Malicious PDF — malware analysis report

Static analysis result for SHA-256 258a796bd5d52479…

MALICIOUS

PDF

453.4 KB Created: 2022-03-22 16:51:37 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-07-12
MD5: fce7580e6d256beba5a14af1e7db0b81 SHA-1: a07927e78acabdef9fd4edac35a24ed9dc4a1902 SHA-256: 258a796bd5d52479f707f6783f8ee2c84ced546c4c27a908d470a20b57e3ebfa
166 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.5449

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://peter-scherer.de/userfiles/file/50261603852.pdf In PDF document text
    • http://snbh.imadiff.net/kcfinder/upload/files/18031355993.pdfIn PDF document text
    • https://klingende-zeder.de/wp-content/plugins/formcraft/file-upload/server/content/files/1622e0ede02347---92565199847.pdfIn PDF document text
    • http://library.nesdb.go.th/ic/admin/ckfinder/userfiles/files/kevitusumexuzepuxanadigik.pdfIn PDF document text
    • https://kudamatsu.org/userfiles/file/32192540651.pdfIn PDF document text
    • https://sharmtocairo.com/userfiles/files/daferedogunudizifipidaso.pdfIn PDF document text
    • http://ehomeforeclosure.org/images/file/17497200079.pdfIn PDF document text
    • https://techlan.pl/files/file/60136338396.pdfIn PDF document text
    • https://tdh-europe.org/files/files/47262275067.pdfIn PDF document text
    • http://busankid.com/webfiles/board/file///93604064054.pdfIn PDF document text
    • https://www.pharmaright.ca/wp-content/plugins/super-forms/uploads/php/files/j2g1u15bke02v1s5opvj72r8ut/xopon.pdfIn PDF document text
    • https://paymentor.nl/uploads/file/moxin.pdfIn PDF document text
    • http://usateatop.com/_upload/files/pemafenukomo.pdfIn PDF document text
    • http://comercialardevolana.net/admin/kcfinder/upload/files/fabadutunajedewit.pdfIn PDF document text
    • http://www.masozilina.sk/ckfinder/userfiles/files/kowibanaras.pdfIn PDF document text
    • http://itineraire-consulting.com/ckfinder/userfiles/files/6472995979.pdfIn PDF document text
    • https://rhythmcprandfirstaid.com/wp-content/plugins/super-forms/uploads/php/files/bdd322a8f68d1044e5f8fc6bc8130698/selazopobesogewuten.pdfIn PDF document text
    • http://petrduchek.com/files/5694951627.pdfIn PDF document text
    • http://nitdgp.ac.in/uploads/userfiles/files/70033930993.pdfIn PDF document text
    • http://upasamed.org/Content/uploads/files/48542618793.pdfIn PDF document text
    • http://sedistec.de/img/uploads/files/vepadimalulixotelo.pdfIn PDF document text
    • http://bioengenharia.com.br/public/libs/kcfinder/upload/files/14276399044.pdfIn PDF document text
    • https://dassti.cl/admin/uploads/file/87978409936.pdfIn PDF document text
    • http://tcsklife.com/filespath/files/20220205031627.pdfIn PDF document text
    • http://020tzs.com/baige/images/userfiles/file/8770835420.pdfIn PDF document text
    • http://allegroescrow.com/wp-content/plugins/formcraft/file-upload/server/content/files/161fbc1eb17498---mexokamusife.pdfIn PDF document text
    • https://ribaczpeter.hu/files/file/surabazuxa.pdfIn PDF document text
    • http://okinawa-touch.com/app/webroot/js/kcfinder/upload/files/19705147083.pdfIn PDF document text
    • https://antiquites-opio.com/kcfinder/upload/files/tamigumu.pdfIn PDF document text
    • http://queuemanagementsystems.com/wp-content/plugins/formcraft/file-upload/server/content/files/162376f5cc9dc3---nemalupalorewavijajewezut.pdfIn PDF document text
    • https://bcinterior.gocascadia.com/images/cms/file/39043883556.pdfIn PDF document text
    • http://bridgeonlaw.com/filespath/files/20220225195208.pdfIn PDF document text
    • http://studiosantese.eu/userfiles/files/47005501410.pdfIn PDF document text
    • http://erdelyironkbutor.hu/admin/kcfinder/upload/files/bokujosus.pdfIn PDF document text
    • http://islaminkiel.de/webmisr/uploadwebmisr/file/73213911051.pdfIn PDF document text
    • http://conepe.org.br/public/ckeditor/kcfinder/upload/files/reperer.pdfIn PDF document text
    • https://wirut.co.za/XSRYdR1H?utm_term=nba+2k18+mapPDF 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_off0006a9c6.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off0006a9c6.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0006a9c6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6A9C6 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9
font_01_sfnt_off0006c0e6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6C0E6 10140 bytes
SHA-256: e53beff19f3c7a6a5ab7cdfae1c6c45be43dccf68c669cd43535e469400d53ab
font_02_sfnt_off0006d76f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6D76F 17464 bytes
SHA-256: 7b7d43cbe8edab0431dd728aad8247e8078fb340387c86110debc7778d62d190