Malicious PDF — malware analysis report

Static analysis result for SHA-256 92f9f895046b938f…

MALICIOUS

PDF

63.7 KB Created: 2021-01-22 08:25:36 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: c615b1ece473b2b8e7ac8e4e6f44c6e7 SHA-1: 8c4c89a7fde8c527f4d611c51f7650162f09c3ac SHA-256: 92f9f895046b938f176d285e5e1b9820891bfb5813f7f07990f00eede4ac8684
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/123?utm_term=guitar+hero+ps3+bundle PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4496170/normal_5ff7b9b3cc1ca.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4375696/normal_5fef38e75539a.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4459328/normal_5fe395dc4b19c.pdfIn PDF document text
    • https://cdn.sqhk.co/xufatirumina/hef24ie/limisunogarovarurexopi.pdfIn PDF document text
    • https://cdn.sqhk.co/wifukatar/dTpqIii/35329176721.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4493600/normal_5fe8879570e84.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4417824/normal_5fe5e15432383.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4481173/normal_5fe36551d0b7d.pdfIn PDF document text
    • https://cdn.sqhk.co/jomububorava/ejczgiF/xefikujoworiv.pdfIn PDF document text
    • https://cdn.sqhk.co/retirijozi/gejjAig/74976830198.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://sejofedavija.epizy.com/15396295856.pdfIn PDF document text
    • https://s3.amazonaws.com/nowokil/tovarokutewaz.pdfIn PDF document text
    • https://s3.amazonaws.com/jirebonudur/study_island_answers_key.pdfIn PDF document text
    • https://s3.amazonaws.com/sixolose/89888373200.pdfIn PDF document text
    • https://s3.amazonaws.com/dixaleko/91510433840.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_off0000bba7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBBA7 5380 bytes
SHA-256: 11af3370a46fcd42ca9d216348228bf592ef1130a840e21a379d1a718c98aa3a
font_01_sfnt_off0000cde0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCDE0 10652 bytes
SHA-256: c37eaeda1d47ca6882e42d6a59c166954dd1f9462bc143e5b7d272cd1d3d61d5