Malicious PDF — malware analysis report

Static analysis result for SHA-256 08444b989302d6b3…

MALICIOUS

PDF

63.3 KB Created: 2021-02-20 09:58:14 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: b6a367e8446d106064548d06609ca773 SHA-1: 731ee1f0cd1d08c75ab93043e28382598de4bb0c SHA-256: 08444b989302d6b36c2c30798eecf13304b28a495c64171de3a04dfcfbc12843
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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/wix?keyword=briggs+and+stratton+675+series+manual PDF link annotation
    • https://cdn.sqhk.co/nuxezitowefi/vicFLjd/5072594825.pdfIn PDF document text
    • https://fuwefepitebu.weebly.com/uploads/1/3/4/7/134709748/7e1187cd25277.pdfIn PDF document text
    • https://cdn.sqhk.co/pijujuweg/a1ih5VB/tomevosabo.pdfIn PDF document text
    • https://bewokeramubi.weebly.com/uploads/1/3/1/6/131636949/2024781.pdfIn PDF document text
    • http://idealica-ituficiale.website/69299358385v5tpw.pdfIn PDF document text
    • https://cdn.sqhk.co/jirudumom/Cc6ujfg/50533507888.pdfIn PDF document text
    • http://fridgeservice.ru/para_que_sirve_un_portafolioue42n.pdfIn PDF document text
    • https://dezegumi.weebly.com/uploads/1/3/4/1/134108828/lixedutoj.pdfIn PDF document text
    • http://instasale.company/976151715856yz4d.pdfIn PDF document text
    • https://remavugotidub.weebly.com/uploads/1/3/5/9/135962193/tufoxitalubex.pdfIn PDF document text
    • http://successinyourlif.website/89209457571vnl3p.pdfIn PDF document text
    • http://copyrightsafetyhelps.com/gevifurefuxuxekon5dfr.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/livivuvuwugeb/46810490467.pdfIn PDF document text
    • https://s3.amazonaws.com/wewuxuviwar/cv_format_for_teacher_in_bangladesh.pdfIn PDF document text
    • https://s3.amazonaws.com/rutufokedizon/lagu_aliff_aziz_kalau_cinta.pdfIn PDF document text
    • https://s3.amazonaws.com/waxapoz/16995741465.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_off0000ba39.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBA39 5552 bytes
SHA-256: a0d2a1855870054be42a4cc2b29bb71f7b4155e2233a288bb54c7157225f4931
font_01_sfnt_off0000cd0d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCD0D 10396 bytes
SHA-256: f6709748b30e9cd28334c187fd3458ae960a5d21eee26676bfbb072da38a85cf

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