Malicious PDF — malware analysis report

Static analysis result for SHA-256 2e38be15886db876…

MALICIOUS

PDF

73.2 KB Created: 2021-03-16 00:38:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: ad2b08909d8dd0749c1f457128163507 SHA-1: ed3677f1de583e6975f86846f17ffaf6b3e4daac SHA-256: 2e38be15886db876de79ade01c735ee14643d17951e21a794d8aa76690627d7f
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://zajinet.ru/wix?keyword=world+of+wheels+roller+skating+superior+wi PDF link annotation
    • https://dazenesulamese.weebly.com/uploads/1/3/1/1/131164173/ladeketiwi.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4404310/normal_5fd99e7834bc3.pdfIn PDF document text
    • http://zibikudupe.mywebcommunity.org/1._4_biologists_tools_and_technology.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4407986/normal_5fe900397cea9.pdfIn PDF document text
    • https://juxufosuzuvol.weebly.com/uploads/1/3/1/4/131437906/380603819e98b18.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4462697/normal_5fcd503546ae6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4478146/normal_60384f47ee604.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4391920/normal_5fd79d330f255.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4377125/normal_6028aba9ca9b2.pdfIn PDF document text
    • https://tarutugiwom.weebly.com/uploads/1/3/5/3/135326066/tebulab-bufukep-tebakumudafizef-lotisepi.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4425009/normal_6018df0896c34.pdfIn PDF document text
    • https://vumizopefi.weebly.com/uploads/1/3/5/3/135313358/4215122.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4489607/normal_603d493a07f09.pdfIn PDF document text
    • https://bonesinidojesu.weebly.com/uploads/1/3/4/5/134591006/fupajaxufitil.pdfIn PDF document text
    • http://muzoc.xyz/ferukufolalivoliwojod0ssh.pdfIn PDF document text
    • http://help-nanny.site/will_gum_pockets_heal1gqet.pdfIn PDF document text
    • http://jorowijedo.mywebcommunity.org/nimijuxumovuwegutotugovi.pdfIn PDF document text
    • http://rumepado.mypressonline.com/89619655989.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/tajimipojimo/93666704486.pdfIn PDF document text
    • http://zibelasavu.atwebpages.com/61990313655.pdfIn PDF document text
    • https://s3.amazonaws.com/numegubowalonan/armalite_rifle_font_free.pdfIn PDF document text
    • https://s3.amazonaws.com/midipes/violin_sheet_music_christmas.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_off0000dfc7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDFC7 5472 bytes
SHA-256: 37def98fa2297838b6f4463a0fb592498baa6d8b672634a2e93f615d443eeb96
font_01_sfnt_off0000f27a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF27A 10576 bytes
SHA-256: f567ff108d36f8d90014f7527789cdca432e7584f9ac16ae17b92195d12fa441