Malicious PDF — malware analysis report

Static analysis result for SHA-256 5467f362dbd0ba83…

MALICIOUS

PDF

83.0 KB Created: 2021-02-20 11:34:19 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 293dd3f74b4bb051158dc36340a819f4 SHA-1: 26f5b5082a539883104d651500a41cbe04c96438 SHA-256: 5467f362dbd0ba832c110c0322361f05c14bf085aa5f4d55441d63af5a8602a5
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://bologen.ru/123?utm_term=biolog%25C3%25ADa+celular+y+molecular+4e+ricardo+paniagua+pdf PDF link annotation
    • http://afracheat9.xyz/portugues_brasileiro_para_estrangeiroscmvzv.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4414515/normal_600b5db0059cf.pdfIn PDF document text
    • http://load-bcp.com/gods_of_the_fall6qrcu.pdfIn PDF document text
    • http://fastgetme.online/the_audacity_of_hope_author_crossword_clueh6exa.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413374/normal_5fdbe12b5ee5a.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4469349/normal_5fe0ae0e6eecf.pdfIn PDF document text
    • http://ru-1.casa/html_template_tag_attributesfncqs.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/tirimofufemukat/savexob.pdfIn PDF document text
    • https://s3.amazonaws.com/mogedozara/whatsapp_status_in_tamil_album_songs.pdfIn PDF document text
    • https://s3.amazonaws.com/mesixadelomomo/pogalajajobusuziputan.pdfIn PDF document text
    • https://s3.amazonaws.com/bulalowisu/lutikebakiwipaxet.pdfIn PDF document text
    • https://s3.amazonaws.com/mejobu/98672907389.pdfIn PDF document text
    • https://s3.amazonaws.com/luxelula/54225286831.pdfIn PDF document text
    • https://s3.amazonaws.com/xamibebulosaxug/2008_chevy_trailblazer_repair_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/bulalowisu/apokryphen_evangelien.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_off00010274.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10274 5592 bytes
SHA-256: 4c8d3a2e9b0ac080bffbbe816215689bedeec53819dae1f4f898e8e545e67053
font_01_sfnt_off00011583.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11583 12060 bytes
SHA-256: 907af271a1b4ad7ad3cf93a4bf93b38e7d37c38461d57c184298be9bb2c9fb83