Malicious PDF — malware analysis report

Static analysis result for SHA-256 f01ebc941105c467…

MALICIOUS

PDF

41.7 KB Created: 2020-08-30 23:08:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3d00ec448663dcd8d285ded07c127169 SHA-1: f781dce4ba098f37b18e88195e8f73ba6695b5c3 SHA-256: f01ebc941105c4675035d684f97faf52c722b7751c89dd94b7fbaedf6c338db5
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Phishing: Spearphishing Attachment T1204.002 Malicious Link

The PDF document contains a heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.me/wix?keyword=folletos+para+imprimir+para+ni%25C3%25B1os'. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded links, many pointing to Shopify domains. The document body, though heavily obfuscated, contains the same malicious URL, suggesting a social engineering attempt to trick users into visiting a potentially harmful site.

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=folletos+para+imprimir+para+ni%25C3%25B1os
    • https://cdn.shopify.com/s/files/1/0437/0586/0248/files/crown_xti_4002_manual.pdf
    • https://cdn.shopify.com/s/files/1/0430/7006/2754/files/podetomimanupotewubejera.pdf
    • https://cdn.shopify.com/s/files/1/0434/0708/1630/files/biological_classification_objective_questions.pdf
    • https://cdn.shopify.com/s/files/1/0432/2512/0927/files/bexawiku.pdf
    • https://cdn.shopify.com/s/files/1/0429/1297/2963/files/11238176420.pdf
    • https://cdn.shopify.com/s/files/1/0435/0862/9663/files/67250256187.pdf
    • https://cdn.shopify.com/s/files/1/0432/9259/0236/files/college_board_sat_book.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/99324429390.pdf
    • https://cdn.shopify.com/s/files/1/0432/4317/6091/files/mcgraw_hill_chemistry_matter_and_change.pdf
    • https://cdn.shopify.com/s/files/1/0428/1024/5279/files/xexezigebirikebaxu.pdf
    • https://cdn.shopify.com/s/files/1/0437/6274/5501/files/nifibuxepafepilizazo.pdf
    • https://cdn.shopify.com/s/files/1/0434/1415/9521/files/basic_immunology_abbas_6th_editi.pdf
    • https://cdn.shopify.com/s/files/1/0435/4444/5092/files/46334270430.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_off00006433.bin
d05add484b60d78da7aa7c810a154446c1af0f26138f42d5563e7398c7ef1dfa		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6433 5132 bytes
font_01_sfnt_off00007546.bin
caaafcb93d8ea475e703dfdcf680ae4b992cac805487412ab0cc3a685670d81d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7546 10664 bytes

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