Malicious PDF — malware analysis report

Static analysis result for SHA-256 604ff385aaf4c803…

MALICIOUS

PDF

72.3 KB Created: 2021-03-02 19:47:37 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 113667d0d1c79c5b68cc167ab6d0c209 SHA-1: c1edfc2bc9f874b65ec606e700061bd935e42de9 SHA-256: 604ff385aaf4c80381de9b083f38f050cf5fea44fc25e977711fd5fb731a3e89
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://druttle.ru/award?keyword=new+free+wordpress+themes+2020 PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4383930/normal_5fe2002e7a63d.pdfIn PDF document text
    • http://tufofol.medianewsonline.com/likapu.pdfIn PDF document text
    • http://kifopelidito.mypressonline.com/what_does_space_mean_in_interior_design.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4470222/normal_602c608950be2.pdfIn PDF document text
    • http://zemegazi.22web.org/apertura_piriformis.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4469374/normal_603485dbbc808.pdfIn PDF document text
    • http://gapuzenum.22web.org/food_adulteration_advantages_and_disadvantages.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4407994/normal_5fe94349bf9db.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4464068/normal_6006b16202351.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4379723/normal_5fc753f145c17.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/ragejufa/hercules_the_legendary_journeys_parents_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/sowewazulejewi/ys_8_shoebill_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/nisiwanolom/wimaluposupamivamexade.pdfIn PDF document text
    • https://s3.amazonaws.com/donake/platform_bed_frame_with_storage_ideas.pdfIn PDF document text
    • http://jabodegodonirad.atwebpages.com/49337446201.pdfIn PDF document text
    • http://vidugozu.atwebpages.com/gagekab.pdfIn PDF document text
    • https://s3.amazonaws.com/gomakobez/technical_report_abstract.pdfIn PDF document text
    • http://moxuwujapuj.rf.gd/asbestos_sheet_roofing_corrugated.pdfIn PDF document text
    • http://xomutojekes.myartsonline.com/jufemipixa.pdfIn PDF document text
    • http://pujekejiwevote.epizy.com/58200566724.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_off0000ded0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDED0 5376 bytes
SHA-256: 6fc1b660a3f39705e8d232d6b8d6d08cbd6f777c7811fdb6b1e3f5dde83cc23b
font_01_sfnt_off0000f113.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF113 10592 bytes
SHA-256: 4ad292cbbcfe1ff3484a36a9d1eb498dfc5c41d4a1a375ceb18e0ac8dc2ac0a7

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