Malicious PDF — malware analysis report

Static analysis result for SHA-256 e4b73d8082a129ca…

MALICIOUS

PDF

56.1 KB Created: 2020-10-09 08:57:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-19
MD5: 092eed3e14564853f470e04eba56bd60 SHA-1: 128496b49bb792d4330d83fad8b0695b77855124 SHA-256: e4b73d8082a129ca2ed1ca406010ccd5d0a9abb907712b509e947e48b67bceb2
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/pify?keyword=huo+yuan+jia+movie In PDF document text
    • http://xivovum.triplecrownlacrosse.com/uploads/1/3/1/4/131453558/detax.pdfIn PDF document text
    • http://xavum.allpointsbuild.com/uploads/1/3/1/4/131408791/lanapolar_xixixo_nipunazajero_dobap.pdfIn PDF document text
    • http://jaxebepo.demornewarrenddub.com/uploads/1/3/2/7/132741194/3434626.pdfIn PDF document text
    • http://files.glcfaithformation.org/uploads/1/3/0/7/130775470/parodugefusibupe.pdfIn PDF document text
    • http://pavuz.questforreadingsuccess.com/uploads/1/3/1/8/131857284/rufekase_dovefigomevu.pdfIn PDF document text
    • https://site-1039378.mozfiles.com/files/1039378/93656328521.pdfIn PDF document text
    • https://site-1038344.mozfiles.com/files/1038344/60724774270.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/adeccce0-cf95-4b0c-9499-7e4e9357db7f/jedaxiw.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9113c33a-b0b5-495e-9de4-566921e1d7a6/36009415214.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b081b058-3ed2-4b30-98cc-12c168f72658/92451707603.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a0921095-42b6-4d12-b30c-4e505ce7791b/67294594211.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0479/3781/4684/files/66134434548.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8200/6172/files/sowususagilul.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6886/7231/files/area_of_unusual_shapes_worksheet.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000078ab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x78AB 6824 bytes
SHA-256: a121bd066d65a9c557cf4b9ebd81406f6a1082a0ac1cf00a8afa09f8c0e8743f
font_01_sfnt_off00008fd1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8FD1 4524 bytes
SHA-256: 76ab9fe8b0a8b5b74107341d49c4815928522c96b59febef69245854dfccce5e
font_02_sfnt_off00009f1e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9F1E 11064 bytes
SHA-256: b4d12544fd3ce7d5c0b31c8f6297806bcd959035c32a83e50ccbd0915599781b
font_03_sfnt_off0000c3d7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC3D7 4324 bytes
SHA-256: d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378

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