Malicious PDF — malware analysis report

Static analysis result for SHA-256 4491979ba375da83…

MALICIOUS

PDF

68.9 KB Created: 2021-03-01 09:58:08 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: e8313bc776a6b87d8734891e737183b4 SHA-1: cd1e672c6a7ddc23893ab47251fe2f0d82d6c0c0 SHA-256: 4491979ba375da83d2151535e25666dae718b4681b8fd55fc615fe672d30ea0b
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://xezojetit.ru/wix?keyword=hoover+floormate+manual+fh40190 PDF link annotation
    • https://bupedokan.weebly.com/uploads/1/3/1/6/131607930/538829.pdfIn PDF document text
    • http://fudipowituvu.22web.org/leronivakoxavegoxirefedu.pdfIn PDF document text
    • http://003-center.ru/72689263320bzhq1.pdfIn PDF document text
    • http://ses-sanobrabotka.ru/business_math_syllabus_high_school9idwz.pdfIn PDF document text
    • http://austritkfa.com/zemiravutewulenodo8lfqe.pdfIn PDF document text
    • http://levantemosaic.com/fekadeb5vlbq.pdfIn PDF document text
    • http://chatik85939775.fun/english_vocabulary_in_use_advanced_michael_mccarthy_felicity_o_dellitfgm.pdfIn PDF document text
    • https://dakijixubuleze.weebly.com/uploads/1/3/0/7/130740496/wupumenagifoxo.pdfIn PDF document text
    • https://vuzavadakugodo.weebly.com/uploads/1/3/4/8/134857872/8550482.pdfIn PDF document text
    • http://mewovapurifa.iblogger.org/omron_pedometer_amazon.pdfIn PDF document text
    • https://gitumakiwu.weebly.com/uploads/1/3/1/4/131437138/lefudikudiwazulekik.pdfIn PDF document text
    • http://fokikizuxijem.iblogger.org/livre_guide_du_routard_core_du_sud.pdfIn PDF document text
    • http://lumobumekola.getenjoyment.net/how_to_reset_your_rheem_water_heater.pdfIn PDF document text
    • https://dupizonax.weebly.com/uploads/1/3/1/3/131380343/kazamukeret-zogozanagi.pdfIn PDF document text
    • http://komaxinatobofe.medianewsonline.com/boxejeligum.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://xarozitapakegur.epizy.com/calculus_with_analytic_geometry_6th_edition.pdfIn PDF document text
    • http://xuxirifuv.rf.gd/dirty_whatsapp_stickers_apk.pdfIn PDF document text
    • http://vavuduzika.epizy.com/free_mac_2d_technical_drawing_software.pdfIn PDF document text
    • http://penixip.rf.gd/melamine_plywood_sheets_uk.pdfIn PDF document text
    • http://lokimutopilar.epizy.com/94460197326.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_off0000d0cf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD0CF 5288 bytes
SHA-256: 0f3775ee75c3937f354b6d2964e267cdfa85e0c519fa2cd9a3b18e9b1159e635
font_01_sfnt_off0000e2ae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE2AE 10596 bytes
SHA-256: 2c1616231fd78195dc02c7c98ea5f19572c80bcd36435b342aba7cf67263af6e