Malicious PDF — malware analysis report

Static analysis result for SHA-256 5b6e47d9e496ec2a…

MALICIOUS

PDF

71.4 KB Created: 2021-02-20 20:50:29 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: fdfc590f971132fd67da30d72f2f3699 SHA-1: f892b4e2d2ff302233e0208b7bec13aa79e9b416 SHA-256: 5b6e47d9e496ec2a877dd8c0f6838cf603e14a0154d6409563241cbecf9b5071
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://yafferge.ru/wb?keyword=how%20to%20set%20time%20on%20casio%20wave%20ceptor%20watch In PDF document text
    • http://hermidkovo.info/wasepelofukwqiaw.pdfIn PDF document text
    • http://danetasasanow.iblogger.org/duxifirelulagur.pdfIn PDF document text
    • http://mimawusavap.iblogger.org/bozusegijasamejuguxo.pdfIn PDF document text
    • http://safagiko.iblogger.org/sasaj.pdfIn PDF document text
    • http://lejugowiwusog.22web.org/jepulimisifofavur.pdfIn PDF document text
    • http://becloud.website/annexure_d_sample_word_format928jf.pdfIn PDF document text
    • http://prolac.ru/jagodoburazunar1bi2q.pdfIn PDF document text
    • http://bupatinewesep.66ghz.com/56654770188.pdfIn PDF document text
    • http://wei-nmvc.com/billed_customers_for_services_performed_transactionqegnc.pdfIn PDF document text
    • http://iuts.space/free_tv_apps_for_ipad_canadaw0u2f.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://vuxotuketut.rf.gd/34157650976.pdfIn PDF document text
    • http://xegukamadoso.epizy.com/89620566446.pdfIn PDF document text
    • http://nuwumexuxesi.epizy.com/87170614733.pdfIn PDF document text
    • http://noxagipuputop.rf.gd/french_conjunctions_worksheets.pdfIn PDF document text
    • http://daxepusiz.rf.gd/blender_2._79_themes.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_off0000da70.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDA70 5252 bytes
SHA-256: bf88e98a86a5c8da1d25907775716a91cf01d633869586c567ce7d2efb254f80
font_01_sfnt_off0000ec36.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC36 10636 bytes
SHA-256: 46bba13e8597d043736b897bf55a556aea9de51190f78f2feb1957c4bfea9310