Malicious PDF — malware analysis report

Static analysis result for SHA-256 847335ceb994c04f…

MALICIOUS

PDF

122.1 KB Created: 2022-03-16 17:30:54 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-04-06
MD5: 7bae87a99e5c6e65e3b1f8e7e66bdfad SHA-1: 17adc6a391d5acafd26a5bf9553ffaa52be016f9 SHA-256: 847335ceb994c04fe89b5dd2122202dcc77606966705cbc91244e55c0ed31eb1
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF file was flagged by a machine learning classifier and ClamAV as malicious, indicating a high likelihood of malicious intent. The document contains a large number of embedded URLs, many pointing to compromised WordPress sites, suggesting it functions as a link farm designed to redirect users to malicious content. The presence of these URLs and the overall structure strongly suggest a phishing or malware distribution campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9836

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://loheb.co.za/XSRYdR1H?utm_term=android+material+button+icon+right PDF link annotation
    • https://cristalparkhotel.com/ckfinder/userfiles/files/natedugularebafesi.pdfIn PDF document text
    • https://gulecbakliyat.com/panel/kcfinder/files/62041036127.pdfIn PDF document text
    • https://www.pharmaright.ca/wp-content/plugins/super-forms/uploads/php/files/763tgq0e9h1jb1kkhs7hdvfffl/ligago.pdfIn PDF document text
    • https://mavismanagement.com/wp-content/plugins/formcraft/file-upload/server/content/files/1621193849d981---zujijatumututak.pdfIn PDF document text
    • https://alenakovalchuk.ru/wp-content/plugins/super-forms/uploads/php/files/6238bc138867cbd622f28a4c47c26947/terivukevanurizaja.pdfIn PDF document text
    • https://naseeha.org/wp-content/plugins/super-forms/uploads/php/files/643cf525eeb691a2aa23382be010dc50/bunozutefurilul.pdfIn PDF document text
    • https://www.osteopathe-montpellier-sud.fr/ckfinder/userfiles/files/gusedasorid.pdfIn PDF document text
    • http://www.gets-trade.com/webroot/upload/files/gezuxakamekobitofal.pdfIn PDF document text
    • http://xn--h1agcmh.com/ckfinder/userfiles/files/37510464585.pdfIn PDF document text
    • http://shopgraeagle.com/ckeditor/uploads/files/65700448458.pdfIn PDF document text
    • http://vncdata.net/app/webroot/uploads/files/nimorinofejexox.pdfIn PDF document text
    • https://ln80.cn/filespath/files/20220227134754.pdfIn PDF document text
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/16224a1a334a90---fizutawadurix.pdfIn PDF document text
    • http://cnf.toroudshomal.com/admin/upload/files/91186659889.pdfIn PDF document text
    • https://www.marthomattcollege.org/admin_panel/kcfinder/upload/files/12240056463.pdfIn PDF document text
    • https://amagi.la/wp-content/plugins/formcraft/file-upload/server/content/files/162210d06dce2b---dozapibexa.pdfIn PDF document text
    • http://ageddfjtjgrade.pretty-match.com/upload/files/73808166713.pdfIn PDF document text
    • https://snabavto.com/wp-content/plugins/formcraft/file-upload/server/content/files/16230e00ef3602---219778709.pdfIn PDF document text
    • http://adbrf.com/files/fckeditor/file/1947713874621be515ab600.pdfIn PDF document text
    • https://www.nutfruit.org/js/admin/ckeditor/plugins/kcfinder/upload/files/49096156517.pdfIn PDF document text
    • http://electrogalicia.com/electrogalicia/recursos/archivos/mijegijowufinenovul.pdfIn PDF document text
    • http://chinajessie.com/seadata/data/uploads/img/file/164414510177.pdfIn PDF document text
    • http://andezit-bg.com/files/3086349308.pdfIn PDF document text
    • https://www.tocbirsen.org.tr/ckfinder/userfiles/files/zowijukupatijitinafita.pdfIn PDF document text
    • http://dinhvi5s.com/images/newtech/files/dobibajepe.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://dejavu.sourceforge.netIn extracted file (font_00_sfnt_off00017dfc.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off00017dfc.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00017dfc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x17DFC 10872 bytes
SHA-256: 7ec3bca462912ee489600ff428530fef7b612bbab94b18f7f7dd4ac957673c49
font_01_sfnt_off000196a3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x196A3 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9
font_02_sfnt_off0001adbe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1ADBE 16844 bytes
SHA-256: a616599b2c3b64b48763713fa1d7ef21af2efdba9c3f2afa59393d669b75b035