Malicious PDF — malware analysis report

Static analysis result for SHA-256 2128a5e2eacb825e…

MALICIOUS

PDF

39.6 KB Created: 2020-08-23 06:55:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3da4d50302e415a427d48c914500865e SHA-1: 560c2b86ac45204290b84515ef92a54d4903f335 SHA-256: 2128a5e2eacb825ecc767c57187de9920b2eb79df9f89e070a3fb2f4c62e6abf
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, identified as a PDF link farm. One of these links, 'https://ttraff.com/pify?keyword=broiler+pan+vs+cookie+sheet', points to known malicious redirector infrastructure. The document body, though heavily obfuscated, contains this URL and other Shopify URLs, suggesting a lure to external content. The primary attack pattern observed is the use of malicious links to redirect users to potentially harmful sites.

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=broiler+pan+vs+cookie+sheet
    • http://files.theeducationalfarm.org/uploads/1/3/0/7/130775221/dalozezipuderili.pdf
    • http://files.d-aleksandar.com/uploads/1/3/1/4/131411539/fotez-vowaresolu-bipaworebo-rejedo.pdf
    • https://cdn.shopify.com/s/files/1/0435/0250/2048/files/silumefuxavewamelabuvo.pdf
    • https://cdn.shopify.com/s/files/1/0437/7968/6549/files/60789391967.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/zututekafufefosapebuk.pdf
    • https://cdn.shopify.com/s/files/1/0451/8169/8199/files/format_code_visual_studio_code.pdf
    • https://cdn.shopify.com/s/files/1/0431/5286/7477/files/dd2_incursion_guide.pdf
    • https://cdn.shopify.com/s/files/1/0432/8597/1110/files/database_normalization_questions_and_answers.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/26450106566.pdf
    • https://cdn.shopify.com/s/files/1/0433/6589/2245/files/59938509726.pdf
    • https://cdn.shopify.com/s/files/1/0432/5107/3174/files/xupadopi.pdf
    • https://cdn.shopify.com/s/files/1/0429/2804/6233/files/borowasex.pdf
    • https://cdn.shopify.com/s/files/1/0437/2581/5959/files/black_south_african_history.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_off00005d5d.bin
9df1e36e4187e4213789e22ecfbc4f0ece7b7c9d433aacca2503365e2dd5a03b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5D5D 5192 bytes
font_01_sfnt_off00006f01.bin
5ca79d77ada41adf3e8a122678160367308bcaafacf8f4ee380b8b53bbd0d9a2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6F01 10240 bytes

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