Malicious PDF — malware analysis report

Static analysis result for SHA-256 e2aa5e66146845f1…

MALICIOUS

PDF

39.8 KB Created: 2020-10-01 23:15:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 6e836bd9fb8697a8ac0e50a9049cab42 SHA-1: e35885789e5b1a33c7de03ff420b6716fee4c510 SHA-256: e2aa5e66146845f1a1712c84b934f12979606d951b85942cb2d76136a87232d6
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=pokemon+omega+ruby+rom+download+desmume In PDF document text
    • http://rawozeref.debbieyoung.co.uk/uploads/1/3/1/4/131406798/8193974.pdfIn PDF document text
    • http://sigaj.origin-of-religion.com/uploads/1/3/0/9/130969336/2027843.pdfIn PDF document text
    • http://vawugumu.mariachienhoustontx.com/uploads/1/3/1/6/131636777/78a91c6.pdfIn PDF document text
    • http://files.barebeautymilnrow.com/uploads/1/3/0/7/130738823/kugevefakikaged-koretenuvivagu-veganuvifoguj-lisudamagexupu.pdfIn PDF document text
    • http://files.redearthbulbs.com/uploads/1/3/0/8/130814032/481905.pdfIn PDF document text
    • http://rudan.pacificplaycompany.com/uploads/1/3/1/3/131381078/jepof_sodexag_bonizorele_biwesi.pdfIn PDF document text
    • http://futir.stellastephenson.com/uploads/1/3/0/8/130874038/zatonitolunepa.pdfIn PDF document text
    • http://files.cremationartglass.com/uploads/1/3/0/7/130775848/8454970.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/f116d0ca-8140-4ee2-bf3b-48f21566441e/64605206851.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/064d4a2a-c9c9-4c86-9e2d-7729004d316a/ponujekubavenotafewogi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5ddde846-d1ba-4886-9369-79c5bb4d0731/lebebuwes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0496/6203/4069/files/pexuseval.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/2212/5720/files/66683133826.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_off00005bcb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5BCB 5544 bytes
SHA-256: 4a769e6e132a3d23b25db4ad747cf1022e96eaee2573c12697d87d601cc0257c
font_01_sfnt_off00006ea7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6EA7 10452 bytes
SHA-256: 655c141be86abed5773b4723bef0f6980567c4e4ee6ad2ff266f95c229c9ecd4