA-1: 76e18debdb07c4df231e507e8a3aaf990313c116 SHA-256: fe086838e49bdf99f583f6e668624af15d3e0e7bdee1f3d6deb102816dddda20
120 Risk Score

Malware Insights

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

The PDF contains a significant number of embedded links, many pointing to a link farm hosted on Shopify, which is a strong indicator of SEO poisoning or phishing attempts. One critical heuristic identified a link to a known malicious redirector at 'https://ttraff.ru/pify?keyword=l%25E1%25BA%25A1c+tr%25C3%25B4i+sheet+nh%25E1%25BA%25A1c'. This suggests the document's primary purpose is to redirect users to malicious sites, likely for further exploitation or credential harvesting.

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=l%25E1%25BA%25A1c+tr%25C3%25B4i+sheet+nh%25E1%25BA%25A1c
    • http://kijajaw.greendoorconsignment.com/uploads/1/3/1/3/131381612/c35ec84641.pdf
    • http://bipije.askeaton.coralleisure.ie/uploads/1/3/2/6/132681464/395a0.pdf
    • https://cdn.shopify.com/s/files/1/0440/5762/4726/files/download_to_excel_converter_software.pdf
    • https://cdn.shopify.com/s/files/1/0435/6639/9647/files/convert_bin_to_iso.pdf
    • https://cdn.shopify.com/s/files/1/0430/5394/0887/files/36521620941.pdf
    • https://cdn.shopify.com/s/files/1/0428/1312/8867/files/pusuresegozubilo.pdf
    • https://cdn.shopify.com/s/files/1/0433/5537/3720/files/8446104366.pdf
    • https://cdn.shopify.com/s/files/1/0427/6197/8023/files/73900897231.pdf
    • https://cdn.shopify.com/s/files/1/0428/3544/3875/files/lagazi.pdf
    • https://cdn.shopify.com/s/files/1/0427/4615/1078/files/lufabezezotatas.pdf
    • https://cdn.shopify.com/s/files/1/0431/1928/0288/files/wuresifivuselobu.pdf
    • https://cdn.shopify.com/s/files/1/0431/4297/1553/files/45189906892.pdf
    • https://cdn.shopify.com/s/files/1/0432/8806/8254/files/dikuloliragapalavonev.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_off000051b8.bin
4457ed6718e2036f435c0df8aca9b19ae1e5e8b71b8d780f7afad918ce1abfa8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x51B8 4956 bytes
font_01_sfnt_off0000624e.bin
1b8f1e2f913ad2d15fe9b5db02cfc928b6fda092a3e695d7aa135b9e49cc91f6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x624E 21568 bytes

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