Malicious PDF — malware analysis report

Static analysis result for SHA-256 4875df35cfc0596b…

MALICIOUS

PDF

293.3 KB Created: 2022-03-10 19:26:13 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-04-21
MD5: c9840f7260a47b856f8b1352eadc9d62 SHA-1: 244eb4e080a529e203b8bff925ac58a6da80c304 SHA-256: 4875df35cfc0596b28575813069500a49967f46dd06d59fc08dfaca8a6c2a342
166 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.6420

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
  • 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 http://bnrware.com/uploadfile/fckeditor/file/55580865146.pdf In PDF document text
    • http://pinxedien.net/upload/files/93240959752.pdfIn PDF document text
    • http://ifaistos.reality.gr/~triantaf/images/file/91286991872.pdfIn PDF document text
    • http://www.binghan.my/userfiles/file/radivevamobovijuj.pdfIn PDF document text
    • http://brighterhealthcare.co.uk/wp-content/plugins/super-forms/uploads/php/files/o4j4a2igvcs9k5ie8bl549j7kg/dewitokeboruwajegor.pdfIn PDF document text
    • https://stillwaiting.org/userfiles/file/bosubuvifuz.pdfIn PDF document text
    • https://www.lorenzofranzone.it/wp-content/plugins/super-forms/uploads/php/files/f41c9d2d8e10f13ffe4e88fdcbccd7f4/tikolifikow.pdfIn PDF document text
    • http://energy-partner.pl/kcfinder/upload/files/mofuw.pdfIn PDF document text
    • https://ulsantour.com/FileData/ckfinder/files/20220302_AA41A111F81C62E9.pdfIn PDF document text
    • https://rockvalleytravel.net/files/files/zokudo.pdfIn PDF document text
    • https://www.sophrologue-nimes.fr/upload/news/files/74488780884.pdfIn PDF document text
    • https://webmanagement.markholz.ro/images/file/togitawibage.pdfIn PDF document text
    • https://elminhaj.org/userfiles/file/39460741705.pdfIn PDF document text
    • https://lokmangal.co.in/wp-content/plugins/super-forms/uploads/php/files/32f05e4e8e0c8e6dc4050c391b3ec96d/53698529779.pdfIn PDF document text
    • https://dpmptsp.pemkomedan.go.id/dpmptspwebaplikasi/libraries/ckeditor/kcfinder/upload/files/mudawifubagiraxuloxiju.pdfIn PDF document text
    • http://thermogroup.ru/uploads/files/bopuxonit.pdfIn PDF document text
    • https://bepcongnghiepphuchung.vn/userfiles/file/jewilaro.pdfIn PDF document text
    • https://a-1commercialkitchenservices.com/ckfinder/userfiles/files/zugusikora.pdfIn PDF document text
    • https://www.naturecare.com.au/kcfinder/upload/files/jotunepobugonujimuto.pdfIn PDF document text
    • http://ngnjl.com/userfiles/files/10991236737.pdfIn PDF document text
    • http://tavaszitura.eu/userfiles/files/63769820641.pdfIn PDF document text
    • http://www.optionassurance.ca/wp-content/plugins/formcraft/file-upload/server/content/files/1621e6368e20a6---nogedugevo.pdfIn PDF document text
    • http://www.cargeacrew.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1620d699a91f4b---28784187795.pdfIn PDF document text
    • https://eledigitalpr.it/allegati/file/gudolobuvewipudagapi.pdfIn PDF document text
    • https://admonks.ru/wp-content/plugins/super-forms/uploads/php/files/82f139d20be9e44223253203df635396/76571264547.pdfIn PDF document text
    • http://alimentosldm.com/userfiles/file/71111209107.pdfIn PDF document text
    • http://protech-t.hu/kcfinder/upload/files/45840383579.pdfIn PDF document text
    • https://rallstarawards.us/nbloom/fckuploads/file/54089976663.pdfIn PDF document text
    • https://trystsalonri.com/images/file/walejesemateken.pdfIn PDF document text
    • https://www.growxponential.com/wp-content/plugins/super-forms/uploads/php/files/d6ve0ebe37hvi303n0unrikluo/bolewadudufan.pdfIn PDF document text
    • https://sunuf.co.za/XSRYdR1H?utm_term=aws+sysops+administrator+study+guide+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 extracted file (font_00_sfnt_off0004270f.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off0004270f.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0004270f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4270F 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9
font_01_sfnt_off00043e2f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x43E2F 11076 bytes
SHA-256: b79a429a23de0aae0063f469a7fb15f8c2c3b04127a3d62fb8d1ddedac40109f
font_02_sfnt_off000457df.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x457DF 17500 bytes
SHA-256: f231a0d65e86476e4664ab80117e1feba01abfbe3397fda47f2751e3b0157e12