Malicious PDF — malware analysis report

Static analysis result for SHA-256 7a5e0ea8a5808786…

MALICIOUS

PDF

44.2 KB Created: 2020-10-17 20:16:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-19
MD5: 50b87e5e200c7b38d0e851e370fc9478 SHA-1: 50def31fa8ae62a4519ff353a1c823dc23db1e8d SHA-256: 7a5e0ea8a58087860af66a8ed728a7d7458bbe07e42ca03befbcecf0df983b74
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=titanite+chunk+farming+dark+souls In PDF document text
    • https://dujewukemapaf.weebly.com/uploads/1/3/1/4/131453220/9238198.pdfIn PDF document text
    • https://lodirunesu.weebly.com/uploads/1/3/0/8/130874391/3326255.pdfIn PDF document text
    • https://nipufijupetobug.weebly.com/uploads/1/3/1/4/131482996/rorujexafovixikebago.pdfIn PDF document text
    • https://fimosezit.weebly.com/uploads/1/3/0/7/130775491/poberopubusoxi.pdfIn PDF document text
    • https://fijojonibiw.weebly.com/uploads/1/3/2/6/132681787/vifotatilaw.pdfIn PDF document text
    • https://fuparududewon.weebly.com/uploads/1/3/1/8/131856041/5621482.pdfIn PDF document text
    • https://gusumadanu.weebly.com/uploads/1/3/2/6/132695601/womanawiwurek_dipewububexuti_tudanado.pdfIn PDF document text
    • https://keniwuki.weebly.com/uploads/1/3/1/4/131483234/vaxukekiwurefebe.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/1/0484/9126/6198/files/cosx_sinx_graph.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0632/7975/files/lactobacillus_casei_gram_stain.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0496/0364/1507/files/sineseraxazarix.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0482/5297/7313/files/pedantic_literary_definition.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7422/3269/files/14811453599.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a4614841-8957-4116-8114-3f64e19d3b54/lirawukokup.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a121813b-0f39-4247-a944-3b345bdd9858/93069256578.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6d23c723-5e4d-4cc5-b592-257f37d89c82/68434378304.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fdbccfd4-2e12-4c4f-8d2e-db511e121b22/74844616478.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/95e79e64-e438-40e8-adf0-d6f0d6857196/89665543401.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f03d0829-f0e7-4d6f-8627-3cd980242424/milova.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

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_off00006e23.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6E23 5448 bytes
SHA-256: d619972af887325cb60f8f13458008229910499784c561f9661c2b7a5c666199
font_01_sfnt_off00008078.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8078 10304 bytes
SHA-256: b079484099bb612e0c57dbc1a692562170517fba1061d1a610be3cbbf244edd4

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