Malicious PDF — malware analysis report

Static analysis result for SHA-256 7593671de65213c9…

MALICIOUS

PDF

28.6 KB Created: 2020-10-16 10:40:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-30
MD5: 6392a033ed937af87afaff172b2fa6a0 SHA-1: ff1a622b449f13cfbe891f1604d09bc50608576e SHA-256: 7593671de65213c968b9b6270bede427e054164d68c03f159078fe88663237cb
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a link that redirects to a known malicious infrastructure, likely as part of a link farm or SEO poisoning scheme. The document body and metadata indicate it was generated by wkhtmltopdf, and it contains numerous embedded URLs, many of which are benign but one points to a malicious redirector. This suggests the primary purpose is to drive traffic to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9964

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://ggtraff.ru/strik?keyword=hemodialysis+access+fundamentals+and+advanced+management+pdf In PDF document text
    • https://cdn-cms.f-static.net/uploads/4367278/normal_5f882a2ca9c31.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365594/normal_5f8817a361248.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365626/normal_5f8723897330b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369777/normal_5f88812e3c9fe.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367287/normal_5f88b37d79041.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6535ee19-2bbe-4a79-8bdd-fd6c3be5e9dd/45873554083.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/80d41c6c-7cc6-46ef-888f-18245fa51eea/71119753317.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/17e5b3ba-4081-43d5-8f81-2b1b048be485/46284798058.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c1182bee-9bd7-4fdb-b1eb-b57b57e68cce/dodukuxosixavofomazuf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9518/5821/files/vipisuwotozotetuxoti.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0485/3379/9067/files/best_consular_build_kotor.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3415/6967/files/55121018390.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5841/3216/files/rudy_cant_fail_lyrics.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0482/5822/0187/files/git_flow_cheatsheet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0498/8626/5498/files/misurujufuvegatab.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/1158/6722/files/beowulf_skills_application_test_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6454/8762/files/rupogazexo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8683/0998/files/breath_of_the_wild_2_logo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0792/4635/files/pengertian_susu_pasteurisasi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0499/7074/1416/files/amnicon_falls_state_park_swimming.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/9597/6856/files/lego_star_wars_blue_minikits_episode_1_chapter_6.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8827/1773/files/1447054913.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0496/5158/1079/files/n_gage_untuk_android.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7368/3100/files/33769279151.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0499/8873/1042/files/wowekubul.pdfIn PDF document text

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