Malicious PDF — malware analysis report

Static analysis result for SHA-256 a406c9e5dfa2cd05…

MALICIOUS

PDF

49.8 KB Created: 2020-08-12 14:16:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6c4d951c2f52ced846a2ee8e0ab44e89 SHA-1: ee0f0fdf35151ea73cbcbc48b850c263a6387f22 SHA-256: a406c9e5dfa2cd05577e467f21f22494b24fc41fad7cd7c09810fe99072e3711
120 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.com'. Additionally, it exhibits characteristics of a PDF link farm, with numerous links to external PDFs, many hosted on 'cdn.shopify.com'. The document body, though heavily obfuscated, contains the same malicious URL, suggesting an attempt to trick users into clicking it. The primary attack pattern involves redirecting users to malicious infrastructure.

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/pify?keyword=something+i+ve+been+meaning+to+tell+you+alice+munro+pdf
    • http://files.shecutz.com/uploads/1/3/1/4/131454523/f8ffb6aa26f.pdf
    • http://files.letspaintarabic.com/uploads/1/3/1/3/131379612/22ab9b14a11.pdf
    • http://juxusiwoz.cosmeticstandards.org.uk/uploads/1/3/1/4/131438572/6519089.pdf
    • https://cdn.shopify.com/s/files/1/0434/0049/5260/files/22515605418.pdf
    • https://cdn.shopify.com/s/files/1/0434/8834/6262/files/79876090865.pdf
    • https://cdn.shopify.com/s/files/1/0435/5329/2440/files/lopigevonowomefeteluxepo.pdf
    • https://cdn.shopify.com/s/files/1/0440/0755/5222/files/recursive_descent_parsing.pdf
    • https://cdn.shopify.com/s/files/1/0430/0151/2090/files/20127720161.pdf
    • https://cdn.shopify.com/s/files/1/0431/7813/1611/files/92867067056.pdf
    • https://cdn.shopify.com/s/files/1/0433/9325/3526/files/filehippo_reader_32_bit.pdf
    • https://cdn.shopify.com/s/files/1/0439/8071/8238/files/how_to_make_a_twitter_webhook.pdf
    • https://cdn.shopify.com/s/files/1/0431/0827/0244/files/75160472.pdf
    • https://cdn.shopify.com/s/files/1/0433/2670/1718/files/ronedovometowifaf.pdf
    • https://cdn.shopify.com/s/files/1/0432/3026/5511/files/brian_eno_cards_oblique_strategies.pdf
    • https://cdn.shopify.com/s/files/1/0434/4774/6716/files/18474830850.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_off000083d3.bin
2b32f736e25741d4f0af457b8656e3e05eddce3960345a8894acf879cacc99a9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x83D3 5796 bytes
font_01_sfnt_off00009775.bin
4003d197793920081a7599c04b8c6e99eddbbe92f8c7a28e47a16be02c8e4b39		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9775 9980 bytes

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