Malicious PDF — malware analysis report

Static analysis result for SHA-256 f87e37bb142884e2…

MALICIOUS

PDF

65.6 KB Created: 2020-11-16 17:48:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-16
MD5: 38305b072f0930f7fbf90ac4cea70ee0 SHA-1: 0ccf117c6e0da9e1de46eec520068b1cb976742e SHA-256: f87e37bb142884e20abb3cd94dcd5126c9dad3d6d25e834b2c2df1a5eda1a7e8
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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=dryer%20sheet%20stains PDF link annotation
    • https://misopiwulasi.weebly.com/uploads/1/3/1/8/131856666/sililereloxegete.pdfIn PDF document text
    • https://kugugurufive.weebly.com/uploads/1/3/4/1/134108893/litanibodilowuwidalo.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382618/normal_5f99bc75368cf.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366622/normal_5f888443c94c2.pdfIn PDF document text
    • https://topemarepebide.weebly.com/uploads/1/3/4/3/134316461/davola_xuwuleziforelew_bitupavadus_jijamawu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4468537/normal_5faa62f52fb13.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4386597/normal_5f938359a71ff.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384835/normal_5f8db37b3868d.pdfIn PDF document text
    • https://gunulavosaki.weebly.com/uploads/1/3/4/3/134374607/c59d4ec.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/4fa49656-ad24-46eb-ae84-8733b717dd9d/ventajas_y_desventajas_de_aspel_noi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a8ebae16-841f-4d70-958c-95d5b0c3da6c/92655123834.pdfIn PDF document text
    • https://s3.amazonaws.com/likerajatob/persona_social_link_reverse.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/98e4b2b2-12fc-47fc-8f03-8b9ad2d53a74/493527748.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a295369f-71f4-4706-8a79-76bbfb3d674a/mutaxotufimodabepoxuwepa.pdfIn PDF document text
    • https://s3.amazonaws.com/pezofut/bathymetric_attributed_grid.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_off0000c65a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC65A 4840 bytes
SHA-256: fca7628210b1a3e3d8d6d82df75b4337fd111662bc4ea5b195d57f1d047439de
font_01_sfnt_off0000d6d7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD6D7 10240 bytes
SHA-256: ce16df3f58e2a908e1f3b4a1f12c72b791f57146068ac12358b084d8cf54272e

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