Malicious PDF — malware analysis report

Static analysis result for SHA-256 a195e79637d2f12f…

MALICIOUS

PDF

66.2 KB Created: 2021-02-27 11:55:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: c7a9f8ed94b583fbd663156ce385eb4b SHA-1: df7e5e3986edfa321f1c575ea5e57dc5039939f9 SHA-256: a195e79637d2f12f60df3411b867d9e701c5e6df6d9bb341b19ed420b7f34742
136 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
  • 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://baarspo.ru/aws?utm_term=an+enemy+called+average+by+john+mason PDF link annotation
    • http://kukuginori.22web.org/pandoc_html_to_table.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4420911/normal_5fdaf239dc031.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388165/normal_60260776ecee9.pdfIn PDF document text
    • http://nelitip.22web.org/lozitejutugopemol.pdfIn PDF document text
    • http://kadabafomelu.66ghz.com/contract_agreement_format_word.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4503987/normal_5ff0d4ebab25e.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4470405/normal_5fce4f825941f.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4501214/normal_600034ffd71a8.pdfIn PDF document text
    • http://kopirugi.iblogger.org/code_de_la_route_autres_usagers.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/tozaduliwubega/woxowaxe.pdfIn PDF document text
    • https://s3.amazonaws.com/dumupa/noxexebi.pdfIn PDF document text
    • https://s3.amazonaws.com/bewibiwat/english_b1_textbook.pdfIn PDF document text
    • http://xikexugisomap.rf.gd/14183636483.pdfIn PDF document text
    • https://s3.amazonaws.com/fefurorobumi/ecological_succession_worksheet_high_school.pdfIn PDF document text
    • http://nonavijewiw.epizy.com/uzreport_futbol_tv_dasturlari.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_off0000c6fc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC6FC 5720 bytes
SHA-256: 2383d45fe55d91a043ef6a76602af6d7e123a905e3d7d4f9ac5dd95d828dccce
font_01_sfnt_off0000da53.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDA53 9812 bytes
SHA-256: 5631946b9a2f19f256332100b1f99870aec0b7fa3c46a24c6f08bda85f102621