Malicious PDF — malware analysis report

Static analysis result for SHA-256 2b35b3482b03abb2…

MALICIOUS

PDF

71.7 KB Created: 2021-02-27 19:45:46 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: cf37fd5778c20e3e504a381f2e461ee8 SHA-1: 08ec1e49e6a46238dd14e6d1a4e6fc1170f49d46 SHA-256: 2b35b3482b03abb2b54016b6e688b0f50a48df4fe3d852568ec18da16ddac3ab
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/award?keyword=samsung+tv+remote+programming PDF link annotation
    • http://mixutadumekaje.mypressonline.com/ariens_lawn_mower_engine_parts.pdfIn PDF document text
    • https://cdn.sqhk.co/jowowibow/Q1hiG4K/endless_runner_unity_3d.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4501029/normal_600282819998e.pdfIn PDF document text
    • http://tosefabebiribow.scienceontheweb.net/fawugidiwuvofodajuvu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4475392/normal_60185d6f77302.pdfIn PDF document text
    • https://cdn.sqhk.co/xeduwukaxusa/iMiigf9/72286873048.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4478378/normal_60240d161f625.pdfIn PDF document text
    • https://cdn.sqhk.co/lebapivi/9hiaBoD/nupodutipeja.pdfIn PDF document text
    • http://gojavodevagajuw.mygamesonline.org/how_to_connect_hp_printer_to_wireless_network_on_mac.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/mulerux/cara_bikin_kuesioner_google_form.pdfIn PDF document text
    • https://s3.amazonaws.com/likerajatob/strategic_change_management_process.pdfIn PDF document text
    • https://s3.amazonaws.com/neporezofov/29103015747.pdfIn PDF document text
    • http://gosaduzunake.myartsonline.com/najadavatesiguzo.pdfIn PDF document text
    • https://s3.amazonaws.com/fowikorejodi/xatikupefesedak.pdfIn PDF document text
    • https://s3.amazonaws.com/goviwigax/numomitasar.pdfIn PDF document text
    • https://s3.amazonaws.com/mizeteb/badnaamiyan_mili_female_version_song.pdfIn PDF document text
    • https://s3.amazonaws.com/nutanigonu/which_washing_machines_have_lint_filters.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_off0000dd84.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD84 5268 bytes
SHA-256: 8f19cf0c06a87b88d54910198f8e77ee9e17c6a76e958c3a8790f900a6534d38
font_01_sfnt_off0000ef62.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF62 9936 bytes
SHA-256: fe12d7b928c1970a9bd953eb2b3594a3b490370b393d3b0912cb5e6bc3ccc53b