Malicious PDF — malware analysis report

Static analysis result for SHA-256 993a4029a8f4b0cf…

MALICIOUS

PDF

43.6 KB Created: 2020-08-29 20:04:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5982c65014f8a0727eea77bf3bb41374 SHA-1: 00233217333de105b0f15e5a66c3b8a366e9deef SHA-256: 993a4029a8f4b0cf84312193e28762d46bb531c5093d62f73c9df669e52df31d
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 flagging it as a 'PDF SEO Link Farm'. The primary malicious URL identified is 'https://ttraff.ru/wix?keyword=all+eldritch+invocations', which is also flagged as a malicious redirector. The document body, though heavily obfuscated, contains references to this URL and other Shopify links, suggesting a lure to external, potentially harmful, 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/wix?keyword=all+eldritch+invocations
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/mofofuledezenededur.pdf
    • https://cdn.shopify.com/s/files/1/0431/8475/0747/files/51267364831.pdf
    • https://cdn.shopify.com/s/files/1/0463/6085/4683/files/nonprofit_executive_director_board_report_template.pdf
    • https://cdn.shopify.com/s/files/1/0438/3087/0173/files/29882053400.pdf
    • https://cdn.shopify.com/s/files/1/0434/5207/2089/files/appsense_10._1.pdf
    • https://cdn.shopify.com/s/files/1/0433/4954/1017/files/84370783364.pdf
    • https://cdn.shopify.com/s/files/1/0431/5276/9192/files/making_the_team_a_guide_for_managers.pdf
    • https://cdn.shopify.com/s/files/1/0434/4945/0661/files/40129149393.pdf
    • https://cdn.shopify.com/s/files/1/0433/8742/0835/files/67137850462.pdf
    • https://cdn.shopify.com/s/files/1/0435/5381/6728/files/trait_theories_of_leadership.pdf
    • https://cdn.shopify.com/s/files/1/0431/7154/5237/files/namorado_de_aluguel_grtis.pdf
    • https://cdn.shopify.com/s/files/1/0448/2826/2560/files/corpus_linguistics_and_linguistic_theory.pdf
    • https://cdn.shopify.com/s/files/1/0436/4166/7734/files/13175982673.pdf
    • https://cdn.shopify.com/s/files/1/0461/7971/3177/files/capitalism_and_socialism_worksheet.pdf
    • https://cdn.shopify.com/s/files/1/0433/3748/2405/files/koxozejavonakaxupo.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_off00006dcd.bin
3b169627b4f88d3da9bf3b3cec5d8b5753d19f15a1a2b9f4908e44de51986459		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6DCD 5076 bytes
font_01_sfnt_off00007efc.bin
7a6b54573ad30d48544a06944f6bd9366cc3b7e93dd1263365c4eac5fcd42dc6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7EFC 10320 bytes

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