Malicious PDF — malware analysis report

Static analysis result for SHA-256 b02b703fedf999b8…

MALICIOUS

PDF

66.5 KB Created: 2021-02-18 13:59:41 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: c8b8ca4ccbd8fb55a7db75d3f90ba10b SHA-1: b1a7bc86bcac03fc56e78f639e2805df017e460e SHA-256: b02b703fedf999b8ff87f8b0238925c85431a2f8ad1fb02e1067164d05395cf3
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://jottigo.ru/wix?keyword=geometry+volume+1+page+95+answers PDF link annotation
    • https://vawotitalu.weebly.com/uploads/1/3/2/7/132710714/9337409.pdfIn PDF document text
    • https://maladekokox.weebly.com/uploads/1/3/4/7/134745457/bitutuxakupobiwevuwa.pdfIn PDF document text
    • https://buritozube.weebly.com/uploads/1/3/0/7/130775753/zedekemilexa_zulokupapuzi_wupusanuvixo_pulozuxesexi.pdfIn PDF document text
    • https://gojemafofapuvog.weebly.com/uploads/1/3/2/6/132681271/jadikabola-waver.pdfIn PDF document text
    • https://matiposokatogu.weebly.com/uploads/1/3/0/7/130739068/4772578.pdfIn PDF document text
    • https://zefuriduzowav.weebly.com/uploads/1/3/0/7/130740504/3799485.pdfIn PDF document text
    • https://zavelodenewiguj.weebly.com/uploads/1/3/5/3/135314669/zarifogi.pdfIn PDF document text
    • https://xazulifego.weebly.com/uploads/1/3/4/7/134727283/merad.pdfIn PDF document text
    • https://dagaroxir.weebly.com/uploads/1/3/5/9/135973008/kovebubisa-zojezusup-zedewivozu-nukos.pdfIn PDF document text
    • https://memezuwiz.weebly.com/uploads/1/3/4/7/134702577/7973111.pdfIn PDF document text
    • https://pudorexejuvaw.weebly.com/uploads/1/3/1/4/131455832/5542039.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/pokixovuxik/ielts_reading_recent_actual_tests_2016.pdfIn PDF document text
    • https://s3.amazonaws.com/xozeb/how_to_feed_and_care_for_your_husband.pdfIn PDF document text
    • http://nuwumexuxesi.epizy.com/71590654578.pdfIn PDF document text
    • https://s3.amazonaws.com/bifadiwuwileji/mokenepubozajox.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_off0000c6dd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC6DD 5756 bytes
SHA-256: 985fd164dc0ab54ad785c4b2371e7257fa130d6aff743061e0c72a231d7d07cd
font_01_sfnt_off0000da8a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDA8A 10184 bytes
SHA-256: 40c0899926f2687be83cc0be4bf97c5f975679666e283269ee26a8ce84babb58