Malicious PDF — malware analysis report

Static analysis result for SHA-256 79301ad3ab5e7f69…

MALICIOUS

PDF

81.8 KB Created: 2021-09-08 13:18:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-15
MD5: 3c214558a4cc41b0fa434acb78f7c0f0 SHA-1: 9533459f01a11b101eec577e1f69cf2581b66092 SHA-256: 79301ad3ab5e7f69b224bed111342bf2290d9c24d284b0d11982ab4a56ff2e81
156 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9974

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
  • 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://reazfarah.com/ckfinder/userfiles/files/riterofenijodebora.pdf In PDF document text
    • https://hahapediatric.com/uploads/files/202109080533078986.pdfIn PDF document text
    • https://efckrakow.pl/userfiles/file/12951736915.pdfIn PDF document text
    • http://daechienglishpark.com/ckfinder/userfiles/files/fowupozinukotatosinos.pdfIn PDF document text
    • http://softwaretesting.kr/club/data/userfiles/file/20210904173111.pdfIn PDF document text
    • http://udelimpa.es/ckfinder/userfiles/files/saroxemakix.pdfIn PDF document text
    • http://www.mediagrand.hu/data/editorfile/bedojesexiv.pdfIn PDF document text
    • http://bangdinhphucat.com/quangbasanpham/app/webroot/upload/image/files/26863768920.pdfIn PDF document text
    • http://pansophers.com/wp-content/plugins/formcraft/file-upload/server/content/files/16136dc447abfa---97438492731.pdfIn PDF document text
    • https://fedico.ca/upload/editor/file/xovewuwozisepopinut.pdfIn PDF document text
    • https://masterjobintl.com/ckfinder/userfiles/files/sovurokalafibejafesegu.pdfIn PDF document text
    • http://www.danvillern.com/wp-content/plugins/super-forms/uploads/php/files/dc11dda4e1bf3352a36c60b0e4aeeecb/59846482092.pdfIn PDF document text
    • http://thetsaban3watnuea.com/UserFiles/file/doluguzewozeravegikazexil.pdfIn PDF document text
    • http://jiendurancecoaching.com/ckfinder/userfiles/files/76828986586.pdfIn PDF document text
    • https://cahayamimpi1.com/contents/files/gigukevokowirok.pdfIn PDF document text
    • http://www.mvdisposal.com/wp-content/plugins/formcraft/file-upload/server/content/files/16138719f1bca9---83470753500.pdfIn PDF document text
    • http://senseoftourism.dk/userfiles/file/jubozurenovolusodaxopiva.pdfIn PDF document text
    • https://fwstc.in/userfiles/file/jodok.pdfIn PDF document text
    • http://ghibms.com/userfiles/files/64909035665.pdfIn PDF document text
    • https://nieruchomosciturystyczne.eu/files/file/nimolubugi.pdfIn PDF document text
    • http://studioesflores.pl/obrazy/file/74929360603.pdfIn PDF document text
    • http://charontrade.hu/data/file/lakorizesa.pdfIn PDF document text
    • http://guss-ex.de/uploads/fck/file/wezuberuzoxerajo.pdfIn PDF document text
    • http://dreamcatcherltd.com/userfiles/file/lunumuroni.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/ngfLrbzwjls/uplcv?utm_term=codigo+civil+de+mocambique+actualizado+pdfPDF 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_off0000d836.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD836 11136 bytes
SHA-256: a77419674cd3c4fc3542bd8ff474085954e1ff600f08dc89c8267db91a612620
font_01_sfnt_off0000f195.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF195 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off000109a7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x109A7 18252 bytes
SHA-256: f9bfdb471d46b2335f8dbcb6e09ccba0335732db8c21fb62c034ec00c6100710