Malicious PDF — malware analysis report

Static analysis result for SHA-256 401204888a695a7a…

MALICIOUS

PDF

40.0 KB Created: 2020-08-25 07:21:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8fe06ab3df9a9ea6a25c168130c668fd SHA-1: 8d6e59340c7001bc4ec4518b7c0be99a5ac54855 SHA-256: 401204888a695a7a51b05def7dac33d0f4bfe45183b7e88a9de82ad2fd8a625a
120 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.com'. The document body, though heavily obfuscated, also contains this URL and numerous other links, many hosted on Shopify, suggesting a link farm or content distribution strategy. The primary attack pattern involves tricking the user into visiting the malicious redirector.

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=letter+cutting+guidelines
    • http://files.lakegenevapsychologist.com/uploads/1/3/1/6/131636692/notebisameku.pdf
    • https://cdn.shopify.com/s/files/1/0427/9628/6111/files/91369143454.pdf
    • https://cdn.shopify.com/s/files/1/0439/1819/6891/files/latin_english_dictionary_free.pdf
    • https://cdn.shopify.com/s/files/1/0436/4202/8190/files/mevojiboda.pdf
    • https://cdn.shopify.com/s/files/1/0429/3237/1622/files/nexejubamowebug.pdf
    • https://cdn.shopify.com/s/files/1/0429/0691/0887/files/fuposij.pdf
    • https://cdn.shopify.com/s/files/1/0427/6633/6167/files/wupakimiwudorisiripop.pdf
    • https://cdn.shopify.com/s/files/1/0434/3015/0296/files/84933262423.pdf
    • https://cdn.shopify.com/s/files/1/0431/4385/6279/files/balanced_diet_information_ks2.pdf
    • https://cdn.shopify.com/s/files/1/0428/1604/5222/files/70172724350.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_off0000605b.bin
fb56de6207a6a1ad771b98779fe8cfc8a480b56db6c04704be5749309c65547a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x605B 4840 bytes
font_01_sfnt_off000070e1.bin
ba823619c368a69a0aa2dfe633330ddcda6f741d2086e9362b55e9e7636cbeea		 pdf-font-stream PDF embedded font (sfnt) at offset 0x70E1 10192 bytes

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