Malicious PDF — malware analysis report

Static analysis result for SHA-256 34b6a6f87d9d7c6b…

MALICIOUS

PDF

67.7 KB Created: 2020-12-23 09:57:27 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 7840da7a8744b41a6d78900712cbc75b SHA-1: 34ad69e250cdcaf99455076f224407b2f5c09c1a SHA-256: 34b6a6f87d9d7c6bcdd904181a4b17072c4f884a5d0dd0a86973a3bcd4212700
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://trafficel.ru/wb?keyword=ivry%20vr%20black%20and%20white PDF link annotation
    • https://muxamaxipusitu.weebly.com/uploads/1/3/4/4/134470051/5395d0f29.pdfIn PDF document text
    • https://mawijazug.weebly.com/uploads/1/3/1/3/131380733/6915889.pdfIn PDF document text
    • https://gimogelego.weebly.com/uploads/1/3/4/6/134601730/tikafuju.pdfIn PDF document text
    • https://dafuzimobolu.weebly.com/uploads/1/3/4/4/134498283/4614613446be914.pdfIn PDF document text
    • https://dolojimopa.weebly.com/uploads/1/3/4/8/134887070/a057429f958e9f3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379961/normal_5fb5a5e8a9d5a.pdfIn PDF document text
    • https://litolojinoforiw.weebly.com/uploads/1/3/4/7/134721995/tatexijinuzexago.pdfIn PDF document text
    • https://zenefuzivoxog.weebly.com/uploads/1/3/4/1/134108933/6675146.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4481422/normal_5fbb92fc66d90.pdfIn PDF document text
    • https://bedizegoresupa.weebly.com/uploads/1/3/1/3/131379398/lonevu.pdfIn PDF document text
    • https://lovunekigip.weebly.com/uploads/1/3/4/6/134685916/993071.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382781/normal_5fb99d1ac1b95.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/9072637d-de1a-413a-a201-dd9eec15fbf2/xaxuv.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e7d9c485-c568-4e8d-8e0a-39c4b7d67ec0/98996024410.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/18be68ad-07b6-4e3a-b62d-97a9113e073b/13783494275.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_off0000ca54.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCA54 5244 bytes
SHA-256: 820023285ba88da7f44f31eeed0dace7bcfc415069336eb500abec2e9ab2941a
font_01_sfnt_off0000dc41.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC41 11136 bytes
SHA-256: e3c71b519f8f3cb1b6c9cfc6dd3d09f03d809c629870ae0e7987ad8498546e2f

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