Malicious PDF — malware analysis report

Static analysis result for SHA-256 8f6486f638d3a750…

MALICIOUS

PDF

67.9 KB Created: 2020-11-25 07:42:57 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-04-30
MD5: bb7a33d6ed163fa30fe4de652a01dc8d SHA-1: 53c6e879c24e52a311b6c0e58361d93cf6f53723 SHA-256: 8f6486f638d3a7508feefee15d3337a2ae4ab90a9467074e63fd9bc8b08dc200
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • 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://traffset.ru/wb?keyword=the%20godfather%20music%20score%20free PDF link annotation
    • https://s3.amazonaws.com/pukasojalu/heavenly_bed_sheets_reviews.pdfIn PDF document text
    • https://jedudelovaki.weebly.com/uploads/1/3/4/7/134731231/dojosir_topilo_wunagiwape_wigedun.pdfIn PDF document text
    • https://s3.amazonaws.com/sojaxub/gefijebirolidimem.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365591/normal_5f87156fc0d5c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4407813/normal_5fa285135df0f.pdfIn PDF document text
    • https://s3.amazonaws.com/betefowubevat/park_se_young_we_got_married.pdfIn PDF document text
    • https://s3.amazonaws.com/zuwosil/16460878970.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4385012/normal_5f922cc6992e4.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off0000cd28.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off0000cd28.bin)
    • https://uploads.strikinglycdn.com/files/3e1f514a-94b2-4300-aa71-72355a0e44ea/nibura.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cda2e2c3-309f-4d56-9f8b-a6aa175e15db/characteristics_of_the_phylum_animalia.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_off0000cd28.bin)

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cd28.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCD28 5352 bytes
SHA-256: fce1c0bd6739d9c3abf6fd29b853d94c32e938d0ee0f4d3df7f549c6ee18d323
font_01_sfnt_off0000df35.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF35 10560 bytes
SHA-256: be4dc46c870dd269c5297dfadb4f6df4830a6169718819018f641f0defa9afba