Malicious PDF — malware analysis report

Static analysis result for SHA-256 7b3ff7227e958401…

MALICIOUS

PDF

72.6 KB Created: 2021-02-14 11:21:13 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 4771c1a2744920c54d516568ed91cde6 SHA-1: cef9ff51ece85445b5c2b29211a2fd44cfd8ce1c SHA-256: 7b3ff7227e9584011eabb98a4382fe836c0c2564804f580eb59eb3b5bb86c978
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://seumenha.ru/wix?keyword=bonavita+classic+crib+instructions PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4466680/normal_601981790cab3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408711/normal_601fb49d31d21.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4481663/normal_600d6f2e9a923.pdfIn PDF document text
    • http://arevakar-travel.com/behold_the_dreamers_themes0q5dm.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4488339/normal_5fef35adbfe22.pdfIn PDF document text
    • https://cdn.sqhk.co/zalogifewoje/dijjiik/55194799661.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/tisegovofu/38310097407.pdfIn PDF document text
    • https://s3.amazonaws.com/metubevozisul/periodic_table_elements_printable.pdfIn PDF document text
    • https://s3.amazonaws.com/vizegemawokaxe/visuo_drone_xs809w_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/xazarujokemus/mewukebabakulu.pdfIn PDF document text
    • http://zoweratizid.epizy.com/36924740762.pdfIn PDF document text
    • https://s3.amazonaws.com/webipejonavuv/kolkata_google_map.pdfIn PDF document text
    • https://s3.amazonaws.com/mejados/texoxuminokepof.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_off0000d8c6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD8C6 5040 bytes
SHA-256: 8952a899d0e2481cbf3b73b15c30de7a4c57817a87b5b3fb22deeca7da2d67f8
font_01_sfnt_off0000e9fe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE9FE 13972 bytes
SHA-256: 9cd308c9182a4b79e2ab9bb820b377556ab7c4c316e2a1429ed60c24487ed132