Malicious PDF — malware analysis report

Static analysis result for SHA-256 98fdcb374e716c93…

MALICIOUS

PDF

399.1 KB Created: 2022-02-28 18:46:42 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-07-08
MD5: b011b1dbbc0609b80d91ec4fae9b9130 SHA-1: cc532e9e18ca792becf39499b72b66cc5ebbd494 SHA-256: 98fdcb374e716c93e5fcb4fdca4b5f2f2d97992e87d7b17d3bbfa741db40e1f4
166 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.6448

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 https://wirut.co.za/XSRYdR1H?utm_term=analyzing+histograms+worksheet PDF link annotation
    • http://www.ponderosafestival.com/wp-content/plugins/formcraft/file-upload/server/content/files/1621b985b3c1b5---moporetobepitoreja.pdfIn PDF document text
    • https://kachhiproperties.com/wp-content/plugins/super-forms/uploads/php/files/ea61ac963f84789c8e3719ddc49c85ff/38145185380.pdfIn PDF document text
    • http://mlsy.cz/images/file/files/35005748835.pdfIn PDF document text
    • https://digiconelectronics.com/media/dalibogixudabigi.pdfIn PDF document text
    • http://cecev.com/stockages/files/60419329712.pdfIn PDF document text
    • http://zssadkowice.pl/pliki/96655171892.pdfIn PDF document text
    • https://bahamianbrewery.com/ckfinder/userfiles/files/45956271981.pdfIn PDF document text
    • http://alwaditrading.com/userfiles/files/vuwobirosegosozepax.pdfIn PDF document text
    • https://blsautomation.com/ckfinder/userfiles/files/dupademeruvapojok.pdfIn PDF document text
    • https://www.ideakliniksisli.com/wp-content/plugins/formcraft/file-upload/server/content/files/1621416f8e1221---87906481926.pdfIn PDF document text
    • https://bbpartner.cz/userfiles/file/nijuduzurixoxowajuzugox.pdfIn PDF document text
    • https://www.ccs-corporation.com/ckfinder/userfiles/files/77418654470.pdfIn PDF document text
    • https://residencialconilcosta.es/kcfinder/upload/images/files/vigetamijiwubuju.pdfIn PDF document text
    • https://parokaonline.hu/upload/files/43001629580.pdfIn PDF document text
    • https://currenwatch.myhost360.cn/file/upload/files/02-27-18-32-24-44.pdfIn PDF document text
    • http://wetravels.com/kcfinder/upload/files/mowitorofatapaxit.pdfIn PDF document text
    • https://pepinieramontana.ro/ckfinder/userfiles/files/55567760232.pdfIn PDF document text
    • https://pmms-online.com/assets/file/pawuwuguzugisu.pdfIn PDF document text
    • http://livilgirls.com/files/jojedij.pdfIn PDF document text
    • https://brune-schmuckwerk.de/ckfinder/userfiles/files/dasulusepovoxifeso.pdfIn PDF document text
    • http://www.varnamonarradio.se/admin/kcfinder/upload/files/69578017244.pdfIn PDF document text
    • http://stjohnslab.com/kcfinder/upload/files/61726133859.pdfIn PDF document text
    • https://n95america.com/wp-content/plugins/super-forms/uploads/php/files/884393e9cc2b67c2846ff71573baaa1e/povul.pdfIn PDF document text
    • http://nextgenship.net/upload/file/20220211164459964025.pdfIn PDF document text
    • https://kalendarz.probik.pl/fckeditor/userfiles/file/35742661936.pdfIn PDF document text
    • https://maquinandoysubastando.com/dleyes/admin/fotos/file/vonanaxile.pdfIn PDF document text
    • http://filmovani.eu/img-content/files/938822145.pdfIn PDF document text
    • http://shiny-baby.com/fileimage/file/revisemixalufuboliwupa.pdfIn PDF document text
    • http://karinameal.com/imgdish/files/21644651052.pdfIn PDF document text
    • https://villagrancanaria.bookipro.com/js/libs/ckeditor/plugins/kcfinder/upload/files/kunagovep.pdfIn PDF document text
    • http://www.ghidmariaj.ro/app/webroot/files/ckfinder/userfiles/files/40900226953.pdfIn PDF document text
    • http://genevacars.ru/public/file/23360665432.pdfIn PDF document text
    • http://ogledalata.bg/uploads/pages/files/84276513839.pdfIn PDF document text
    • https://greassi.com/editor_upload/file/64711974496.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_off0005cc25.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off0005cc25.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0005cc25.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5CC25 10888 bytes
SHA-256: 7433abcb4cf2f187dbfe4bc5f98bea13f7bb00f8fea16daf2d8a9f028efa7a15
font_01_sfnt_off0005e551.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5E551 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9
font_02_sfnt_off0005fc6c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5FC6C 18448 bytes
SHA-256: 52e16e6ed697d27bd7780aa41efacb8b1d37b9c511916e81978e6e7ac3c88be4