Malicious PDF — malware analysis report

Static analysis result for SHA-256 fb2645e3ea38f283…

MALICIOUS

PDF

68.5 KB Created: 2021-02-20 03:47:18 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: f2cbcf17b14568d81cc72a9a6d97451d SHA-1: a7f0e8a57d73b66d0a4509e9ac178d878e1c5f0c SHA-256: fb2645e3ea38f28377f0c8f4d14fc100701f13444d3c3581b224ba357885779d
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://druttle.ru/wb?keyword=does%20a%20state%20of%20emergency%20suspend%20the%20constitution PDF link annotation
    • https://cdn.sqhk.co/totafeta/f7hg8wU/xenerewodetusa.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4420604/normal_6015da1670420.pdfIn PDF document text
    • https://cdn.sqhk.co/neratimo/jiIJv9X/vaxidak.pdfIn PDF document text
    • http://s-tochka.ru/wobiperazipovotosemav81s4.pdfIn PDF document text
    • http://natgood.space/husqvarna_262xp_service_manual2qykp.pdfIn PDF document text
    • https://cdn.sqhk.co/kunutewiwit/rie9jaw/make_a_list_in_apple_notes.pdfIn PDF document text
    • http://freshremont.com/law_firm_website_design_templatesh50he.pdfIn PDF document text
    • https://cdn.sqhk.co/puwetudul/jjfibij/vebelafakex.pdfIn PDF document text
    • https://cdn.sqhk.co/xobanozizesa/iBgihig/homeschooling_in_pakistan.pdfIn PDF document text
    • https://cdn.sqhk.co/tamoravuwera/ZoEhiig/counter_terrorism_units_uk.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/bulozor/mindtap_answers_macroeconomics_chapter_3.pdfIn PDF document text
    • https://s3.amazonaws.com/gotitibekovi/apache_camel_source.pdfIn PDF document text
    • https://s3.amazonaws.com/gewuwasi/7911115193.pdfIn PDF document text
    • https://s3.amazonaws.com/muvevanepen/gisurovab.pdfIn PDF document text
    • https://s3.amazonaws.com/tubupejevomo/manualidades_con_papel_de_seda.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_off0000cd45.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCD45 5636 bytes
SHA-256: 1eb7a356eac4a72b68ea4986f7c6d86efe03082217bebd04d23285043cc63ed1
font_01_sfnt_off0000e05e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE05E 10664 bytes
SHA-256: f5bbf68de71d2501bd964baf8b0e3f82d5a0eeb9b4efb7700e320a21b689c31c