Malicious PDF — malware analysis report

Static analysis result for SHA-256 cf3f0ebafaf9832b…

MALICIOUS

PDF

48.2 KB Created: 2020-08-20 01:48:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7d886b2785c54f7b30cc96c8a9d12eef SHA-1: f7d6fe4c8037f127baeede2ddd0d43e182409b34 SHA-256: cf3f0ebafaf9832bfbe9d2f1fd9053af11bc652420cf968993654e58aab7a7fe
120 Risk Score

Malware Insights

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

The PDF document contains a high number of embedded links, a common tactic for SEO poisoning and redirecting users to malicious sites. The primary malicious URL, https://ttraff.ru/pify?keyword=juvenile+polyposis+syndrome+guidelines, is flagged as a malicious redirector. While many other links point to benign Shopify domains, this is likely a technique to obscure the malicious intent and increase the perceived legitimacy of the document.

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.ru/pify?keyword=juvenile+polyposis+syndrome+guidelines
    • http://files.victoriouslynicole.com/uploads/1/3/2/6/132696048/mixoluzubisuja.pdf
    • https://cdn.shopify.com/s/files/1/0432/0631/2093/files/c_hash_table.pdf
    • https://cdn.shopify.com/s/files/1/0429/4931/2665/files/bioremediation_techniques.pdf
    • https://cdn.shopify.com/s/files/1/0440/9081/8712/files/youversion_bible_app_apkpure.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/wogol.pdf
    • https://cdn.shopify.com/s/files/1/0428/2528/5791/files/99350243196.pdf
    • https://cdn.shopify.com/s/files/1/0437/9531/6896/files/xapakuguvipa.pdf
    • https://cdn.shopify.com/s/files/1/0446/7880/7705/files/pdf_metadata_analysis_online.pdf
    • https://cdn.shopify.com/s/files/1/0437/6290/9335/files/vufiliwutuna.pdf
    • https://cdn.shopify.com/s/files/1/0430/0292/1111/files/convert_vce_file_to_free_online.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_off00007f5f.bin
b220c05a04064e30748c3931180a8377056773ab45ca565701a67c8814c0f451		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7F5F 5220 bytes
font_01_sfnt_off00009114.bin
dea9f236426c5da074fe3befe7c77ceaf18779b08d099421de3857c8d3c4cd9b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9114 10304 bytes

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