Malicious PDF — malware analysis report

Static analysis result for SHA-256 81290580736819f0…

MALICIOUS

PDF

75.1 KB Created: 2021-01-08 11:43:20 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-05
MD5: 5d61d67be8c2898cdd9c41c7f9ab5fa8 SHA-1: 0d9804771a6edad607058e0debc5cfa420c71aaa SHA-256: 81290580736819f0d4f8cc33152b8a1fb7ee03f0929f144f620238e51067e0bf
196 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous external links, with a critical heuristic identifying it as a link farm designed for SEO redirection, likely for phishing or malware distribution. The embedded URL 'https://traffset.ru/123?utm_term=longview+academy+of+extreme+martial+arts' and the linked PDF 'https://zofigaxukinepir.weebly.com/uploads/1/3/4/2/134235574/mabojuwiwijunukiku.pdf' are suspicious. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or trojan delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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/123?utm_term=longview+academy+of+extreme+martial+arts PDF link annotation
    • https://zofigaxukinepir.weebly.com/uploads/1/3/4/2/134235574/mabojuwiwijunukiku.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366652/normal_5faaeb61dea6b.pdfIn PDF document text
    • https://tijogarukaro.weebly.com/uploads/1/3/4/7/134710746/4909c993.pdfIn PDF document text
    • https://fomezesas.weebly.com/uploads/1/3/4/3/134343882/3fc78b1d70585e.pdfIn PDF document text
    • https://tiguxenejizowi.weebly.com/uploads/1/3/4/8/134899735/5edba8f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4485807/normal_5fbe7d2489cdd.pdfIn PDF document text
    • https://lekomitigukajar.weebly.com/uploads/1/3/5/3/135345412/2741553.pdfIn PDF document text
    • https://cdn.sqhk.co/zewuxumaro/hdQiijg/highway_patrol_office_meridian_ms.pdfIn PDF document text
    • https://gufubavofunopi.weebly.com/uploads/1/3/4/7/134704705/9859151.pdfIn PDF document text
    • https://rorezumi.weebly.com/uploads/1/3/4/5/134591247/porinipapuboxavavef.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/5a4a01b0-b6f2-4485-980b-8aae0308aee7/12060515743.pdfIn PDF document text
    • https://s3.amazonaws.com/rupatojuko/lewmar_winch_service_manual_volume_6.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2efce267-8a5c-41c1-9a7a-f39deb55dde2/will_herondale_favorite_books.pdfIn PDF document text
    • https://s3.amazonaws.com/mokuwanibof/wafobiwel.pdfIn PDF document text
    • https://s3.amazonaws.com/luxaduzimase/vinebusejadigu.pdfIn PDF document text
    • https://s3.amazonaws.com/vudivuzakal/alkaline_plant_based_diet_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 PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e622.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE622 5604 bytes
SHA-256: ea6687d2f6c68ad43e9d3781bd2488f3cec5e8d3a71b7c9fca267732d19f6410
font_01_sfnt_off0000f94c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF94C 11064 bytes
SHA-256: 4fc123726ea1041a610af965d78a9cd97fa376a945001556d107f6d56d482e80

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