Malicious PDF — malware analysis report

Static analysis result for SHA-256 12726bcdf6495138…

MALICIOUS

PDF

72.0 KB Created: 2021-02-25 15:58:24 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 6da2545fe32793172a3e40750afe02ec SHA-1: a6e6eecf0405e6de4c1da345d5f97082fac49528 SHA-256: 12726bcdf64951384d5d0616b38ffb4b712f27ceb485e91091108b4b4da40aa4
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://leonvi.ru/award?keyword=do+the+words+mom+and+dad+need+to+be+capitalized PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4389793/normal_60338ed9b2ff2.pdfIn PDF document text
    • https://cdn.sqhk.co/fuvopone/O9UjbFK/fogalilafemuxika.pdfIn PDF document text
    • http://lomigakorak.getenjoyment.net/31572848247.pdfIn PDF document text
    • https://cdn.sqhk.co/fefowofuk/5Cgfiiy/class_dojo_portfolio_video_for_parents.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4471488/normal_6018140149fe8.pdfIn PDF document text
    • https://cdn.sqhk.co/lituxopevuk/gijd455/hidden_objects_sims_4_plants.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4459027/normal_5ffd0e96d2169.pdfIn PDF document text
    • http://rafupofamurawaf.mygamesonline.org/36146416505.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4501656/normal_60266a9120bf4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4418796/normal_60260bbeefb5c.pdfIn PDF document text
    • http://tapozifokun.mywebcommunity.org/21755949159.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://luvabokinoleg.onlinewebshop.net/who_is_the_best_portrait_painter.pdfIn PDF document text
    • https://s3.amazonaws.com/saziwijaxodav/adder_tv_series.pdfIn PDF document text
    • https://s3.amazonaws.com/zuguvoxoki/oblique_triangle_worksheet.pdfIn PDF document text
    • https://s3.amazonaws.com/lanaladu/vasupulamosizix.pdfIn PDF document text
    • https://s3.amazonaws.com/jojitagifuva/browser_app_for_java.pdfIn PDF document text
    • https://s3.amazonaws.com/pasawe/37131523989.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_off0000dd0f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD0F 5596 bytes
SHA-256: a07064f4cff3ecafffb85a2cf2ae7fcf2dbf533f36b4e67f584dd7cd61b4c102
font_01_sfnt_off0000effd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEFFD 10172 bytes
SHA-256: 76c52987262a3bd22122663a4d5545d93a90a0db5647fe8cabfc6734d8194cd9