Malicious PDF — malware analysis report

Static analysis result for SHA-256 2359fff163816beb…

MALICIOUS

PDF

41.0 KB Created: 2020-08-27 16:26:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 87de9e29b8737208acf06b4b6a7a21f4 SHA-1: cdfcfe8ea47b63a5fc410568d906e9c86e80cc19 SHA-256: 2359fff163816beb15b373955da09b2ebb579fbaae2d550b27dbbd7600e87482
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 heuristic specifically identifying it as a PDF SEO link farm. The primary malicious URL, https://ttraff.ru/pify?keyword=st+matthews+windham+nh, is flagged as a known malicious redirector. The document's purpose appears to be to distribute or manipulate search results through this extensive link farm, potentially leading users to malicious sites or unwanted content.

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=st+matthews+windham+nh
    • http://dadogi.thebikery.co.nz/uploads/1/3/2/6/132696414/4208f2.pdf
    • http://files.juneauflukes.org/uploads/1/3/0/7/130739892/pudefufoxe-tijute-vukugunimarog-nasoxonininovut.pdf
    • http://files.ellendonaldson.com/uploads/1/3/1/4/131407767/d56cc.pdf
    • http://dorojuv.megankijewskiseattleuniversitygraduateportfolio.com/uploads/1/3/0/7/130738836/keloripikeduxir.pdf
    • https://cdn.shopify.com/s/files/1/0432/9488/4000/files/grade_3_math_addition_worksheets.pdf
    • https://cdn.shopify.com/s/files/1/0433/8306/2678/files/free_download_islamic_books_urdu_language.pdf
    • https://cdn.shopify.com/s/files/1/0431/3687/6706/files/kofadasokivefaru.pdf
    • https://cdn.shopify.com/s/files/1/0427/6181/4172/files/carrion_game_free.pdf
    • https://cdn.shopify.com/s/files/1/0463/5131/9202/files/kindle_app_mac.pdf
    • https://cdn.shopify.com/s/files/1/0428/3020/0991/files/33358920245.pdf
    • https://cdn.shopify.com/s/files/1/0432/9802/9733/files/tufijonewum.pdf
    • https://cdn.shopify.com/s/files/1/0455/3677/2261/files/17646227722.pdf
    • https://cdn.shopify.com/s/files/1/0439/2330/8712/files/83582534209.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_off000063e4.bin
da203e4032b423e1e37fae8fa9dcbf24233550cf4ffbb96d0532c115c9bfabb6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x63E4 5132 bytes
font_01_sfnt_off00007545.bin
4db391a1833b26b31108518b0aa9465454f9f75d93fb2a02b715484085ca3817		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7545 10060 bytes

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