Malicious PDF — malware analysis report

Static analysis result for SHA-256 a2df207cb091d382…

MALICIOUS

PDF

42.2 KB Created: 2020-10-16 12:06:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 24cde570ea8342df7fd5ccdb4fee26ee SHA-1: 336f233621e230bc8e1fcbef6a9f06ccae584cdc SHA-256: a2df207cb091d3823cc44387245e11f64d7532fda371933745c00b0a94ca322e
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://gettraff.ru/123?keyword=apple+terminal+commands+pdf In PDF document text
    • https://xizirogubo.weebly.com/uploads/1/3/0/7/130776043/6534821.pdfIn PDF document text
    • https://mogilifus.weebly.com/uploads/1/3/0/7/130739831/8347111.pdfIn PDF document text
    • https://kidunaxu.weebly.com/uploads/1/3/1/4/131437100/lokidoradid.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366335/normal_5f8727c025cc2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368782/normal_5f885286ce389.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367005/normal_5f873b81a1d93.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369905/normal_5f881ba5613a0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366633/normal_5f873b5f456cc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367645/normal_5f874f7e937b6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365660/normal_5f8841cbbf475.pdfIn PDF document text
    • https://gusumadanu.weebly.com/uploads/1/3/2/6/132695601/nogewamuvuzoli-kadujuzusuzo-jagebepazo-faposu.pdfIn PDF document text
    • https://folukufisika.weebly.com/uploads/1/3/1/3/131384255/boxabefi_jamerigejasiv.pdfIn PDF document text
    • https://pevugubak.weebly.com/uploads/1/3/2/7/132740457/kijovemafup.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365639/normal_5f871014df02d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366018/normal_5f888c1a26e57.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4373271/normal_5f892a2b8967a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369903/normal_5f884679a02ee.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/1/0436/5592/1817/files/dewalt_table_saw_stand_assembly.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0482/6021/9035/files/does_pa_have_the_death_penalty_2020.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/5017/5126/files/rain_command_minecraft.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0495/6605/6604/files/lunas_howl_quest_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0496/1563/4581/files/nolarovesofebo.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_off0000686b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x686B 5288 bytes
SHA-256: f5ddc427ead1a6132c7c4a438767d644d0f808f1d916b620a055144cf8eb4cd0
font_01_sfnt_off00007a3e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7A3E 9660 bytes
SHA-256: 825ab20b83eb532f115f22e57e22732fbfd2e9e3899a489ea27969f6d14baee7

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