Malicious PDF — malware analysis report

Static analysis result for SHA-256 74667a8364fdbd3a…

MALICIOUS

PDF

65.8 KB Created: 2021-02-09 02:35:24 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 7cad357499a893c87e20efb8255e9d3a SHA-1: 32143bd6089b89dc4ecb50f3e82f0a994884cb20 SHA-256: 74667a8364fdbd3a408d2cfa23204802f7abcc36ed5ea9328b30e7403e6a1772
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • 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 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://baarspo.ru/123?utm_term=river+springs+charter+school+san+jacinto PDF link annotation
    • https://cdn.sqhk.co/munoforifuso/je3jiFC/kubicki_bass_guitar_for_sale.pdfIn PDF document text
    • https://cdn.sqhk.co/dokukavifig/jcjdcqB/azamara_journey_refurbishment_2020.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4487631/normal_600a40984717f.pdfIn PDF document text
    • https://cdn.sqhk.co/xemugugafot/fcif5gf/junaw.pdfIn PDF document text
    • https://cdn.sqhk.co/lidumezuvir/sjejFhV/8550909237.pdfIn PDF document text
    • http://4gusevshop.space/surface_area_of_nets_worksheet_kuta04i9x.pdfIn PDF document text
    • https://cdn.sqhk.co/govazilose/heDZkND/gas_prices_at_costco_abbotsford.pdfIn PDF document text
    • http://yognat.space/queen_violin_sheet_music_book5umh4.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://xitiwefebulu.rf.gd/70055824064.pdfIn PDF document text
    • http://nujunawefati.epizy.com/31063717201.pdfIn PDF document text
    • http://gaposajalumawes.rf.gd/java_windows_8._1_64_bit.pdfIn PDF document text
    • http://gebuzabode.epizy.com/30_days_squat_challenge.pdfIn PDF document text
    • http://joratunezawaxa.epizy.com/nakunegibenu.pdfIn PDF document text
    • http://nimunofat.epizy.com/91375473327.pdfIn PDF document text
    • http://kejakum.rf.gd/bootstrap_4_form_input_border_color.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_off0000c479.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC479 5340 bytes
SHA-256: e5c6e7f0694956a011971759f083d324368a8c4b5414429c267eb341d4e78c2e
font_01_sfnt_off0000d6b5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD6B5 10388 bytes
SHA-256: a05168435513e3e1bd08b1db03ad6d29f5242f28b5a4f32f579b49d6ddffcf0c