Malicious PDF — malware analysis report

Static analysis result for SHA-256 cf60d47fd6dac18f…

MALICIOUS

PDF

67.8 KB Created: 2021-03-01 07:29:37 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 0a26632808d602bc40c1d096baa40076 SHA-1: 05f05cc635e6bf47caec9bb9b476dca71337ca58 SHA-256: cf60d47fd6dac18fdbe8c3fed0af207e1ce204c029cfe5888c0780fc0a4861f7
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 6

  • 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 contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://jumiwimov.ru/wix?keyword=12+rcp+pipe+thickness PDF link annotation
    • https://cdn.sqhk.co/badaxiloru/iejdJnq/bozafavilir.pdfIn PDF document text
    • https://rixemovupel.weebly.com/uploads/1/3/1/6/131606965/biraxegijalutezubo.pdfIn PDF document text
    • https://vaxetilunakado.weebly.com/uploads/1/3/4/0/134012354/kefizinabowitatuwuwi.pdfIn PDF document text
    • http://jivusibofonefud.mygamesonline.org/vugapubenuvarasejugagekif.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4484399/normal_5ff620bdcca2d.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4388271/normal_5ffb7ab2d1101.pdfIn PDF document text
    • https://wolunogejafijut.weebly.com/uploads/1/3/4/6/134649672/zivowuzepirifa.pdfIn PDF document text
    • https://pavufunipuz.weebly.com/uploads/1/3/4/2/134265556/4830227.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369671/normal_6028ac6b5e437.pdfIn PDF document text
    • https://pelazokud.weebly.com/uploads/1/3/0/7/130775509/4488939.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4421205/normal_6002d6c8182d7.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://dopovis.myartsonline.com/31742304534.pdfIn PDF document text
    • http://xuvekixofeku.onlinewebshop.net/what_is_credit_memo_post.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_off0000cf16.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCF16 4932 bytes
SHA-256: ad32f0121fd0a2906e9ea89cf31c47f9431e9ce4ae52f502ad58af548615b856
font_01_sfnt_off0000dfde.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDFDE 10288 bytes
SHA-256: 477bd8e9030ddc52149d30b55ec5ef467a6679171f676a6f3e04d82ff14f8a9f