Malicious PDF — malware analysis report

Static analysis result for SHA-256 c7c33b73e0fedcc1…

MALICIOUS

PDF

69.9 KB Created: 2021-02-13 02:03:19 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 2ce24bc607f7e1110acd7f7a3502bdf5 SHA-1: be0e7f0d19cfd267652606df5cd380108c0a7ae4 SHA-256: c7c33b73e0fedcc11cb8bc2642b32f3920c45421c384a145d5b34d43b98d4c03
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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://jottigo.ru/aws?utm_term=don%2527+t+and+doesn%2527+t+worksheet PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4417222/normal_5ffb4d2bbd849.pdfIn PDF document text
    • https://cdn.sqhk.co/wimiwupo/icGjbjf/avis_spain_additional_driver_spouse.pdfIn PDF document text
    • https://cdn.sqhk.co/tororukiwuri/giTiigh/fovedi.pdfIn PDF document text
    • http://lozavisimas.22web.org/project_business_case_template._doc.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4403684/normal_5fee87ca7116a.pdfIn PDF document text
    • https://cdn.sqhk.co/jijasitov/ejejfhc/23017341271.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4478402/normal_5fece5d0529dc.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4424630/normal_5ff83377ca40f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4447460/normal_5fe729552a859.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/vavejijitatofu/arangodb_java_driver.pdfIn PDF document text
    • http://waminakukivexo.rf.gd/nolibofevapalolaguxageret.pdfIn PDF document text
    • http://fikexole.rf.gd/hypothetical_syllogism_examples.pdfIn PDF document text
    • http://wekikoki.rf.gd/medical_certificate_format_for_leave_of_absence.pdfIn PDF document text
    • https://s3.amazonaws.com/dukexajuj/bise_kohat_duty_proforma.pdfIn PDF document text
    • http://wevikokuzufos.epizy.com/70911338794.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_off0000d64e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD64E 5072 bytes
SHA-256: 9954478d381fe3e9e93846ad520bf69696c9fdb80fac8c8678b384732b15ac99
font_01_sfnt_off0000e7a8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE7A8 10308 bytes
SHA-256: d145587ca622aa086847ac37adaf98fbedae9649b69d58328cab3fa3814734cd