Malicious PDF — malware analysis report

Static analysis result for SHA-256 75cfaabb8559c8b6…

MALICIOUS

PDF

46.6 KB Created: 2020-10-14 20:46:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 60225e2ceb343ad8e1b01f7954d8ea18 SHA-1: 69fbe6c516fce06beae247d079fdd2c81cbc1db1 SHA-256: 75cfaabb8559c8b622832b99f46b1509630d33ef9328f1880649fb4fbbcac7cd
184 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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://cctraff.ru/123?keyword=dialectos+del+espa%25C3%25B1ol+en+el+peru+pdf In PDF document text
    • https://jeponiruwapin.weebly.com/uploads/1/3/0/7/130776483/ludawaxed_ritazi_pixoxir_visutan.pdfIn PDF document text
    • https://jakedekokobara.weebly.com/uploads/1/3/1/3/131381480/83905a54a030772.pdfIn PDF document text
    • https://jeponiruwapin.weebly.com/uploads/1/3/0/7/130776483/28332.pdfIn PDF document text
    • https://dutitujazekap.weebly.com/uploads/1/3/0/8/130814390/18ad995.pdfIn PDF document text
    • https://gimejexoxixaza.weebly.com/uploads/1/3/1/8/131872185/e5bcd2697.pdfIn PDF document text
    • https://site-1036680.mozfiles.com/files/1036680/68546821836.pdfIn PDF document text
    • https://site-1039899.mozfiles.com/files/1039899/63717449571.pdfIn PDF document text
    • https://site-1043662.mozfiles.com/files/1043662/76494507595.pdfIn PDF document text
    • https://site-1039903.mozfiles.com/files/1039903/58636674332.pdfIn PDF document text
    • https://site-1039933.mozfiles.com/files/1039933/45721709596.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366050/normal_5f8721318001d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366632/normal_5f871d69714d2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366659/normal_5f87325e581ba.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366033/normal_5f871801126fd.pdfIn PDF document text
    • https://guwomenod.weebly.com/uploads/1/3/0/8/130873843/ramugimexixepaba.pdfIn PDF document text
    • https://tavumake.weebly.com/uploads/1/3/2/7/132740551/9382396.pdfIn PDF document text
    • https://pevugubak.weebly.com/uploads/1/3/2/7/132740457/kijovemafup.pdfIn PDF document text
    • https://nudojafobedem.weebly.com/uploads/1/3/1/3/131379550/vopovajibupoti-goxufomef-rufijagotebi-susukeveribu.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0488/4519/3381/files/zuvigogebimebemataxava.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/5298/5251/files/plaza_house_furniture_selinsgrove_pennsylvania.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1666/6786/files/mathematics_vision_project_reviews.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0499/9823/3760/files/zedepujupomijek.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0496/5043/4211/files/wazofugerebot.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007105.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7105 5360 bytes
SHA-256: 0a31c502253de6c8f5187b9931e34c89afe69c8b0fb86f7347f48bcd3faf9696
font_01_sfnt_off000082ff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x82FF 12940 bytes
SHA-256: 4bab66332b4ba1134cfe56cd273f7ec77d723a05a6ff2dfe264f6c84021220ac

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