Malicious PDF — malware analysis report

Static analysis result for SHA-256 1f93d9b261f6de2a…

MALICIOUS

PDF

44.0 KB Created: 2020-08-23 10:26:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: fe6d9079356da056e0d24c8d0bff46cc SHA-1: 9627a9fe86b6e861d28eeda9e145fff8f5b276df SHA-256: 1f93d9b261f6de2aa955f4cb04b0dbf6f4803525ef987309c0138f9f5a1f141d
120 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 a redirector service. The primary malicious URL identified is https://ttraff.cc/pify?keyword=freeview+tv+guide+bbc+scotland, which is likely used to direct users to malicious content. The document body, though heavily obfuscated, contains references to the redirector URL and other PDF files hosted on various domains, suggesting a link farm or redirection scheme.

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=freeview+tv+guide+bbc+scotland
    • http://files.colossalsportsent.com/uploads/1/3/0/7/130739021/rofuwot-xunepowupububuz.pdf
    • http://files.breescircle.org/uploads/1/3/1/3/131381376/2215830.pdf
    • http://files.priestlysalvage.ca/uploads/1/3/1/8/131860787/peselavatowet.pdf
    • https://cdn.shopify.com/s/files/1/0433/1631/4277/files/genusovubede.pdf
    • https://cdn.shopify.com/s/files/1/0461/6250/9987/files/convert_cdr_to_ai_free.pdf
    • https://cdn.shopify.com/s/files/1/0434/4378/1792/files/1605571216.pdf
    • https://cdn.shopify.com/s/files/1/0439/8232/3870/files/historia_cateter_venoso_central.pdf
    • https://cdn.shopify.com/s/files/1/0431/6397/5835/files/41635404078.pdf
    • https://cdn.shopify.com/s/files/1/0430/9159/1321/files/mario_pipe_sound.pdf
    • https://cdn.shopify.com/s/files/1/0435/1826/3448/files/telerik_kendo_ui_spreadsheet.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_off00006d4a.bin
d5d85469825a51b4ec55b55f62205b316d7195363af371e7b996facb3f3aa5ce		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6D4A 5356 bytes
font_01_sfnt_off00007fa1.bin
4c67d355536e9afe7a165afd0066af8bcc992b24bdca86fdd88bbea4f5faefe3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7FA1 10612 bytes

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