Malicious PDF — malware analysis report

Static analysis result for SHA-256 c74682b4481a680d…

MALICIOUS

PDF

58.4 KB Created: 2020-08-31 23:43:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 797b8696d6f8d68e8fc09fcc0a9e27e9 SHA-1: 808a0069011a611cc534dcab2b3fd0b1b19f677a SHA-256: c74682b4481a680ddbeb25d74c7a15707324f48bdad664b0b721ba5c16c1ee22
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains embedded links, one of which points to a known malicious redirector at 'ttraff.com'. The document body, though heavily obfuscated, includes the same URL, suggesting it's the primary lure. The presence of a link farm heuristic further indicates an attempt to distribute malicious content or engage in SEO manipulation for malicious purposes. No scripts were extracted, limiting the analysis of direct payload execution.

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.com/wix?keyword=nice+guidelines+diabetes+2015+pdf
    • https://cdn.shopify.com/s/files/1/0434/2117/1864/files/bt_phone_no_to_report_a_fault.pdf
    • https://cdn.shopify.com/s/files/1/0433/4518/2888/files/lobaferisiva.pdf
    • https://cdn.shopify.com/s/files/1/0430/5967/5293/files/31185028316.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/pufabupenidobuxix.pdf
    • https://cdn.shopify.com/s/files/1/0430/6275/5490/files/french_dictionary_app_android_free.pdf
    • https://cdn.shopify.com/s/files/1/0435/9539/9325/files/nosiniragon.pdf
    • https://cdn.shopify.com/s/files/1/0428/1057/2967/files/cambridge_ielts_6_reading_test_3.pdf
    • https://cdn.shopify.com/s/files/1/0427/7505/2454/files/http_nclcil_in_recruitment_application_form.pdf
    • https://cdn.shopify.com/s/files/1/0463/5443/2161/files/company_portfolio_template_word_free.pdf
    • https://cdn.shopify.com/s/files/1/0436/4802/4741/files/49753011688.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/85450973079.pdf
    • https://cdn.shopify.com/s/files/1/0432/7863/1072/files/sigukosudubesajofopu.pdf
    • https://cdn.shopify.com/s/files/1/0432/6395/1003/files/data_analysis_courses_for_beginners.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/budazasinopuxa.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_off0000a5d4.bin
4de7f67e82725b2f86241de0c542720497e6617eb3de64fa1856e86159007f2d		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA5D4 5784 bytes
font_01_sfnt_off0000b9ad.bin
f1db843a5c86b68b6cd9e97847daf56b7ac282b331cc79783a7eb3a8bc582212		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB9AD 10252 bytes

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