Malicious PDF — malware analysis report

Static analysis result for SHA-256 e50d3f03c3f94fb9…

MALICIOUS

PDF

71.6 KB Created: 2021-02-15 16:06:27 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 4946977a3350a82937c6d59ff576666d SHA-1: 7ed80bd16d985b8ae9e3b6837960691ead7436f1 SHA-256: e50d3f03c3f94fb969418a97b2773d0913215f4d3bed6c85457cf2a649cede31
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://bologen.ru/aws?utm_term=fender+passport+event+pa+system+review PDF link annotation
    • https://cdn.sqhk.co/mitejapeki/XghjHjg/knights_table_stainforth_afternoon_tea.pdfIn PDF document text
    • https://cdn.sqhk.co/kewukapugino/Wy7ic3X/63610502091.pdfIn PDF document text
    • https://cdn.sqhk.co/pamavunawi/fhcK4ig/1_to_100_numbers.pdfIn PDF document text
    • https://cdn.sqhk.co/rapedipular/UhjANge/color_roll_3d_reviews.pdfIn PDF document text
    • https://benikadavax.weebly.com/uploads/1/3/5/9/135964790/ralopufovotijokelu.pdfIn PDF document text
    • http://revasifeg.22web.org/chiclete_com_banana_discografia.pdfIn PDF document text
    • https://guxuperotasase.weebly.com/uploads/1/3/4/3/134311101/3325014.pdfIn PDF document text
    • http://smcjd.com/67324870663i2q08.pdfIn PDF document text
    • http://naturapple.space/916407864569ntj0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4469633/normal_5fd88b7c5215c.pdfIn PDF document text
    • https://guzarimu.weebly.com/uploads/1/3/4/6/134608133/zoviwiniganagokifemo.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://vijamutekaga.rf.gd/spanish_direct_object_pronouns_questions_and_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/bulujono/14404168120.pdfIn PDF document text
    • https://s3.amazonaws.com/xomudufe/best_small_editor.pdfIn PDF document text
    • https://s3.amazonaws.com/toguvaju/help_informatica_pocos_de_caldas_telefone.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_off0000da2a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDA2A 5280 bytes
SHA-256: 398a6b779ac3349acd938a746c9fe4ff572a20d7b91961902989c7773facf986
font_01_sfnt_off0000ec22.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC22 10988 bytes
SHA-256: ad0d7b66467aed05cc553231afd26908d136313761d03690230e1427bc091c1d