Malicious PDF — malware analysis report

Static analysis result for SHA-256 4af1d0f1aa60b450…

MALICIOUS

PDF

72.7 KB Created: 2021-06-20 21:49:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-06
MD5: d1f43a547a3a75ce194b73198351dd86 SHA-1: 1716497e5c7bfc263eea81b05248811cadd31446 SHA-256: 4af1d0f1aa60b4502d10fc7dbe1576da6707589c5c7acf5a42c45d6d7e68a77f
156 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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
  • PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM
    PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://crewmak.ru/uplcv?utm_term=fly+girls+movie+online+free PDF link annotation
    • https://414movement.com/wp-content/plugins/super-forms/uploads/php/files/1aed75235be1dfb3a0d4922ea1b1f613/silagovojugejadupevor.pdfIn PDF document text
    • http://msamerica.net/clients/873634/File/jerugomusapajumati.pdfIn PDF document text
    • https://krimgranit.ru/wp-content/plugins/super-forms/uploads/php/files/d4debfb91444d271cf463ed60055727c/rapikowegiragekagafa.pdfIn PDF document text
    • http://deauville.ru/files/file/94822519513.pdfIn PDF document text
    • http://nebovsem.ru/app/webroot/files/files/famojifubinagofoxezef.pdfIn PDF document text
    • http://konditsionery-reutov.ru/upload_picture/file/43886419471.pdfIn PDF document text
    • https://www.lang-mayer.de/wp-content/plugins/formcraft/file-upload/server/content/files/160a7b53b9e059---31580497672.pdfIn PDF document text
    • https://www.conkite.com/wp-content/plugins/super-forms/uploads/php/files/4c3eca8dc0dfe1fe1de631560658c123/lufix.pdfIn PDF document text
    • https://sellerflows.com/wp-content/plugins/super-forms/uploads/php/files/ccbf1f43e1fac1f2a76706950b7abeac/budejewixatu.pdfIn PDF document text
    • https://wholisticvibrations.com/wp-content/plugins/super-forms/uploads/php/files/786c80e2b4f27ab4c66e4575d1216346/xiwivoxunujupetog.pdfIn PDF document text
    • http://bergfin.se/wp-content/plugins/formcraft/file-upload/server/content/files/1609ee41192f48---zorowinokebaba.pdfIn PDF document text
    • http://zadonskiy.ru/wp-content/plugins/formcraft/file-upload/server/content/files/1609ae7b7a49cb---90722233179.pdfIn PDF document text
    • http://isystem.hu/ckfinder/userfiles/files/3484474378.pdfIn PDF document text
    • http://anhuifan.com/upload_fck/file/2021-5-6/20210506110234291519.pdfIn PDF document text
    • https://www.drserapkagan.com/wp-content/plugins/super-forms/uploads/php/files/anf7f2dj5m3fvjbfktscqag3ap/gusevimixofu.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000e047.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE047 4996 bytes
SHA-256: aa421755c7b632b8289b8cdc1c39f04485612c20d9e252a9e15379ff0f9ce280
font_01_sfnt_off0000f14c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF14C 10908 bytes
SHA-256: d0b08b843017424ccc8213295f5d62717ae6544e1f5c75285924eb689e940216

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