Malicious PDF — malware analysis report

Static analysis result for SHA-256 9493db05c4ef8456…

MALICIOUS

PDF

63.4 KB Created: 2020-11-19 09:30:00 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-04-10
MD5: ed915e11c68be42a0f37edf2549ed023 SHA-1: 347388372527ef56cdfa3e106269353fc45a8d06 SHA-256: 9493db05c4ef8456527c62c4b54dfbc428ab0a336fd725e86a9ac80b73315dac
194 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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.
  • 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://cdn-cms.f-static.net/uploads/4383801/normal_5f964b1189d0f.pdf In PDF document text
    • https://cdn-cms.f-static.net/uploads/4494432/normal_5fb3c70770420.pdfIn PDF document text
    • https://folukufisika.weebly.com/uploads/1/3/1/3/131384255/9562264.pdfIn PDF document text
    • https://s3.amazonaws.com/dinigugaxej/gemez.pdfIn PDF document text
    • https://s3.amazonaws.com/bokofapig/viruxagofeg.pdfIn PDF document text
    • https://s3.amazonaws.com/fenatagazise/figiwirunokizunig.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365636/normal_5f871a76ed6e1.pdfIn PDF document text
    • https://s3.amazonaws.com/bisute/74619100547.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4373281/normal_5f91e7568b15a.pdfIn PDF document text
    • https://bixanizutojez.weebly.com/uploads/1/3/4/4/134490846/6044465.pdfIn PDF document text
    • https://s3.amazonaws.com/lebejos/minemabuzefotevo.pdfIn PDF document text
    • https://s3.amazonaws.com/tizowodifi/kevabesabilutupujav.pdfIn PDF document text
    • https://s3.amazonaws.com/gazitif/google_ads_video_certification_answers_2018.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4476147/normal_5fa5b81275040.pdfIn PDF document text
    • https://gettraff.ru/strik?utm_term=motorola+apx+4000+holsterIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off0000ba3b.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off0000ba3b.bin)
    • 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 extracted file (font_00_sfnt_off0000ba3b.bin)

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ba3b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBA3B 5208 bytes
SHA-256: 9af0d975be9d3a20227a12a658a1ec3f2080edeacdac4c6109e600a1898039ad
font_01_sfnt_off0000cbf9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCBF9 10648 bytes
SHA-256: cff918b8f14474da1c58965f43022bba473e188d37404bc997ff2346a101e145