Malicious PDF — malware analysis report

Static analysis result for SHA-256 5d8629cf511d2e44…

MALICIOUS

PDF

83.2 KB Created: 2021-08-09 08:56:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-18
MD5: 99771ab1e8bea110ae0fa25aa92ba27e SHA-1: c0098dccd8d1e71adda3e51ebb57d02eb05bb293 SHA-256: 5d8629cf511d2e440f2e57bf6964a0f5dc92849d1227bc2f8dccba72973db109
156 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

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 http://thermogroup.ru/uploads/files/vakoregura.pdf In PDF document text
    • https://tspinstruments.com/cache/fck_files/file/9937649590.pdfIn PDF document text
    • https://brickbodysupplements.com/newerac2c/userfiles/file/23296438738.pdfIn PDF document text
    • http://reanda.com/jingkelun/userfiles/files/20210604191827.pdfIn PDF document text
    • http://fizjoactiv.eu/Upload/file/25186857981.pdfIn PDF document text
    • http://zuche0551.com/upload/file/47062171444.pdfIn PDF document text
    • https://actioncoach.com.my/wp-content/plugins/formcraft/file-upload/server/content/files/160dbbb2641a2e---49064514057.pdfIn PDF document text
    • http://qqsbg.net/uploads/file/41332191375.pdfIn PDF document text
    • http://www.shipsupply.co.mz/wp-content/plugins/formcraft/file-upload/server/content/files/16085d05daf600---jebol.pdfIn PDF document text
    • http://cedule-plachty.cz/files/file/dufizokif.pdfIn PDF document text
    • http://ferramentabelleggia.it/public/file/batode.pdfIn PDF document text
    • http://adhdesign.de/userContent/files/20210619044911-bivudupoxusosa.pdfIn PDF document text
    • http://suseefinance.com/userfiles/file/32842842352.pdfIn PDF document text
    • https://shrmivirtual.org/wp-content/plugins/super-forms/uploads/php/files/0d4cd2dfccf8c765f50ef61fdbab280c/83437608523.pdfIn PDF document text
    • http://supermarketdv.ru/files/file/modugeludax.pdfIn PDF document text
    • http://www.holzbau-hoelzl.at/wp-content/plugins/formcraft/file-upload/server/content/files/160b32909ce2c3---34976838076.pdfIn PDF document text
    • http://stkvn.ru/wp-content/plugins/super-forms/uploads/php/files/fd64cb4d27f3d532d24487fdc41b9926/podatasiruzuf.pdfIn PDF document text
    • http://poongdung.com/FileData/ckfinder/files/20210624_D12B11410768DEDC.pdfIn PDF document text
    • https://agilitynd.com/wp-content/plugins/super-forms/uploads/php/files/dc80f869abbb54bf6300bd2a0446ee20/94053386621.pdfIn PDF document text
    • https://elitteaccesorios.com/wp-content/plugins/super-forms/uploads/php/files/ns69mavolklccnov6u5rhs5g1t/puzudanepin.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/3CAf4wW3hvY/uplcv?utm_term=download+youtube+go+mod+apk+terbaruPDF link annotation
    • 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://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e1dd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE1DD 16940 bytes
SHA-256: d96fa52dcd59130caa787299f21f75f2eea89acc5d2a15e132738aa2c880c762
font_01_sfnt_off00010e31.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10E31 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00012648.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12648 11008 bytes
SHA-256: 4f792f2cc4fcc8c02c4e35eef1cfe4265aca3a5627360efa128035d1b2bc5211

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