Malicious PDF — malware analysis report

Static analysis result for SHA-256 a59eb95c35030382…

MALICIOUS

PDF

77.0 KB Created: 2021-04-29 21:48:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-20
MD5: 0860574f197c66b7086029fbdcb66f1e SHA-1: 4eb3f05d7e3bd62ed92766b2926dfd71a6d875c0 SHA-256: a59eb95c350303825dc214870c66e7d858ee20ddad04b81fc333c54bcb858dd9
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains numerous embedded URLs, with a primary suspicious URL pointing to 'mezovuduw.ru'. Heuristics indicate this PDF is part of a link farm on disposable hosting, suggesting a phishing or malware distribution attempt. Although no scripts were explicitly extracted, the PDF structure and embedded links are indicative of malicious intent, likely to redirect users to a compromised site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

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://mezovuduw.ru/strik?utm_term=armitron+women%2527s+watch+rose+gold PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4382187/normal_5fe5463023ab2.pdfIn PDF document text
    • http://vpntop.info/boston_market_caesar_salad_nutritionq73gp.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4409614/normal_6034cb7cce94f.pdfIn PDF document text
    • https://xigujevaw.weebly.com/uploads/1/3/4/7/134701692/sefexaxu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4471948/normal_606b486ac22c1.pdfIn PDF document text
    • http://malanefire.sportsontheweb.net/hysys_v10_manual.pdfIn PDF document text
    • http://ighelperscenter.com/volume_price_trend_indicator_formulabm11t.pdfIn PDF document text
    • http://ponemofetu.scienceontheweb.net/23308645665.pdfIn PDF document text
    • https://bomexufimewaw.weebly.com/uploads/1/3/4/5/134517434/figurabidatefim_wejamanig_polekatevuta.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4409607/normal_606df7a6725ee.pdfIn PDF document text
    • https://babibogek.weebly.com/uploads/1/3/1/3/131379554/poriv_golunenofax_wajekarurabam.pdfIn PDF document text
    • http://hangzhoumetal.ru/mini_dvi_to_hdmi_adapter_best_buyozkck.pdfIn PDF document text
    • https://sawisede.weebly.com/uploads/1/3/2/6/132681865/kasol.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4476301/normal_6029d68dcd73d.pdfIn PDF document text
    • http://openplafond.xyz/binabexiwakaxozesozizajekuvgrw.pdfIn PDF document text
    • http://xijivedijimidip.mygamesonline.org/l_alphabtisation_en_cote_d_ivoire.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/kifutizijebuj/best_ambient_sounds.pdfIn PDF document text
    • http://sejineje.epizy.com/lawogimenuxoki.pdfIn PDF document text
    • https://s3.amazonaws.com/muwemivumazulax/61390623039.pdfIn PDF document text
    • http://miwewugewu.atwebpages.com/vusewaz.pdfIn PDF document text
    • https://s3.amazonaws.com/dewazewokib/wuzatibumebigezog.pdfIn PDF document text
    • http://xenivut.epizy.com/bunetexovifuwesejediwad.pdfIn PDF document text
    • http://pawuzax.onlinewebshop.net/anemia_en_gestantes_minsa.pdfIn PDF document text
    • http://xizilagitakov.epizy.com/zepivufupufaxukinaruzonad.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_off0000e036.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE036 5468 bytes
SHA-256: db23061831faa7899d7622522d118818ede5dbe1acd35fee4fc933f0044174c4
font_01_sfnt_off0000f2b7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF2B7 22612 bytes
SHA-256: 7be5a75f787a3c8bfd67932bedca1f2a8266a4ef5486864bfce2dad101faab00

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