Malicious PDF — malware analysis report

Static analysis result for SHA-256 c6a29835df36239f…

MALICIOUS

PDF

72.4 KB Created: 2021-02-13 03:50:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 4c43ec418d9574e8c9411f5eed5ed841 SHA-1: 524bbd0b6dcad60d2e991b0a0855feb4dc26272b SHA-256: c6a29835df36239fd53bbb9a22ba92ad0d01179c4e966796a925cb193a21eb65
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://jacksth.ru/wix?keyword=sistema+educativo+nacional+certificado+de+secundaria PDF link annotation
    • http://a1metromovers.com/bias_fx_2_freela1ky.pdfIn PDF document text
    • http://vuxiparami.22web.org/anime_apk_apps.pdfIn PDF document text
    • http://vazupuvid.iblogger.org/code_formatter_php_html.pdfIn PDF document text
    • http://igme.site/pevaromuylu5b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383471/normal_5fd82a1b3c518.pdfIn PDF document text
    • http://radanews.site/project_management_risk_assessment_matrix_templateyws24.pdfIn PDF document text
    • http://normal-id.com/mebutoxabuxenuninuj4l91o.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/dukajevo/ascendant_2017_free.pdfIn PDF document text
    • https://s3.amazonaws.com/lurutopobi/59958903670.pdfIn PDF document text
    • https://s3.amazonaws.com/jadere/course_planning_template_excel.pdfIn PDF document text
    • https://s3.amazonaws.com/rurosaveruk/common_noun_and_proper_noun_examples.pdfIn PDF document text
    • http://botasalipigu.epizy.com/63521279193.pdfIn PDF document text
    • https://s3.amazonaws.com/jevopemosod/linear_time_euclidean_distance_transform_algorithms.pdfIn PDF document text
    • http://numifugok.rf.gd/20777688092.pdfIn PDF document text
    • http://zilajib.epizy.com/fuporuberakifawi.pdfIn PDF document text
    • https://s3.amazonaws.com/zarusegibitumet/compliance_full_movie_free.pdfIn PDF document text
    • https://s3.amazonaws.com/midaguvimabof/bibliography_apa_format_many_authors.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_off0000da78.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDA78 5328 bytes
SHA-256: ad3908a62f8eb225af04c65b615de9b0371c30b36692e1db820a8b392cf0f4b0
font_01_sfnt_off0000ec86.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC86 11604 bytes
SHA-256: 0b43f84ca8679b883043f42dd6d137fcb6f46b4ad6b7b1f7a087d6d31208b9a9