Malicious PDF — malware analysis report

Static analysis result for SHA-256 a4f306daf95dcb81…

MALICIOUS

PDF

61.3 KB Created: 2020-12-08 00:47:28 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-07-01
MD5: 7340c465b0097dff67b172eb226e5231 SHA-1: 6c7db0caed675329574b816539308d0c0ea18ca9 SHA-256: a4f306daf95dcb816a1127bf1611bf926675c159fa6e045c1a9596ff0913c42c
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://trafficel.ru/wb?keyword=northwind%20database%20sql%20server PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4450438/normal_5faae1c242ec1.pdfIn PDF document text
    • https://wejuvizir.weebly.com/uploads/1/3/4/3/134395749/ad885da16a.pdfIn PDF document text
    • https://pilorixo.weebly.com/uploads/1/3/4/6/134689004/jakubiwadabom.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off0000b485.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off0000b485.bin)
    • https://uploads.strikinglycdn.com/files/54769db2-317c-47ab-a3c7-2ad61abd3353/mente_cuantica.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/008b2dcf-0506-4db4-8947-73222c517d22/tuket.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ecb27327-61f5-4776-8d59-3325ba695470/tiberius_t8_1.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/971de52b-cf19-497a-b9bb-e673dcde3d2c/53711943584.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc549e8c6d96458363f0fae/t/5fc805ca41a2531d3fe72d4e/1606944202949/9815478106.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/47d2c7c7-713b-4a24-8c06-4fc7be896ca8/67307088168.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d51df948-1e20-418d-8e06-7d896b96aac6/42912272730.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5a7b4847-1c1f-49a6-9f34-2bc773a6ef38/bevaxovifukel.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cc682b98-2a56-4303-860c-621b1e6dd905/hampton_bay_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0fd63aae-f93d-4204-9f5f-967283bf804b/dieta_cetogenica_30_dias_gratis.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a2fcef43-0b46-4006-8388-d679c18f0629/watch_lorax_online_free.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_off0000b485.bin)

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000b485.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB485 5300 bytes
SHA-256: 2e3eb84a1c0ec351a4b3f3f8dcef09b66eecde21e78f57e751ef33c399e6b888
font_01_sfnt_off0000c696.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC696 9992 bytes
SHA-256: 2dc907ed79e22b07ea5f6aaeb63cdaa6282c39bfb07ca9a443ea673f291b3a7d

Open this report in the interactive analyzer, or submit your own file for analysis.