Malicious PDF — malware analysis report

Static analysis result for SHA-256 b66e6d7f75f5b24c…

MALICIOUS

PDF

72.7 KB Created: 2021-02-24 10:33:28 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 58ee47f520f7dfa58e8c89232949b965 SHA-1: 3097a22ab5488cd06ca4cfefdf2632b74c0d9bc6 SHA-256: b66e6d7f75f5b24c0f039ce3d09487f17198dd5253a276c036d7ccc2d69419e3
194 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
  • 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.
  • 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.
  • 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/wix?keyword=outils+linguistiques+translate In PDF document text
    • https://cdn-cms.f-static.net/uploads/4379387/normal_6025fad828c8c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4392871/normal_60206f829a9d2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4464542/normal_601eda45b63f6.pdfIn PDF document text
    • http://zukiguwonizeka.22web.org/nusinex.pdfIn PDF document text
    • http://tefituguj.iblogger.org/lekadumijegokegog.pdfIn PDF document text
    • http://palejep.22web.org/obd_diagnostic_interface_software.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/fibesezati/kilefanisubapuguzijegow.pdfIn PDF document text
    • https://s3.amazonaws.com/xojafemori/voltage_divider_calculator_free.pdfIn PDF document text
    • http://lebasadalo.epizy.com/kizepigulekerimixaduwe.pdfIn PDF document text
    • http://bidadaweba.epizy.com/dofe_skills_assessors_report_silver.pdfIn PDF document text
    • http://vazefetapo.rf.gd/10687513097.pdfIn PDF document text
    • http://sesisat.epizy.com/3883960802.pdfIn PDF document text
    • https://s3.amazonaws.com/gumagabu/roswell_ga_police_incident_report.pdfIn PDF document text
    • https://s3.amazonaws.com/wibedubosateg/bensoul_favourite_song_video.pdfIn PDF document text
    • http://juwozevukiri.rf.gd/8795855941.pdfIn PDF document text
    • http://kagimotazife.epizy.com/nazevosiwipeviwo.pdfIn PDF document text
    • https://s3.amazonaws.com/jefobexapulow/autocad_plant_3d_2018.pdfIn PDF document text
    • https://s3.amazonaws.com/pibajuwi/27989908806.pdfIn PDF document text
    • http://pirarotuweze.rf.gd/lion_air_737_max_crash_preliminary_report.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_off0000df1a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF1A 5008 bytes
SHA-256: 03c61aace08ab5c1ba318ea181db391fb2c22d77bd094625673c7ed8d0e30a6a
font_01_sfnt_off0000f02d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF02D 11856 bytes
SHA-256: c17eb837669a586ee1c862b013d84969fe747a5f47e2e966d62bc2eebd57662d