Malicious PDF — malware analysis report

Static analysis result for SHA-256 160f2b5c474e6889…

MALICIOUS

PDF

95.9 KB Created: 2021-02-09 03:16:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 6e819b200de7370e723fa3e88a8a21a4 SHA-1: 44c2007f183e3a1e23e6cd677e7e54692cf4c111 SHA-256: 160f2b5c474e688985e4eb1adea51a21d47a08323c26d9778c23359fef7054aa
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://druttle.ru/wb?keyword=beacon%20school%20uniform%20list PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4481821/normal_6010c4f981d62.pdfIn PDF document text
    • https://mepagalupotope.weebly.com/uploads/1/3/4/2/134265457/36b7867a6bc832b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4451348/normal_601dd9073fc37.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4446388/normal_5fe3181b572df.pdfIn PDF document text
    • https://jekowidemovo.weebly.com/uploads/1/3/4/7/134702183/xowubuzavixumopuzeji.pdfIn PDF document text
    • https://nidiladidubupa.weebly.com/uploads/1/3/4/7/134753920/mefupakif.pdfIn PDF document text
    • https://xenuwupe.weebly.com/uploads/1/3/5/3/135329542/rodorumafiwo.pdfIn PDF document text
    • http://storedubai.shop/30897309901ca111.pdfIn PDF document text
    • https://siroxaje.weebly.com/uploads/1/3/4/0/134000026/581661.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4460063/normal_600f220bac67e.pdfIn PDF document text
    • https://xogepojofaridel.weebly.com/uploads/1/3/2/7/132741214/kosawo.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4384142/normal_5fed3476df576.pdfIn PDF document text
    • https://fogunovavak.weebly.com/uploads/1/3/2/6/132681822/pufesefozoxu.pdfIn PDF document text
    • https://terimigekebala.weebly.com/uploads/1/3/0/7/130738799/nejajamaro_daxugekefokoka_bonadeg_noparajo.pdfIn PDF document text
    • https://taxajoberaruvu.weebly.com/uploads/1/3/4/3/134320235/2193387.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off00013d94.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13D94 5172 bytes
SHA-256: 23e5a72be40d138b594b3312c67b5ff64995ae87f6df2f5e61bb7222b693a3c7
font_01_sfnt_off00014efe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14EFE 10592 bytes
SHA-256: f038b1bdfd01bb6bffd2a57fc85faa5d9d65c4a2dc7a47ed3962d478aa62042f