Malicious PDF — malware analysis report

Static analysis result for SHA-256 4d997e492ed37d80…

MALICIOUS

PDF

66.0 KB Created: 2021-02-07 03:23:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: a1c49b9ce295e83552013312a2e6454c SHA-1: fcf0cf1f53a517e57ec481121361ca651626b896 SHA-256: 4d997e492ed37d809f2816611eaa3e2c90b59b0bf206b99b7e9ef9b3e8e9fff5
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://druttle.ru/wb?keyword=bahubali%201%20movie%20telugu%20free PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4420013/normal_5fd97beb3e0ab.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4460228/normal_6006afd9bba80.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4458856/normal_5fe850862dc4e.pdfIn PDF document text
    • https://vanazufir.weebly.com/uploads/1/3/2/7/132740694/2fe21071cf.pdfIn PDF document text
    • https://nukofagola.weebly.com/uploads/1/3/4/8/134883999/timagurijotefuj.pdfIn PDF document text
    • http://mscgis.net/soketakisoduvaxoxivezebasxtlfn.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4499309/normal_60035e4095196.pdfIn PDF document text
    • http://studytogether.fun/the_activity_series_pogil_answer_keyezz72.pdfIn PDF document text
    • https://sefedajexoxoj.weebly.com/uploads/1/3/4/4/134479396/ce6887c1.pdfIn PDF document text
    • http://vupiziriwopo.22web.org/mobawipedemuk.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4369786/normal_5fdfa6c7b48ca.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4420031/normal_5feb3fde7b926.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4459319/normal_6004a4a1ee811.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/sojebelevenex/madusufozojivufepixev.pdfIn PDF document text
    • https://s3.amazonaws.com/muvemasoxaji/47976410301.pdfIn PDF document text
    • http://nekogepi.epizy.com/xufuvuworufos.pdfIn PDF document text
    • https://s3.amazonaws.com/farefasejikap/49595745640.pdfIn PDF document text
    • https://s3.amazonaws.com/dotivaf/velojujepulufeg.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_off0000c4fc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC4FC 5304 bytes
SHA-256: 40e2545ac4bc39c28f9d60728112f28736689320396173f9284064c355544af0
font_01_sfnt_off0000d6f7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD6F7 10600 bytes
SHA-256: dd33da0082aa32fccd4799deda6bb06a0efd19bb2357099b8ac597636b75086d