Malicious PDF — malware analysis report

Static analysis result for SHA-256 ec66bf02aaf09dde…

MALICIOUS

PDF

72.3 KB Created: 2021-02-18 05:15:28 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 9bbb84ef212c25258346961fe312d737 SHA-1: aaeaecf681a38d0c0f6fba74bc98d311cb414803 SHA-256: ec66bf02aaf09dde7bec004e5081cfcd3a62972a8415fa19f79b1fbfda4ebc35
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://jottigo.ru/wix?keyword=2008+suzuki+drz+400+manual PDF link annotation
    • http://naguvogegexaze.22web.org/demonstrative_pronouns_worksheets_grade_2.pdfIn PDF document text
    • http://setakini.22web.org/guwudazuvinipuzujekorit.pdfIn PDF document text
    • http://leduxebawini.22web.org/64274259359.pdfIn PDF document text
    • https://jetabasujupeg.weebly.com/uploads/1/3/4/7/134703241/1537277.pdfIn PDF document text
    • https://favaruzikab.weebly.com/uploads/1/3/4/8/134871436/wogarufufasukinakidu.pdfIn PDF document text
    • https://fusajebotiv.weebly.com/uploads/1/3/4/3/134320253/kapidaratumigakof.pdfIn PDF document text
    • https://wejilosadala.weebly.com/uploads/1/3/0/8/130815097/toxatemuk.pdfIn PDF document text
    • https://nekemobo.weebly.com/uploads/1/3/5/3/135323096/zesebimufigedet.pdfIn PDF document text
    • https://zuzedunili.weebly.com/uploads/1/3/4/4/134460484/ravem-volema-ruvumofo.pdfIn PDF document text
    • https://cdn.sqhk.co/wodelaganav/eggeM0J/dingy_synonym_word.pdfIn PDF document text
    • https://daradila.weebly.com/uploads/1/3/1/4/131438164/nejawanadebine.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://faxaxesaxejov.rf.gd/vafuro.pdfIn PDF document text
    • http://zuvolape.epizy.com/punctuation_marks_worksheet_esl.pdfIn PDF document text
    • http://ketanuviz.epizy.com/zamubu.pdfIn PDF document text
    • http://fejukuvazov.rf.gd/medici_masters_of_florence_music.pdfIn PDF document text
    • http://julivaradisakit.rf.gd/aoe_xanh_bn_chun.pdfIn PDF document text
    • http://rodobokojezaga.epizy.com/executive_branch_agencies_worksheet.pdfIn PDF document text
    • http://tezofer.rf.gd/b._ed_form_fill_up_2018.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_off0000dd71.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD71 5544 bytes
SHA-256: e8007cb6edbc23ac0688a2eb746772199f093435aa98307b7cfd518e206604a0
font_01_sfnt_off0000f03c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF03C 10724 bytes
SHA-256: a31170fb159ed951b7038f47a8fcd66711fd6ce87cfb232b859a6f8f649e35d5