Malicious PDF — malware analysis report

Static analysis result for SHA-256 a8b4e13afba5464e…

MALICIOUS

PDF

204.4 KB Created: 2022-03-08 02:20:33 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-04-06
MD5: f0a84dc16b43860165436f3b14d68c8c SHA-1: 2959c40f7c99ee01df3cfc8f2eb39c56a4f1277b SHA-256: a8b4e13afba5464ec40e429889289b6b0053fea281e17f11c05dca0f5eb2f2ed
166 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.7453

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
  • 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.
  • 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.
  • 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://ragaz.co.za/XSRYdR1H?utm_term=congruent+polygons+worksheet PDF link annotation
    • http://metalzilembo.it/userfiles/files/90505774545.pdfIn PDF document text
    • http://gs-metals.com/filespath/files/20220221230806.pdfIn PDF document text
    • https://taechoclub.com/FileData/ckfinder/files/20220221_72C7719FA176A971.pdfIn PDF document text
    • http://www.mswest.co.jp/cmsdesigner/kcfinder/upload/files/84681080951.pdfIn PDF document text
    • http://caerulumpharma.com/upload/files/82462671117.pdfIn PDF document text
    • http://jandenzobv.com/image_uploads/file/boniw.pdfIn PDF document text
    • http://xn--b1afklwjc5g.xn--p1ai/ckfinder/userfiles/files/97915118485.pdfIn PDF document text
    • http://dalieuht.com/app/webroot/uploads/files/77088052647.pdfIn PDF document text
    • https://tahi.hu/ckfinder/userfiles/files/jusodutaxezojijuxonaloji.pdfIn PDF document text
    • https://luquluqu.org/public/assets/js/kcfinder/upload/files/96276192836.pdfIn PDF document text
    • http://chia4kids.ru/ckfinder/userfiles/files/favuvoref.pdfIn PDF document text
    • https://dsverano.com/UserFiles/File/sogalirigojozo.pdfIn PDF document text
    • https://2acontractor.it/images/file/84206466285.pdfIn PDF document text
    • http://redeyeldn.com/userfiles/file/zitezamokazinetujavesit.pdfIn PDF document text
    • http://awards.nl/img/cms/file/64028293764.pdfIn PDF document text
    • http://muralsdecoracio.com/ckeditor/kcfinder/upload/files/tukegasogomozubulisula.pdfIn PDF document text
    • https://fotobolfestmeny.hu/mvc/userfiles/file/56416435324.pdfIn PDF document text
    • https://www.heainc.com/wp-content/plugins/formcraft/file-upload/server/content/files/161f92ba5b401a---dewufep.pdfIn PDF document text
    • http://jsqnchem.com/upload/files/28199027868.pdfIn PDF document text
    • https://wietsevoermans.nl/ckfinder/userfiles/files/fesubesujavo.pdfIn PDF document text
    • http://dalycity.com/wysiwygfiles/file/26497894171.pdfIn PDF document text
    • http://www.horakgolf.cz/ckfinder/userfiles/files/bolodidiwujibojiri.pdfIn PDF document text
    • http://autosvanbeek.nl/mindcms/js/ckf/userfiles/files/gopozepafifazodo.pdfIn PDF document text
    • https://moniimpex.com/wp-content/plugins/formcraft/file-upload/server/content/files/161f91247375b4---38881667332.pdfIn PDF document text
    • http://afi-dwls.de/upload/files/38365309248.pdfIn PDF document text
    • https://i-triada.net/upload/files/41112528911.pdfIn PDF document text
    • http://robbymakka.com/userfiles/file/paworadu.pdfIn PDF document text
    • https://chocoinmobiliario.com/wp-content/plugins/super-forms/uploads/php/files/0856eabdf37dba8a64637b1bc389356f/13863418285.pdfIn PDF document text
    • http://ndt-tl.ru/upload/file/nufozorod.pdfIn PDF document text
    • http://www.grundys.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/161fb89b2439c7---vudulegefexelamibobiju.pdfIn PDF document text
    • https://febrerasesores.com/uploads/kcfinder/upload/files/60081075239.pdfIn PDF document text
    • http://traktor-tv.de/sites/default/files/file/88276645657.pdfIn PDF document text
    • http://khangvietdn.com/uploads/file/61063902365.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_off0002c1ab.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off0002c1ab.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0002c1ab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2C1AB 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9
font_01_sfnt_off0002d8c6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2D8C6 18492 bytes
SHA-256: 62c767ba4fbe9c18b90f6b6a47275ca78465d226a632b8720bda5dd24336eb8d
font_02_sfnt_off00030926.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x30926 10700 bytes
SHA-256: 0b4a76c77037b3840949c0f123a43b0ddf2e7a2c37ae7d67f5f08977c3622b51