Malicious PDF — malware analysis report

Static analysis result for SHA-256 de3c2b06a90a0f76…

MALICIOUS

PDF

69.0 KB Created: 2021-02-12 08:28:00 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 42d411fd2a69926ab6acf9bc41ab69b2 SHA-1: a886f674f1eb3e54c15d5ae39cf2596fb6730f77 SHA-256: de3c2b06a90a0f764a6be6eaa2c15ced06a8404f4a9c2555d4967d7fe88edd36
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://leonvi.ru/wix?keyword=st+vincent+de+paul+food+pantry+beaver+dam+wi PDF link annotation
    • https://nukubutanedun.weebly.com/uploads/1/3/5/3/135309192/gekowemadukese-zifeb.pdfIn PDF document text
    • https://fapixuguxoga.weebly.com/uploads/1/3/1/0/131070829/129057.pdfIn PDF document text
    • http://fubawubu.22web.org/welelubizofekogidu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4485299/normal_601541d0326ea.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413835/normal_600ffea3a3707.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4385028/normal_5fcacac7d8365.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/wixamupelinere/kaposi_varicelliform_eruption_pathology.pdfIn PDF document text
    • https://s3.amazonaws.com/zunaporam/wegofefizemonogu.pdfIn PDF document text
    • http://dobejul.epizy.com/67892620616.pdfIn PDF document text
    • https://s3.amazonaws.com/sisaxu/73577506457.pdfIn PDF document text
    • https://s3.amazonaws.com/kevava/ranenuluzajewesoluxe.pdfIn PDF document text
    • https://s3.amazonaws.com/warapagefasovi/st_aloysius_college_jabalpur_admission_form_2019.pdfIn PDF document text
    • https://s3.amazonaws.com/bitizopovopaso/juposaluduxezek.pdfIn PDF document text
    • http://nuzuzetopodufi.epizy.com/free_nature_google_slides_templates.pdfIn PDF document text
    • https://s3.amazonaws.com/kizugokofo/81162636903.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_off0000d154.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD154 5620 bytes
SHA-256: 1560f09258f82c32df06648e68813eec03c37d742148e11ec947e57c9238db7c
font_01_sfnt_off0000e479.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE479 10112 bytes
SHA-256: f34c4213ae91be91254c783e96411be4c891f67378570c0c728695392e065072