Malicious PDF — malware analysis report

Static analysis result for SHA-256 c6e4ca4598ec58ca…

MALICIOUS

PDF

66.6 KB Created: 2021-01-30 06:04:31 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 91b3490483e897eb70e137fbf29366bf SHA-1: 0d00bef2408d5158fcec47e531848ceec43e626c SHA-256: c6e4ca4598ec58ca4c8ef2bf2a9d9cd1f9e000e3aebe57173da751a30f18f6a6
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://maypoin.ru/wb?keyword=survival%20police%20prison%20escape%20plan PDF link annotation
    • https://guwuribi.weebly.com/uploads/1/3/0/8/130873976/e9a1d5bd4c61e.pdfIn PDF document text
    • https://kevititexozasen.weebly.com/uploads/1/3/2/7/132712545/6552172.pdfIn PDF document text
    • https://revawowi.weebly.com/uploads/1/3/5/3/135317167/2370624.pdfIn PDF document text
    • https://furimubabo.weebly.com/uploads/1/3/1/8/131856330/xalokuxateto.pdfIn PDF document text
    • http://lagujegivupani.22web.org/difference_between_coliform_and_enterobacteriaceae.pdfIn PDF document text
    • https://dorikorojuj.weebly.com/uploads/1/3/3/9/133987202/6158812.pdfIn PDF document text
    • https://pejifote.weebly.com/uploads/1/3/5/3/135348690/guniwokew.pdfIn PDF document text
    • https://cdn.sqhk.co/dukosisevu/hiUojjf/ditu_sms_a_cuba.pdfIn PDF document text
    • https://xuzulofapoxe.weebly.com/uploads/1/3/5/3/135325887/xadosel.pdfIn PDF document text
    • https://fugikoji.weebly.com/uploads/1/3/4/6/134611078/efbd41d8b74d49f.pdfIn PDF document text
    • https://cdn.sqhk.co/pixafosabow/iQQ7Ljh/natural_looking_acrylic_nails_short.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/gulapore/gonakivuwuj.pdfIn PDF document text
    • https://s3.amazonaws.com/vixuwogetiv/mokufejanolodutosare.pdfIn PDF document text
    • http://numifugok.rf.gd/20777688092.pdfIn PDF document text
    • http://sikopenopod.epizy.com/free_template_drupal_7._x.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_off0000c6a6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC6A6 5088 bytes
SHA-256: eca07eb7c0a3c0f35bb8480aac9fd415c3e50f0ca1ab136b5f5c7b7d52090ae1
font_01_sfnt_off0000d807.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD807 10976 bytes
SHA-256: 173b5d3b55fc457fec288bd4e113bf272f6d519ba8f96dbc9bb0bccefce2b6ed