Malicious PDF — malware analysis report

Static analysis result for SHA-256 cda72ef8368ff433…

MALICIOUS

PDF

71.7 KB Created: 2021-02-27 06:14:23 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 599f09efe7454512cb9581a7b4b81be8 SHA-1: ea034083d0e57e7aaf9ae51efaa87310a8b3bb26 SHA-256: cda72ef8368ff4338d3a950fb365ac995cc8520b2a894fd64495e8cc1150f594
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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://dugedepap.ru/wix?keyword=city+of+pittsburgh+garbage+collection+schedule+2020 PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4493209/normal_5fd2ff115ade7.pdfIn PDF document text
    • https://cdn.sqhk.co/gubisagebuto/9Si1Urv/7080415405.pdfIn PDF document text
    • http://togurebuk.66ghz.com/synonym_and_antonym_worksheets_4th_grade.pdfIn PDF document text
    • https://cdn.sqhk.co/nuzitomizaj/WKXpmgj/pandemic_ebt_card_nevada.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4409254/normal_602fb491505f0.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4380229/normal_60031825bca69.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4367304/normal_6000c6607b2b3.pdfIn PDF document text
    • https://cdn.sqhk.co/jumifokujuje/jhjcghm/jefutikekovikamisi.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/nuselufuzo/runanetuxusuvilexe.pdfIn PDF document text
    • https://s3.amazonaws.com/zosevid/free_lined_paper_template_for_first_grade.pdfIn PDF document text
    • http://xuxivobanirug.epizy.com/girl_guide_cookies_canada_online.pdfIn PDF document text
    • http://mukowepefirufeg.epizy.com/hbs_1120_review.pdfIn PDF document text
    • http://mosazozude.epizy.com/sample_closing_costs_sheet.pdfIn PDF document text
    • https://s3.amazonaws.com/teximikamukubo/how_to_deal_with_finals_stress.pdfIn PDF document text
    • https://s3.amazonaws.com/dixaleko/zosemo.pdfIn PDF document text
    • http://gafejufojivu.epizy.com/diferencia_entre_ciencias_formales_y_factuales.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_off0000da55.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDA55 5836 bytes
SHA-256: 6cbbd459986f81e983900470a1ebc745d68a81b49eb9666ea49f66db20004283
font_01_sfnt_off0000ee2e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE2E 10320 bytes
SHA-256: 651f4860632c56dcbbae980059503b4ff59e9612ee49a6b529bd5bf2aa8e2795