Malicious PDF — malware analysis report

Static analysis result for SHA-256 28762612feb244e3…

MALICIOUS

PDF

67.8 KB Created: 2021-02-19 19:41:07 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 053c3007b69002640767282f4c8a464d SHA-1: 473c168f71186dbf70b46e8f10292ba6f9c5f7c6 SHA-256: 28762612feb244e3cf925ac357d06484d265bb21679f1c80505bb1789e3ffbf0
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://seumenha.ru/wb?keyword=top%2010%20business%20topics PDF link annotation
    • https://mokomowu.weebly.com/uploads/1/3/5/9/135969792/f01f369fc1728.pdfIn PDF document text
    • https://sawotulexude.weebly.com/uploads/1/3/5/2/135298589/zedulobudugaxul-xidujoliru.pdfIn PDF document text
    • https://febosefukeja.weebly.com/uploads/1/3/5/3/135324858/ed2e9.pdfIn PDF document text
    • http://bozigojinodebux.iblogger.org/maniga.pdfIn PDF document text
    • https://tusozokusex.weebly.com/uploads/1/3/4/6/134678333/sabatudelipumogija.pdfIn PDF document text
    • https://cdn.sqhk.co/figegixo/ooge25d/13634824231.pdfIn PDF document text
    • https://cdn.sqhk.co/daposofoxig/bjgedie/superhero_street_crime_infinity_war.pdfIn PDF document text
    • https://cdn.sqhk.co/dokukavifig/5jdG3Dd/real_gangster_crime_3_game_play_online.pdfIn PDF document text
    • https://cdn.sqhk.co/mizenopujoli/Kx9Phe8/baby_panda_world_app.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://rilefup.epizy.com/fetudoxoberuvanitesomakam.pdfIn PDF document text
    • http://jumivozapiv.rf.gd/best_pathology_textbooks_residents.pdfIn PDF document text
    • http://sunemixawuvija.epizy.com/wosepemafuv.pdfIn PDF document text
    • http://vojilub.rf.gd/homonyms_worksheet_for_grade_4.pdfIn PDF document text
    • http://posivunoloreweb.rf.gd/how_to_do_a_tarot_3_card_spread.pdfIn PDF document text
    • http://sopavitagokowa.rf.gd/programming_with_microsoft_visual_basic_2017_8th_edition_download.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_off0000d08c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD08C 4872 bytes
SHA-256: ff6a75e10478562f825a66e7ed4cc19b2fcbb9e998d42f6352e845a280421e84
font_01_sfnt_off0000e13d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE13D 9892 bytes
SHA-256: b4d5753b2ef64561f822ca94047be8a33185ab8e41f95cdebae953eec196b4b8