Malicious PDF — malware analysis report

Static analysis result for SHA-256 8d086b7820f855f9…

MALICIOUS

PDF

71.1 KB Created: 2021-02-24 07:32:30 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: cd846ca62a1d96919724d71f55792118 SHA-1: 70fab65c0cca51b3b72363124af20119d4edd6d1 SHA-256: 8d086b7820f855f967f1290abdeb15161f7eb9155e04fd838e3665e1e5f36fa2
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/aws?utm_term=peripheral+route+of+persuasion PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4450243/normal_602d73ef48d92.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4443576/normal_60240fed5a1bb.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4369491/normal_5fceb0187e72b.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4501996/normal_5fdf00a6889f5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4402488/normal_5fda813047e8a.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4477156/normal_5fff7aa49e679.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4380530/normal_5ff6c45890f79.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4482617/normal_5fcf7a7aea97a.pdfIn PDF document text
    • https://cdn.sqhk.co/tovipovo/OheZsjd/jimafamadofumixajutawobu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383138/normal_6030e2ccd667c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4391302/normal_5fd8e9173d690.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4391899/normal_5ff9dd4f9465d.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4489035/normal_6007609d7ac4f.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4368976/normal_5fe0ef3a51da5.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://rekitajutori.rf.gd/bhojpuri_song_dj_remix_pagalworld.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_off0000d9a6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD9A6 4988 bytes
SHA-256: 2e1420599ba8779ed8f78e8cda8196b4da0a0741383d450cc76ad081c9f1e944
font_01_sfnt_off0000ea96.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA96 10808 bytes
SHA-256: e59d25dc5fbce92726b17e778de6d5aa04563a3d526e8ce940b0aa40c8ee4268