Malicious PDF — malware analysis report

Static analysis result for SHA-256 8be2b3bbce44b988…

MALICIOUS

PDF

70.4 KB Created: 2021-02-12 08:09:02 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 5157a81509e0818bde89a79bfe5c3624 SHA-1: 64220abbce6a6ebb82a2b885d0561dc14e4a69b9 SHA-256: 8be2b3bbce44b988195371463f51bb13adaac8d6bc084f5061faab5ec17e61a7
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://jottigo.ru/wb?keyword=corpus%20linguistics%20for%20vocabulary%20pdf PDF link annotation
    • http://vabakavolageni.22web.org/67951715788.pdfIn PDF document text
    • http://lishop.site/taurus_man_secrets_read_onlinew4mse.pdfIn PDF document text
    • http://sofebitaxed.iblogger.org/data_warehouse_testing_questions_and_answers.pdfIn PDF document text
    • http://moshon.space/7539106125177qkk.pdfIn PDF document text
    • http://runolive.com/login_page_html_templatemnj3u.pdfIn PDF document text
    • http://bathforlegs.xyz/tofirabevivebunavulibebd5hfi.pdfIn PDF document text
    • http://kefitetapirep.22web.org/nukesokazujogabiva.pdfIn PDF document text
    • http://ca-management.website/bjp_advertisement_video_2019f4e6j.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://mutifitiwexo.epizy.com/42571763358.pdfIn PDF document text
    • http://lebozid.epizy.com/crazy_in_love.pdfIn PDF document text
    • http://mixipazotan.epizy.com/tamilrockers_kannada_tagaru_movie.pdfIn PDF document text
    • http://najudugofuk.rf.gd/skoda_amundsen_manual_2014.pdfIn PDF document text
    • https://s3.amazonaws.com/zetituri/gantt_chart_excel_template_xls_free.pdfIn PDF document text
    • https://s3.amazonaws.com/vuxalirudidel/60116647263.pdfIn PDF document text
    • https://s3.amazonaws.com/fumiposamisur/79296186793.pdfIn PDF document text
    • https://s3.amazonaws.com/zesixefe/pewesosefiwazemomafo.pdfIn PDF document text
    • https://s3.amazonaws.com/gulapore/dead_space_3_coop.pdfIn PDF document text
    • http://dikuwipesunebo.rf.gd/93976732387.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_off0000d35d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD35D 5528 bytes
SHA-256: 6fc8c34b797105bf89901ff981c6b995291f7c96ce928ba6a860b75938cc54a8
font_01_sfnt_off0000e63d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE63D 11336 bytes
SHA-256: 94958422db4b652e47536e13682dd5a85c077322020fc1d629afbf0faf131673