Malicious PDF — malware analysis report

Static analysis result for SHA-256 783f1fb9ab8172d1…

MALICIOUS

PDF

87.4 KB Created: 2021-02-18 16:41:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: e7b3077669c706ebb8d3a06bc30634b5 SHA-1: da4309bb630666e6dd5e11535cd0144ad79fd07c SHA-256: 783f1fb9ab8172d1b0a0f7c6584756779e14d6f8541950ac132c7d0f9beac415
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://leonvi.ru/123?utm_term=is+a+tesla+worth+it+uk PDF link annotation
    • http://shoop-fo.ru/rhododendron_arboreumo98y9.pdfIn PDF document text
    • https://cdn.sqhk.co/miraroki/jhLVhhk/bolinugisexinis.pdfIn PDF document text
    • http://bapaweki.22web.org/58012747303.pdfIn PDF document text
    • http://all-system7.club/5_year_plan_template_powerpointpcdya.pdfIn PDF document text
    • http://torchland.xyz/oscilloscope_hantek_6022bebu8zh.pdfIn PDF document text
    • http://ig-copyrightnoticehelp.com/nbme_psychiatry_form_1gso5v.pdfIn PDF document text
    • https://cdn.sqhk.co/jenetuwuda/gbshcD4/jujezilumomoxobuminovi.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://rexawisoza.epizy.com/wipalurufifodesosajidu.pdfIn PDF document text
    • http://vakakumiwizexoj.epizy.com/minstrel_boy_sheet_music_bagpipes.pdfIn PDF document text
    • https://s3.amazonaws.com/magapeguwabe/becket_sheet_bend_knot.pdfIn PDF document text
    • http://koburolamugalo.rf.gd/telifonalanulijoxem.pdfIn PDF document text
    • http://vovajixavago.epizy.com/avast_free_antivirus_software.pdfIn PDF document text
    • https://s3.amazonaws.com/suximawo/paradise_lost_as_an_epic_poem.pdfIn PDF document text
    • http://jowatazurusu.epizy.com/xudupuj.pdfIn PDF document text
    • http://biguvuxurezuto.epizy.com/crosswords_with_friends_answers_6_12_18.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_off000119bc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x119BC 4864 bytes
SHA-256: 2d1c86909a83218d952ded5b5bad0999bc18524506fb46d218ff5510ba2f8c09
font_01_sfnt_off00012a52.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12A52 11800 bytes
SHA-256: 8a0495225e94de413dbadf70b4a8cfb006a3825d23be98b95ddb513bcb762286