Malicious PDF — malware analysis report

Static analysis result for SHA-256 94901ac0cf7347e1…

MALICIOUS

PDF

43.6 KB Created: 2020-11-05 03:43:25 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-04-11
MD5: 5986c1f728959c53b2ca322430994a75 SHA-1: df541d49b0a05d06c7742af7627a6c839a2ef8bc SHA-256: 94901ac0cf7347e1fcbc0504d78054a201df1f6539f8dca9c879e08226de3247
194 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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://gettraff.ru/wb?keyword=heather%20haley%20wvlt%20weather In PDF document text
    • https://s3.amazonaws.com/vatosolikijike/all_article_in_english_download.pdfIn PDF document text
    • https://mabulibatelirip.weebly.com/uploads/1/3/4/5/134597637/dujataz.pdfIn PDF document text
    • https://s3.amazonaws.com/purawuma/39885068988.pdfIn PDF document text
    • https://s3.amazonaws.com/damevusom/hobbs_and_shaw_parents_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/leguvefu/bastards_of_istanbul_free_download.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384652/normal_5f8c597caadb8.pdfIn PDF document text
    • https://kuzaloxamuw.weebly.com/uploads/1/3/1/4/131406684/2fb1c1cf7e39.pdfIn PDF document text
    • https://s3.amazonaws.com/vezumobigodub/neduxovuk.pdfIn PDF document text
    • https://s3.amazonaws.com/jewizopukuni/pascal_siakam_rookie_year.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off00006cf6.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off00006cf6.bin)
    • https://uploads.strikinglycdn.com/files/2fc6f533-67c5-4021-a1ce-657b734ab20b/wojavodimawiv.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1f666c6b-3b5f-432c-a51a-74172ebcc34e/wisofenozixe.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 extracted file (font_00_sfnt_off00006cf6.bin)

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006cf6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6CF6 4808 bytes
SHA-256: 922907c9a5d1bc157dfe231e51aa5c9172e881e6d2a6f6edb59febdd59b0966f
font_01_sfnt_off00007d61.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7D61 10608 bytes
SHA-256: 6516113efd448bee327f3eaedefa08c8035e92d58ca569260e679a53a1ce17e4