Malicious PDF — malware analysis report

Static analysis result for SHA-256 226ad53b9defc48e…

MALICIOUS

PDF

75.4 KB Created: 2021-02-27 01:54:43 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 1b236dcf75e1291115b4a23ba52fd548 SHA-1: 4afee6bf0b462dd08673b65d2dfcb3eeea3a6c3b SHA-256: 226ad53b9defc48e05f60cb878f270877275f5b36c2d224245f40bfef8360b7e
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://resalured.ru/award?keyword=lg+true+balance+washer+and+dryer+stackable PDF link annotation
    • http://ladowijujeto.iblogger.org/datasheet_7805_regulator.pdfIn PDF document text
    • https://vebuwume.weebly.com/uploads/1/3/5/3/135349689/8637324.pdfIn PDF document text
    • https://jeludumekidi.weebly.com/uploads/1/3/2/7/132740852/lananadodu_goviro.pdfIn PDF document text
    • https://zemapefim.weebly.com/uploads/1/3/4/4/134485651/4941564.pdfIn PDF document text
    • https://wevenakexeg.weebly.com/uploads/1/3/1/4/131438808/9980850.pdfIn PDF document text
    • https://nupinowag.weebly.com/uploads/1/3/0/8/130814423/suvabelajetexu.pdfIn PDF document text
    • https://modisogisutoval.weebly.com/uploads/1/3/5/3/135390942/venofugewujenutujo.pdfIn PDF document text
    • https://wikejawuwe.weebly.com/uploads/1/3/1/4/131437941/kugesatonopa.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://kapivuvarebe.rf.gd/linen_bed_sheets_ikea.pdfIn PDF document text
    • https://s3.amazonaws.com/kudufigunabi/are_you_addicted_novel_book_1.pdfIn PDF document text
    • http://kixulal.rf.gd/lizatujaxabokatumoli.pdfIn PDF document text
    • http://pizibajavodup.epizy.com/believer_live_performance.pdfIn PDF document text
    • http://wubogijogazerew.epizy.com/bantu_church_of_christ_songs.pdfIn PDF document text
    • http://dogurof.epizy.com/ruzabaj.pdfIn PDF document text
    • http://dabirojab.rf.gd/ziziduluvokugavag.pdfIn PDF document text
    • http://giratas.epizy.com/bridge_building_game_pc_free.pdfIn PDF document text
    • http://jalovunenenema.epizy.com/abound_abbott.pdfIn PDF document text
    • http://gasezavixexiv.epizy.com/john_deere_x360_mower_parts.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_off0000ea47.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA47 5540 bytes
SHA-256: 2174009410129aa1ecaf108110dade19130e506931b58093dd89933688e570bd
font_01_sfnt_off0000fd32.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFD32 10264 bytes
SHA-256: dfb0ee0dfb5673033054080104a3dfc5e683e8c9b3eb6865b6a43898d9b55ecd