Malicious PDF — malware analysis report

Static analysis result for SHA-256 4afffd9f9482bc2f…

MALICIOUS

PDF

60.2 KB Created: 2020-11-16 20:27:47 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-06
MD5: 57a8300b1304fb4d18aea9eaaa2cf606 SHA-1: c224c9d2a134b0c36b75242b23fc3b495fcc2e72 SHA-256: 4afffd9f9482bc2f21586c0d1244aea85566b8bfbded908aa4857efad01cc45f
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://trafffi.ru/wb?keyword=darkness%20rises%20guide%20reddit PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4426696/normal_5fa9d28278674.pdfIn PDF document text
    • https://segakimorepej.weebly.com/uploads/1/3/0/7/130738797/vigadi.pdfIn PDF document text
    • https://joleziravakejar.weebly.com/uploads/1/3/4/4/134460301/xurejo.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370767/normal_5fb2a68a2d0c7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369486/normal_5f9bc4c2adcf5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365546/normal_5f87b1850bab2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366389/normal_5f99b7fb29668.pdfIn PDF document text
    • https://pomitowu.weebly.com/uploads/1/3/4/3/134389192/kojaxobasepanij.pdfIn PDF document text
    • https://foduxami.weebly.com/uploads/1/3/4/4/134452333/kukak-letebenok-tonowemejato.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4464314/normal_5faabfd785b85.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/9b13c852-78fb-4572-b11f-d6188632a6da/putadotizimutokew.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_off0000b08d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB08D 5024 bytes
SHA-256: df379084909e7ac93ae7347e6d593f020318e8096b2d7516d740489a653d3064
font_01_sfnt_off0000c1b9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC1B9 10220 bytes
SHA-256: 6658ff4f6c9eff16859b0f2e0b7e916d7f2a851be03c43aa01ab8839c51808a3