Malicious PDF — malware analysis report

Static analysis result for SHA-256 250b6a0f3db9902e…

MALICIOUS

PDF

63.7 KB Created: 2021-02-09 03:52:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 683d4cd9abfd01d7e995b8baa8d71977 SHA-1: cfcb54e278615157e1db4d663969601f17c94245 SHA-256: 250b6a0f3db9902e81ecb5a8e1d2aa253b234926afcb50e59a4dbb5b0612f160
214 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://yafferge.ru/wb?keyword=don In PDF document text
    • https://cdn.sqhk.co/kulabokirow/idvgfOb/pegumekibepaxaxipop.pdfIn PDF document text
    • https://cdn.sqhk.co/ruwonumatag/ijkyOsP/shattered_glass_movie_review.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4484356/normal_6001c7303f8e5.pdfIn PDF document text
    • https://vatovuturok.weebly.com/uploads/1/3/1/8/131856009/wugabo_dawusilex.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4456685/normal_6012a25bc4333.pdfIn PDF document text
    • https://cdn.sqhk.co/tajiwikiter/hghhX1S/taco_bell_chicken_gordita_crunch_calories.pdfIn PDF document text
    • https://cdn.sqhk.co/lakarejof/djgG2Dl/wugowerunikegu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4471711/normal_5fe70c05edd68.pdfIn PDF document text
    • https://cdn.sqhk.co/zizaratijiga/jcDfjgl/gubidubomudone.pdfIn PDF document text
    • https://jipagulus.weebly.com/uploads/1/3/1/3/131379543/vozulajudawub_zetepowerilaje_momawimojegapux_lopite.pdfIn PDF document text
    • https://cdn.sqhk.co/xaxovowupofa/idRjiOt/oblivion_sky_tower_3d_model.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://didewuwu.epizy.com/formule_chimique_en_anglais.pdfIn PDF document text
    • https://s3.amazonaws.com/nevovumowa/texozasanite.pdfIn PDF document text
    • http://xofunuxemijowex.rf.gd/59702515300.pdfIn PDF document text
    • https://s3.amazonaws.com/genukopapovixo/livestock_production_and_management.pdfIn PDF document text
    • http://fonimegalidoxu.epizy.com/46968168868.pdfIn PDF document text
    • http://sumidemeg.epizy.com/saucony_guide_iso_2.pdfIn PDF document text
    • https://s3.amazonaws.com/widofafane/easy_pumpkin_carving_face_templates.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_off0000bbcf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBBCF 5640 bytes
SHA-256: 45076c30633040586bb0397ba00027f26a03f05fa3b9058a8e67208569d4b60e
font_01_sfnt_off0000cf0f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCF0F 10136 bytes
SHA-256: 0980de2add460caf51a95781ec7696f5f460d82490599e5df3d0d9947e63fd2a