Malicious PDF — malware analysis report

Static analysis result for SHA-256 1362a8aa0ca1e7aa…

MALICIOUS

PDF

44.1 KB Created: 2020-10-16 09:42:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-17
MD5: 39f3df57d66aa502f119814ec4d4ee64 SHA-1: edcb7ff53e4ec513a4bbb7c44200f8485f78286a SHA-256: 1362a8aa0ca1e7aa7be35065e2c41df105d15dc92b65dcb53ab4206363d8a584
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=communicative+methods+of+teaching+grammar+pdf In PDF document text
    • https://dimaxafazeza.weebly.com/uploads/1/3/1/4/131453031/porukofosu.pdfIn PDF document text
    • https://jabiratunibi.weebly.com/uploads/1/3/2/6/132683422/835af5.pdfIn PDF document text
    • https://guwomenod.weebly.com/uploads/1/3/0/8/130873843/297c0.pdfIn PDF document text
    • https://genamimiwovem.weebly.com/uploads/1/3/1/6/131636881/9277085.pdfIn PDF document text
    • https://xojerajap.weebly.com/uploads/1/3/1/3/131384359/mezevoxinokimuwamibu.pdfIn PDF document text
    • https://viweposedijul.weebly.com/uploads/1/3/1/0/131070314/7b8a6b7cb9.pdfIn PDF document text
    • https://jezaxegare.weebly.com/uploads/1/3/1/3/131380636/c13c26f56bd733.pdfIn PDF document text
    • https://gevafitasib.weebly.com/uploads/1/3/1/3/131380901/1429013.pdfIn PDF document text
    • https://redunexodozik.weebly.com/uploads/1/3/0/8/130814050/7fa9a0f.pdfIn PDF document text
    • https://kubupukadumu.weebly.com/uploads/1/3/1/3/131382740/6707276.pdfIn PDF document text
    • https://xojerajap.weebly.com/uploads/1/3/1/3/131384359/116ec7b6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365589/normal_5f870a0fa98b5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366009/normal_5f8760cc58c6b.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/59cb7777-a7f3-4cab-9038-8ca3b9a7ac7b/fegajuwifakajinajid.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f5a2eecb-4ef4-400d-859d-f14f6075d3e5/73555798574.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f974cd8f-b949-468c-a14f-64f4756921bb/17933677397.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0500/2159/7333/files/muxazesubejalarojam.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0496/0527/9911/files/38026977127.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_off00006d94.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6D94 5504 bytes
SHA-256: 0a12022d9c2c874a698d41839e3677ada8f03f57afdbbfc819be6e00024ed93c
font_01_sfnt_off00008021.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8021 10160 bytes
SHA-256: 5a00c54dfca289db75e43313b5b7cd2a285c887603de1b73a169756f0f8b13b2

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