Malicious PDF — malware analysis report

Static analysis result for SHA-256 9a427f1911f6f7e6…

MALICIOUS

PDF

67.1 KB Created: 2021-02-25 22:33:32 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 34cbe26c9b2bf6271553a2278cc05c32 SHA-1: 82a00a1651268938c38f559ca2311e65576514ff SHA-256: 9a427f1911f6f7e6401c565992ff5e11bff438f486259554c1f2f8aad73602a9
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://jacksth.ru/wix?keyword=your+pinoy+tambayan+lambingan PDF link annotation
    • http://somenem.iblogger.org/tobifikimetizumibuwiri.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387230/normal_5fd1801187f9d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4386834/normal_5fd61314179d3.pdfIn PDF document text
    • http://helpcontactform.com/lengua_sanscritoewhzm.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4455660/normal_602014746e6ae.pdfIn PDF document text
    • http://samozanyat.info/bekuzojugewunesepx7ri.pdfIn PDF document text
    • http://saudiautoinsurance.com/sefefuzibovedesofumuxh2fra.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413967/normal_6037c9f9059f5.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://verirajoxa.epizy.com/vector_ornament_coreldraw_format.pdfIn PDF document text
    • http://ruxofepugoloma.rf.gd/mk11_krypt_guide_brutalities.pdfIn PDF document text
    • http://wefitoxoke.epizy.com/53546540733.pdfIn PDF document text
    • http://xonelamurojili.rf.gd/coast_guard_female_weight_standards.pdfIn PDF document text
    • http://luwulifinuneti.epizy.com/xazupeja.pdfIn PDF document text
    • https://s3.amazonaws.com/jugobimuraje/sutonasapezuwuje.pdfIn PDF document text
    • https://s3.amazonaws.com/jivuxo/sakir.pdfIn PDF document text
    • http://zemadepa.rf.gd/60741405898.pdfIn PDF document text
    • http://rimojiruseb.rf.gd/poisson_distribution_matlab_sample.pdfIn PDF document text
    • https://s3.amazonaws.com/vixuwogetiv/apartment_building_images_free.pdfIn PDF document text
    • http://fejiremow.epizy.com/bts_memories_of_2018_full.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_off0000cbb1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCBB1 5164 bytes
SHA-256: 83b60dee4028ae84554697c9b9f2714ceb77e1b6aab1a22766769871af2fcf45
font_01_sfnt_off0000dd3a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD3A 9824 bytes
SHA-256: d04e63066a2f3fda929e44739abc64cda648774a7f22f5db261954c73c0be69b