Malicious PDF — malware analysis report

Static analysis result for SHA-256 34c345dc74505d3b…

MALICIOUS

PDF

41.4 KB Created: 2020-09-17 19:12:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ab059d3f5d78634b6d420e5cbe073a8f SHA-1: 6209175653a0b1c3afa9f38aa352dbb87a7d8ea6 SHA-256: 34c345dc74505d3b58bad22ad0c14ccbe6ccad62a23e93f10485e20da32bd5f5
150 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link, directing users to 'https://ttraff.me/wix?keyword=classical+conversations+statement+of+faith+catholic'. This indicates a phishing or scam attempt. The document also contains a PDF link farm, with many links pointing to Shopify-hosted PDFs, likely for SEO manipulation or to obscure the malicious link. The ML classifier strongly flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.me/wix?keyword=classical+conversations+statement+of+faith+catholic
    • https://cdn.shopify.com/s/files/1/0429/9862/8501/files/fools_rush_in_movie_for_mobile.pdf
    • https://cdn.shopify.com/s/files/1/0437/6533/4165/files/business_communication_today_10th_edition_download.pdf
    • https://cdn.shopify.com/s/files/1/0427/9864/5404/files/destro_lock_pvp.pdf
    • https://cdn.shopify.com/s/files/1/0434/5623/3638/files/personal_development_plan_template.pdf
    • https://cdn.shopify.com/s/files/1/0427/4018/7303/files/4334738104.pdf
    • https://cdn.shopify.com/s/files/1/0477/4661/3404/files/amortization_schedule_excel_formula.pdf
    • https://cdn.shopify.com/s/files/1/0430/8844/5604/files/tasurupowojolajakot.pdf
    • https://803002ff-2137-4dd9-8755-29643f2d8905.filesusr.com/ugd/d90490_6f2519407afe4269b16dcfc13cbbf9bf.pdf?index=true
    • https://97f27533-4eac-4bb8-81e5-82255e6a0776.filesusr.com/ugd/5c8b2f_00946a23c228489f96f3e11c6948a2b6.pdf?index=true
    • https://cdn.shopify.com/s/files/1/0429/7441/2949/files/38182608207.pdf
    • https://cdn.shopify.com/s/files/1/0427/4143/2487/files/90026013999.pdf
    • https://cdn.shopify.com/s/files/1/0435/0309/1872/files/ahmadu_bello_university_direct_entry_form_2019.pdf
    • https://cdn.shopify.com/s/files/1/0440/6693/0840/files/kopir.pdf
    • https://cdn.shopify.com/s/files/1/0430/7465/0261/files/alphabet_city_book.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_off0000669a.bin
c7173e3b7b0ffb5c37fe3f459db16c8532d3801d56ffb7d5552a48e5d91f3c74		 pdf-font-stream PDF embedded font (sfnt) at offset 0x669A 5088 bytes
font_01_sfnt_off000077be.bin
bfe5e6b09afed5d37cc6918d15349e5000d5e346815bfa0e35971b24341a1eaf		 pdf-font-stream PDF embedded font (sfnt) at offset 0x77BE 9608 bytes

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