Malicious PDF — malware analysis report

Static analysis result for SHA-256 528967367c8b7d0a…

MALICIOUS

PDF

70.6 KB Created: 2021-02-17 07:09:10 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 17546441f2a38ad7efd42b14c312aed3 SHA-1: dd9ab08efe9a6425daaef64caaaad4718b539df0 SHA-256: 528967367c8b7d0a5290114a293c77ad44763f30b11a61c5841c1516d4e21e65
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/wix?keyword=spyderco+slysz+bowie+knife PDF link annotation
    • https://cdn.sqhk.co/folamudoj/YigGiel/go_escape_game_walkthrough_cool_math.pdfIn PDF document text
    • https://cdn.sqhk.co/kekotenonaxu/Cs5a7ja/julozukatejiko.pdfIn PDF document text
    • https://cdn.sqhk.co/gabadifofibo/Hg3jclX/today_show_hosts_current.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4449395/normal_601d881cf156d.pdfIn PDF document text
    • https://cdn.sqhk.co/vesagivara/crto0HT/95172259386.pdfIn PDF document text
    • https://cdn.sqhk.co/kadeposamo/hjjhahk/liwerenuwapikazadovenebop.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4490720/normal_600cf9f6acc86.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4489247/normal_6015b9702d9e3.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/zalomi/benenarepizorob.pdfIn PDF document text
    • https://s3.amazonaws.com/kizugokofo/14154531315.pdfIn PDF document text
    • https://s3.amazonaws.com/zuguvoxoki/75305451602.pdfIn PDF document text
    • https://s3.amazonaws.com/jutenojamega/32971567990.pdfIn PDF document text
    • https://s3.amazonaws.com/jirebonudur/agency_theory_definition.pdfIn PDF document text
    • https://s3.amazonaws.com/bofake/bevepufo.pdfIn PDF document text
    • https://s3.amazonaws.com/jezaxojipevu/nafiromivusudunulesugi.pdfIn PDF document text
    • https://s3.amazonaws.com/godoremitiwuja/vinele.pdfIn PDF document text
    • https://s3.amazonaws.com/juvuraguvutoxif/xanepixorabilun.pdfIn PDF document text
    • https://s3.amazonaws.com/vefagotoje/photo_background_changer_app_free.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_off0000d754.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD754 5492 bytes
SHA-256: 698b721fb946100674d93d5a1c370aa6e2b4929cac8535b780c58ec483ea3a2e
font_01_sfnt_off0000ea3e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA3E 10364 bytes
SHA-256: 2475f792bd13122fdc505e286f6e878f1346a9d8a49666a154ec75fa9cc630d1