Malicious PDF — malware analysis report

Static analysis result for SHA-256 28065632e58ecaea…

MALICIOUS

PDF

79.7 KB Created: 2021-02-24 09:46:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 5aacb414b0ae1ce18a53e735c5f94806 SHA-1: aacc05d5ee1f6e1f1efa234867988e20a086253b SHA-256: 28065632e58ecaea2e5e25bd1b119a3e85794e447b6264a4f44eaca680a916ad
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://jacksth.ru/aws?utm_term=how+to+find+angle+measures+in+a+triangle+with+side+lengths PDF link annotation
    • https://cdn.sqhk.co/fezemepusap/diaTfij/crown_princess_cruise_ship_news.pdfIn PDF document text
    • https://cdn.sqhk.co/lobinazema/Eogfjh7/brick_crusher_machine_price_in_bangladesh.pdfIn PDF document text
    • https://vetazewufa.weebly.com/uploads/1/3/2/8/132814418/mikepe_vusijosa.pdfIn PDF document text
    • https://cdn.sqhk.co/vulovosovem/hhjcvhj/63660449540.pdfIn PDF document text
    • http://dunetetemob.22web.org/dupemeso.pdfIn PDF document text
    • https://cdn.sqhk.co/pimidima/hgggHSG/81843351786.pdfIn PDF document text
    • https://vamekatowozi.weebly.com/uploads/1/3/0/8/130814347/pukomofinarasifebubo.pdfIn PDF document text
    • https://cdn.sqhk.co/kixobaza/gfgics6/amorette_free_romance_books_online.pdfIn PDF document text
    • https://cdn.sqhk.co/jufebarur/je8OihJ/31092082569.pdfIn PDF document text
    • https://cdn.sqhk.co/masamiwe/HjcDgc3/37051860438.pdfIn PDF document text
    • https://didilajuti.weebly.com/uploads/1/3/4/5/134585724/dezot.pdfIn PDF document text
    • https://tusezewepoxir.weebly.com/uploads/1/3/4/3/134339989/risile.pdfIn PDF document text
    • https://xaxozugine.weebly.com/uploads/1/3/2/3/132303195/1407547.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/gagotaniwipure/bugazatav.pdfIn PDF document text
    • https://s3.amazonaws.com/robumuduluwise/bridal_shower_scattergories_free_template.pdfIn PDF document text
    • http://natireda.epizy.com/what_are_the_types_of_errors_in_experiments.pdfIn PDF document text
    • https://s3.amazonaws.com/tanapilamaxi/sebururuterogedunowu.pdfIn PDF document text
    • http://mudopijafaj.epizy.com/installing_ubuntu_server_guide.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_off0000faea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFAEA 5376 bytes
SHA-256: e92fde6a510185232d2c18d71e345fbd4f2a578c0db7760f22ce2e788c3a5d3d
font_01_sfnt_off00010d1b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10D1B 10608 bytes
SHA-256: 199ac9fd08b22f6eac46bd9a84640b6c2393e9ef63df821e4cad2fea547da77b