Malicious PDF — malware analysis report

Static analysis result for SHA-256 35d42eb4f24e9a4e…

MALICIOUS

PDF

72.1 KB Created: 2021-02-15 22:58:56 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: fa3b7419c32240e2d0f6005e7c305cd6 SHA-1: be9698cc2a7093fc7d55c5fe792458e162628077 SHA-256: 35d42eb4f24e9a4e04eaa0fcddc47a4bae82c781bb67e3fd0b2765621530be21
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://leonvi.ru/wb?keyword=overstreet%20comic%20book%20price%20guide%202019 PDF link annotation
    • https://nerutemiwuxofa.weebly.com/uploads/1/3/1/3/131398157/b4edca6b.pdfIn PDF document text
    • https://dukowitemodilel.weebly.com/uploads/1/3/5/3/135316140/bajojeninujov.pdfIn PDF document text
    • https://bexusisase.weebly.com/uploads/1/3/4/5/134596812/woxokizorumu_muzelapivuxo_raguvoxonomug.pdfIn PDF document text
    • https://semirenuzunep.weebly.com/uploads/1/3/5/3/135325284/wepojisidumav.pdfIn PDF document text
    • http://constructionhouse.info/61964671004vgfty.pdfIn PDF document text
    • https://wexubowepupewaw.weebly.com/uploads/1/3/1/8/131856394/kisetasanufefopub.pdfIn PDF document text
    • http://xozonline.ru/wawemesuxoronoxodekapu9o6sa.pdfIn PDF document text
    • http://vandify.com/ethical_approval_form_examples555mr.pdfIn PDF document text
    • https://morogixifidogaj.weebly.com/uploads/1/3/4/4/134497599/bfba143371cf92.pdfIn PDF document text
    • https://mozufakumijisa.weebly.com/uploads/1/3/5/3/135333945/9171286.pdfIn PDF document text
    • https://fegenogo.weebly.com/uploads/1/3/5/9/135981842/8437243.pdfIn PDF document text
    • https://nesamakamaxo.weebly.com/uploads/1/3/1/6/131636712/5b58833.pdfIn PDF document text
    • http://rubyshup.space/fixuwarajapulidam4g5u1.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://palulofegag.rf.gd/winuxalenexoligogurakur.pdfIn PDF document text
    • http://wulisuka.epizy.com/29903040804.pdfIn PDF document text
    • http://pewukexi.epizy.com/viwigipid.pdfIn PDF document text
    • http://kulixuvomewono.epizy.com/larepadam.pdfIn PDF document text
    • http://waxukoke.epizy.com/13541059354.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_off0000d995.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD995 5924 bytes
SHA-256: bbbb2d5280c58456c16de76124bd56ab30a69b268819ae81c823a7e4ed50b48f
font_01_sfnt_off0000edaf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEDAF 11072 bytes
SHA-256: b069429e899dc8155a29f7983ec915083444cdda96f93db2f816aea7dcb87ed9

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