Malicious PDF — malware analysis report

Static analysis result for SHA-256 f5796c85de3d57a6…

MALICIOUS

PDF

41.6 KB Created: 2020-08-30 02:14:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7036555cbb8485b3f7a189713b8e92f7 SHA-1: 2ef52807dfdc4b7cc7131e58c98d12f30867d7b2 SHA-256: f5796c85de3d57a6ce453248def4202ae4f741797e71ff3d86527d621647bd22
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, a technique often used for SEO poisoning or to direct users to malicious sites. One of the embedded URLs, 'https://ttraff.ru/wix?keyword=betty+crocker+picture+cookbook+1961', is flagged as a known malicious redirector. While many other links point to benign Shopify domains, the presence of the malicious redirector indicates a phishing or malware distribution attempt.

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/wix?keyword=betty+crocker+picture+cookbook+1961
    • https://cdn.shopify.com/s/files/1/0435/4621/4564/files/detroit_lions_injury_report_for_week_6.pdf
    • https://cdn.shopify.com/s/files/1/0430/6645/8266/files/nespresso_capsules_catalogue.pdf
    • https://cdn.shopify.com/s/files/1/0431/3910/4929/files/vivosefasuje.pdf
    • https://cdn.shopify.com/s/files/1/0440/5955/8053/files/vasevubagoxizi.pdf
    • https://cdn.shopify.com/s/files/1/0431/9982/4034/files/agricultural_engineering_board_exam_reviewer_with_answer_key.pdf
    • https://cdn.shopify.com/s/files/1/0432/5598/8374/files/63845172999.pdf
    • https://cdn.shopify.com/s/files/1/0434/0704/8860/files/54120146144.pdf
    • https://cdn.shopify.com/s/files/1/0440/2262/8502/files/medical_surgical_nursing_brunner_and_suddarth_13th_edition.pdf
    • https://cdn.shopify.com/s/files/1/0435/1305/3338/files/vagijezogegejina.pdf
    • https://cdn.shopify.com/s/files/1/0434/5665/9621/files/tepejexibusukebazatu.pdf
    • https://cdn.shopify.com/s/files/1/0433/3414/0072/files/waltz_of_the_flowers_flute.pdf
    • https://cdn.shopify.com/s/files/1/0439/7613/0718/files/42267864521.pdf
    • https://cdn.shopify.com/s/files/1/0430/7641/9744/files/44529454744.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_off00006213.bin
0a5d71ca771210a63c65f7088ca19262b4615a6e0e7c2e74d27e97443a4b2052		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6213 5224 bytes
font_01_sfnt_off000073fc.bin
5e6354ac75f6e27d000b7a6c582644784a62e07d3cdc0df825002d55fb17e656		 pdf-font-stream PDF embedded font (sfnt) at offset 0x73FC 10300 bytes

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