Malicious PDF — malware analysis report

Static analysis result for SHA-256 2876216197692b26…

MALICIOUS

PDF

67.0 KB Created: 2021-02-13 22:12:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 281d496cde6b52d9dab4a57b36c9b0cd SHA-1: 17c9e4ebe2870847eae42332f95d9a100a4bbd8f SHA-256: 2876216197692b2626397fb358c532413aa694103f69b9f137c6965b797a3480
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://jacksth.ru/aws?utm_term=access+database+2007+tutorial+pdf PDF link annotation
    • https://s3.amazonaws.com/xisefowu/16668339379.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4485301/normal_60167b987529d.pdfIn PDF document text
    • http://ueuniti.website/743231430618iqzl.pdfIn PDF document text
    • https://s3.amazonaws.com/rijaliwiguvex/fujirivi.pdfIn PDF document text
    • http://zurabutodiriwa.22web.org/definition_of_oral_communication_skills.pdfIn PDF document text
    • http://visionnew.xyz/disney_app_download_windowsbs28u.pdfIn PDF document text
    • http://poradoit2.site/convert_action_file_tosup0s.pdfIn PDF document text
    • https://s3.amazonaws.com/zikeko/mabegosekikuli.pdfIn PDF document text
    • https://s3.amazonaws.com/ragejufa/tubiva.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4414849/normal_5fd69e4b4538b.pdfIn PDF document text
    • https://s3.amazonaws.com/dedinavesute/25737687487.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://xovipofeguz.epizy.com/branding_iron_font.pdfIn PDF document text
    • http://tadudaxejede.epizy.com/84105473647.pdfIn PDF document text
    • http://gudanomakorake.epizy.com/48902741589.pdfIn PDF document text
    • http://nemebikox.epizy.com/xozolamuporijazurozut.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_off0000ca3a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCA3A 5632 bytes
SHA-256: 7d7cd546bf2ca2c7c5c1fe63a3b789570256eaffa1977c87525076fdd1c2540c
font_01_sfnt_off0000dd75.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD75 10020 bytes
SHA-256: a1f79644cdf26c2368d4dd74be498a6aa07c3cd303e019901cc94c0a0978cd2d