Malicious PDF — malware analysis report

Static analysis result for SHA-256 d2a07e57434c02f1…

MALICIOUS

PDF

45.7 KB Created: 2020-10-26 10:51:33 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-12-26
MD5: c5858c30fb791791864aa83267c3be04 SHA-1: c283f002136a5ec9e52f0430f4c908337d2f6f0a SHA-256: d2a07e57434c02f14dbc74747ae88114920e5538129e420c2f2a46ed04e25478
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/strik?keyword=remote+control+cargo+ship In PDF document text
    • https://gapixupat.weebly.com/uploads/1/3/1/6/131637313/d268a163.pdfIn PDF document text
    • https://wavutokemik.weebly.com/uploads/1/3/4/3/134309613/januwesa-ronupu-xapigoxodujolij.pdfIn PDF document text
    • https://viwuwobigoku.weebly.com/uploads/1/3/1/3/131378942/tefidasixenabi.pdfIn PDF document text
    • https://repugonajipivup.weebly.com/uploads/1/3/0/8/130814926/tavowibekonivubuf.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4409257/normal_5f967e8cb75d5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4373259/normal_5f8962f3502b0.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off000073b3.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off000073b3.bin)
    • https://uploads.strikinglycdn.com/files/c2a521e6-8b06-45fd-b74b-6d98e7198477/76484323253.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/572a4173-2538-4b1b-aa87-5156cee27191/98364534210.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8ef860f7-6c60-4ddc-a6cb-3d1aceff6dc3/97684292676.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f46b9150-4a72-44c2-b936-0dbb834d310e/ziggy_marley_beach_in_hawai.pdfIn PDF document text
    • https://s3.amazonaws.com/xafaxotaful/90856865336.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/9690/2294/files/befebof.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5305/6149/files/kazuma_kaneko_works.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/4800/4515/files/stihl_ms250_parts_chain.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0504/2703/5846/files/gojubagijejirumovajoxodof.pdfIn PDF document text
    • https://s3.amazonaws.com/salade/sample_aptitude_test_for_employment_with_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/henghuili-files2/40331685365.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 extracted file (font_00_sfnt_off000073b3.bin)

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000073b3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x73B3 5352 bytes
SHA-256: 6da67f60fcb14e8780a8f32159e034c0d8f0be5aec2f323da71ffa4a4a8f15b9
font_01_sfnt_off000085c1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x85C1 10548 bytes
SHA-256: 1b54d7231988898c981d2eeda0fc0d92374460ef7dee8af950d94c1271412c9f

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