Malicious PDF — malware analysis report

Static analysis result for SHA-256 80adad5393ebd4ef…

MALICIOUS

PDF

39.2 KB Created: 2020-08-12 13:36:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 65148846b86eba0fea24f5c2f6b0d27a SHA-1: 43435573169bef98f699184ed30b49e747506d59 SHA-256: 80adad5393ebd4ef11ca7420926c8d784d40f3e3eb819f91b619c55a8afb9dea
120 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, with one identified as a malicious redirector. The heuristic firings indicate this is a link farm designed to distribute malicious content. The primary malicious URL identified is https://ttraff.ru/wb?keyword=invertebrata%20dan%20vertebrata%20pdf, which likely serves as the initial point of compromise.

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/wb?keyword=invertebrata%20dan%20vertebrata%20pdf
    • http://files.thebird-dogs.com/uploads/1/3/1/4/131453559/080841b4dc28.pdf
    • http://files.gardenbaptistchurch.net/uploads/1/3/0/7/130738993/napati_nexugak.pdf
    • http://defis.meaganmichalskirmt.com/uploads/1/3/0/7/130740597/vebexo-rolezurumasefo.pdf
    • http://files.nataliarybczynski.com/uploads/1/3/1/4/131406659/e3be2a417c3.pdf
    • http://mabopib.alicekelseylewis.net/uploads/1/3/1/3/131384401/5918040.pdf
    • https://cdn.shopify.com/s/files/1/0435/5804/3807/files/puxemuzokazoke.pdf
    • https://cdn.shopify.com/s/files/1/0432/6395/1003/files/english_to_spanish_dictionary.pdf
    • https://cdn.shopify.com/s/files/1/0446/4692/4451/files/apollo_13_movie_questions.pdf
    • https://cdn.shopify.com/s/files/1/0431/8353/8331/files/go_pro_studio.pdf
    • https://cdn.shopify.com/s/files/1/0434/0006/9285/files/migaxeja.pdf
    • https://cdn.shopify.com/s/files/1/0437/4275/7029/files/92915400469.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/46946939033.pdf
    • https://cdn.shopify.com/s/files/1/0430/7261/8657/files/audio_score_full_download_full_version.pdf
    • https://cdn.shopify.com/s/files/1/0437/0753/1414/files/65172438216.pdf
    • https://cdn.shopify.com/s/files/1/0434/8330/0005/files/92153960722.pdf
    • https://cdn.shopify.com/s/files/1/0431/3651/6250/files/pathology_book_for_dmlt.pdf
    • https://cdn.shopify.com/s/files/1/0438/4112/6565/files/seperusebijariberetilova.pdf
    • https://cdn.shopify.com/s/files/1/0435/7878/5951/files/john_deere_l110_parts_manual.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_off00005c6e.bin
91c3006cc6d3deba4c5f1f473fb8a4bef26850b3375ace670272cc44d0f3e70d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5C6E 4960 bytes
font_01_sfnt_off00006d5d.bin
5c3b11b135296e2d50783626f00517977725d0422a870e9af71eae83b4ff79a3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6D5D 10148 bytes

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