Malicious PDF — malware analysis report

Static analysis result for SHA-256 6b7ac24dc1d9086a…

MALICIOUS

PDF

72.8 KB Created: 2021-02-28 04:17:42 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: e53582c7d02b3d6efc6813528d5162a3 SHA-1: 082031e0c10f96898440d9c9f1b51f2718c56066 SHA-256: 6b7ac24dc1d9086af89e0201c86f773afd4ac501e60f9f56e452bf109f816f6f
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://jottigo.ru/award?keyword=is+cyberpunk+60fps+on+ps5 PDF link annotation
    • https://cdn.sqhk.co/pezolaje/mzJ5Chg/2d_character_creator_software_free.pdfIn PDF document text
    • https://tizizuner.weebly.com/uploads/1/3/1/8/131872037/5870754.pdfIn PDF document text
    • https://mowuvesetotodoj.weebly.com/uploads/1/3/0/9/130969800/5fe3c06121efddb.pdfIn PDF document text
    • http://junelizirigoroj.iblogger.org/the_daniel_prayer_dvd.pdfIn PDF document text
    • http://paxawujaxoda.22web.org/teridelomuvolifet.pdfIn PDF document text
    • https://zakutawevuvukug.weebly.com/uploads/1/3/5/9/135970657/xobefikijomulofo.pdfIn PDF document text
    • https://cdn.sqhk.co/wanevakaxuma/7jemIjh/dijibalekelasama.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://jefiwimagi.epizy.com/26534765589.pdfIn PDF document text
    • http://wuzuferopo.epizy.com/neinstein_adolescent_health_care_a_practical_guide.pdfIn PDF document text
    • http://zowonotetejubi.rf.gd/object_oriented_programming_java.pdfIn PDF document text
    • http://rafesule.rf.gd/duzinefidukodolow.pdfIn PDF document text
    • https://s3.amazonaws.com/wukara/chirodini_tumi_je_amar_movie.pdfIn PDF document text
    • http://vekoxoke.epizy.com/xomuturumufegaziset.pdfIn PDF document text
    • https://s3.amazonaws.com/rubidokezive/free_budget_planner_template_australia.pdfIn PDF document text
    • https://s3.amazonaws.com/bakoloj/dikarija.pdfIn PDF document text
    • https://s3.amazonaws.com/zodererezuzuxi/gorixivekax.pdfIn PDF document text
    • https://s3.amazonaws.com/fosalizuzu/54205605211.pdfIn PDF document text
    • https://s3.amazonaws.com/woneketelak/driving_license_test_questions_and_answers.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_off0000e02f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE02F 5428 bytes
SHA-256: 4f0a0f2e6b46ef8b9c8ff4446e092c0a8e70ee651980cb27433e8900029e1433
font_01_sfnt_off0000f2cd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF2CD 10368 bytes
SHA-256: f4ceaac59b47105aa40eb90182e8028f961547b1cff123164b53cbe376d023f1

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