Malicious PDF — malware analysis report

Static analysis result for SHA-256 206ac32997ccf660…

MALICIOUS

PDF

77.0 KB Created: 2021-03-10 09:52:22 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-20
MD5: 915a1fd359213ca9fde1dec06c777815 SHA-1: 9baacaafb7087a02f9b9690ec1d825a617dbc868 SHA-256: 206ac32997ccf660e1d261fc9b90e3163daa0e05a12e87ed86f42207422b4b85
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous embedded URLs, with one specifically appearing as a search result for 'doll house furniture near me' leading to a suspicious domain. Heuristics indicate this PDF is a link farm hosted on disposable domains, and ML classifiers and ClamAV strongly flag it as malicious phishing content. The presence of embedded URLs suggests an attempt to redirect the user to malicious sites, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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://resalured.ru/strik?utm_term=doll+house+furniture+near+me PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4369781/normal_60274ec3e2ecd.pdfIn PDF document text
    • http://xiravudes.22web.org/assessment_report_ipcc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4385635/normal_600a1b5acec42.pdfIn PDF document text
    • http://zetopabuki.22web.org/lifebuvoranup.pdfIn PDF document text
    • http://riwuvodobopexu.mywebcommunity.org/simple_subject_verb_agreement_exercises.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4471252/normal_5fdac8aca663f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368235/normal_603734d6772be.pdfIn PDF document text
    • http://vudujupuboneg.22web.org/3483260586.pdfIn PDF document text
    • http://vazosuzited.22web.org/business_brochure_template_ppt.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4502833/normal_60273473a8ca6.pdfIn PDF document text
    • http://ribadubeko.scienceontheweb.net/massey_ferguson_35_parts_manual.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4502464/normal_5fcec02634f23.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4503584/normal_5ffe74324513d.pdfIn PDF document text
    • http://xevusezes.medianewsonline.com/dias_feriados_en_usa_noviembre.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4424997/normal_602da0f64fb6a.pdfIn PDF document text
    • http://sokelekife.iblogger.org/wajav.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367283/normal_600d13133f4a5.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://nudewewupapu.epizy.com/ford_explorer_transmission_fluid_change_cost.pdfIn PDF document text
    • http://dotizedulowej.rf.gd/pefuvimulenogivizetiwugi.pdfIn PDF document text
    • http://filopatoj.rf.gd/how_to_learn_art.pdfIn PDF document text
    • http://rixefixefasi.rf.gd/69802071378.pdfIn PDF document text
    • http://kozogasivufi.myartsonline.com/bogunanu.pdfIn PDF document text
    • http://kabekexivebinef.epizy.com/stages_of_frog_life_cycle_worksheet.pdfIn PDF document text
    • http://sitirij.rf.gd/gefufot.pdfIn PDF document text
    • http://vixasipa.rf.gd/sims_4_update_november_2020_time_uk.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_off0000f2f0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF2F0 5004 bytes
SHA-256: 442c6d80b57766c1c5e0619a2968dd348ca6c186da040eaea850008976b1b703
font_01_sfnt_off000103c9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x103C9 10108 bytes
SHA-256: 4f938ab935202144d6825e9eef721d888a07fe7bd63dd1aba5bbf7d540b0c99d

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