Malicious PDF — malware analysis report

Static analysis result for SHA-256 4d00277bb4b7b24f…

MALICIOUS

PDF

70.5 KB Created: 2021-02-12 17:08:59 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: ec688e0f8d7853d46d3d11a3ae121167 SHA-1: e63ced5cdca7e37acc18905fcded1df03508706a SHA-256: 4d00277bb4b7b24f960e41ac7f7fa7b776070702eedf9354c514b341ef2946b2
184 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://crophysi.ru/wix?keyword=warrant+search+st+lucie+county+fl In PDF document text
    • https://static.s123-cdn-static.com/uploads/4450338/normal_5fdd23f703986.pdfIn PDF document text
    • https://cdn.sqhk.co/bivuwusim/ggghOo0/gubofinenoriwemit.pdfIn PDF document text
    • https://cdn.sqhk.co/wubunepan/ijchdha/8583656700.pdfIn PDF document text
    • https://cdn.sqhk.co/detaludolef/gwayyhi/rock_climbing_gym_scottsdale_az.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4458132/normal_601e1a603fb13.pdfIn PDF document text
    • http://generalmassage.online/mukokilexitadaravutju44.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4468530/normal_5fe735d74db56.pdfIn PDF document text
    • http://luminar2-download.xyz/kenotozozeguduvarajakhgrt5.pdfIn PDF document text
    • https://cdn.sqhk.co/nifodotiriru/eMhiijf/tarot_cards_names_jojo.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4488137/normal_6005a0c89da02.pdfIn PDF document text
    • https://cdn.sqhk.co/sowumavag/jieij5G/gozud.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4368230/normal_60010b657b8aa.pdfIn PDF document text
    • https://cdn.sqhk.co/gobuwovuv/DNdOIia/boots_egg_and_cress_sandwich.pdfIn PDF document text
    • http://ibkreactiva2020.com/jaspersoft_ireport_designer_tutorial4nlrr.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/kexamoxusinixu/17305848028.pdfIn PDF document text
    • http://pesafitibum.epizy.com/waverley_school_sixth_form.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_off0000d71d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD71D 5084 bytes
SHA-256: 7052d23a3584d7071095987b88bf1c4ac4f223457d44e20c9b7bec32ed368136
font_01_sfnt_off0000e879.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE879 10756 bytes
SHA-256: 2fbbc33e399b7ebb21198c78e6772078f7d25e6e0b6daf53757219a722ebce84