Malicious PDF — malware analysis report

Static analysis result for SHA-256 d1085c94d35830ea…

MALICIOUS

PDF

67.4 KB Created: 2021-02-07 13:11:05 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 4bb73b16626dcafe712b64640af63f0e SHA-1: 1b3cdf49e1d9ccfb1a81f3ac8d5abcc0da78170c SHA-256: d1085c94d35830ea9b521775c3cc674eacc077948e0588ff7425256abb5dd328
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://seumenha.ru/aws?utm_term=brother+scanner+software+free++mfc-+7340 PDF link annotation
    • http://naropiwazufilu.22web.org/93613188940.pdfIn PDF document text
    • http://5gusevshop.space/cycle_de_rankine_exercice_corrig_pd14uld.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413566/normal_600c3cc1e8cea.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4484107/normal_5febbee01a811.pdfIn PDF document text
    • http://sportita.fun/myanmar_grade_10_chemistry_textbookjvaaj.pdfIn PDF document text
    • http://tovelksa.website/57891530985bbvww.pdfIn PDF document text
    • http://insuranceautousa.com/83253034886hoawl.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4409243/normal_5ff8831886165.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4374533/normal_5fccc782b5280.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/kevava/92628855477.pdfIn PDF document text
    • https://s3.amazonaws.com/jawusawar/ludikewufegogekasadelunus.pdfIn PDF document text
    • https://s3.amazonaws.com/jezaxojipevu/anaconda_windows_python_3._6.pdfIn PDF document text
    • http://vezoxonu.epizy.com/70117188071.pdfIn PDF document text
    • http://foxokaxej.epizy.com/56483232437.pdfIn PDF document text
    • http://tozoxuzev.epizy.com/angadi_theru_padam.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_off0000c7da.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC7DA 5736 bytes
SHA-256: 525f348552b9a52d2caffbfcca54dfae9e5f03fdbd71b50871ff88c000013fae
font_01_sfnt_off0000db5d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB5D 10944 bytes
SHA-256: 6c03b7e5959fd250bb901f74af1aba19729ab6478f8e5dfcdb896c7fac2915a6