Malicious PDF — malware analysis report

Static analysis result for SHA-256 634d08b1911de6c4…

MALICIOUS

PDF

462.4 KB Created: 2022-03-20 00:25:26 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-04-28
MD5: 6f0b4f5cd7234f6d7cb1856fd4ce6581 SHA-1: 93cb62a9e4c47ec1d3db7e35e5ef3a0729c5347c SHA-256: 634d08b1911de6c4812173a5c55b49a217bf60bcee6ac5afbde0a63b9c036764
136 Risk Score

Machine Learning

  • Nyx PDF Classifier suspicious score 0.4319

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://gorisum.net/fckeditor/upload_file/file/40267310152.pdf In PDF document text
    • http://top1np.com/ckfinder/userfiles/files/88185515951.pdfIn PDF document text
    • http://softwaretesting.kr/club/data/userfiles/file/20220222210311.pdfIn PDF document text
    • http://elmasryeverline.net/public/kcfinder/upload/files/xolopemi.pdfIn PDF document text
    • https://orkhaconstruction.com/wp-content/plugins/super-forms/uploads/php/files/bq4v54r2kunjevh0q2068it3nl/7898842347.pdfIn PDF document text
    • https://lrsinc.co/userfiles/file/rabaguwigalifoxokavitefo.pdfIn PDF document text
    • https://www.colfacor.org.ar/administrador_web/kcfinder/upload/files/sazezibegolu.pdfIn PDF document text
    • http://cbelmira.com/wp-content/plugins/super-forms/uploads/php/files/dd9d85b920a734a4c17611067814e76a/subepevexi.pdfIn PDF document text
    • http://yeke.com.tr/public/kcfinder/upload/files/xibapugakikulobikas.pdfIn PDF document text
    • http://snc.easy-event.net/img/uploads/files/noganumojedonugudewam.pdfIn PDF document text
    • http://ricettebiagi.it/uploads/assets/file/47030807294.pdfIn PDF document text
    • https://sheenabusesandcoaches.com/userfiles/file/96098935407.pdfIn PDF document text
    • https://mots.alaxarxa.cat/cmsimple/images/file/42020952860.pdfIn PDF document text
    • https://sportyou.fr/ckfinder/userfiles/files/jarulodabikeni.pdfIn PDF document text
    • http://greensquares.in/userfiles/file///9648673817.pdfIn PDF document text
    • https://hgb.se/filer/file/14639294675.pdfIn PDF document text
    • https://2acontractor.it/images/file/dadifekewanoxalimikax.pdfIn PDF document text
    • https://flomogroup.com/upload/files/33533382984.pdfIn PDF document text
    • http://belspelen.nl/admin/kcfinder/upload/files/lomizopugufezagibosakulot.pdfIn PDF document text
    • http://xinyuemu.net/assets/202202/files/20220219121207913134.pdfIn PDF document text
    • http://findusafranchise.com/files/files/23398929291.pdfIn PDF document text
    • https://astdubai.co/userfiles/files/85173943164.pdfIn PDF document text
    • https://linardi.ru/files/file/19038818908.pdfIn PDF document text
    • https://aymsoft.us/aym_image/files/vovuragufodizola.pdfIn PDF document text
    • http://childprotectionindia.com/lexcyberia/userfiles/files/gedejofeles.pdfIn PDF document text
    • http://kxqcgs.net/filespath/files/20220301170521.pdfIn PDF document text
    • https://xn--q3cceuw0c6ab0d2ii.com/upload_file/files/futesokubupor.pdfIn PDF document text
    • http://cameronhaddock.com/wp-content/plugins/formcraft/file-upload/server/content/files/1623244ae24777---sudaso.pdfIn PDF document text
    • https://alves.bg/ckfinder/userfiles/files/37088479375.pdfIn PDF document text
    • http://jrscphalashia.org/ckeditor/kcfinder/upload/files/detezek.pdfIn PDF document text
    • http://glearningsolutions.com/userfiles/files/sikop.pdfIn PDF document text
    • http://liveranigioielli.it/userfiles/files/lufop.pdfIn PDF document text
    • https://tuinvandecruys.be/file/24863461638.pdfIn PDF document text
    • http://carzip.biz/files/uploads/files/govoton.pdfIn PDF document text
    • http://entone.es/wp-content/plugins/super-forms/uploads/php/files/811d10f61cba83042292ce195a4e0bf2/vurusetizuzexulotirojema.pdfIn PDF document text
    • https://pensiuneavalentina.ro/app/webroot/file/7569007014.pdfIn PDF document text
    • http://www.tributosantafesinos.com.ar/admin/kcfinder/upload/files/nubir.pdfIn PDF document text
    • http://www.nnlb.com.np/demo/public/ckeditor/kcfinder/upload/files/9383075938.pdfIn PDF document text
    • https://milkywayads.com/webroot/img/files/71899114475.pdfIn PDF document text
    • https://grafconsulting.pl/Upload/file/sijapirikawusovuzesat.pdfIn PDF document text
    • http://julianina.dk/upload/file/85005602552.pdfIn PDF document text
    • http://ophirtonhotel.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/16221cab481a19---19838835214.pdfIn PDF document text
    • http://depcip.com/app/views/panel/ckfinder/userfiles/files/jasonodipe.pdfIn PDF document text
    • https://ragaz.co.za/XSRYdR1H?utm_term=free+fonts+online+withoutPDF link annotation
    • http://onelove.cz/file/13305004890.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
    +3 more URL(s)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0006cb48.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6CB48 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9
font_01_sfnt_off0006e26a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6E26A 10312 bytes
SHA-256: 6f1fd168687ca16579b15fd9967948d41911f1b47e5dab52213cef07e3a2d6ff
font_02_sfnt_off0006f9a3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6F9A3 17860 bytes
SHA-256: 189ade0e268daba5e20b01beed334a0808ebfa26bb357f0e8e6b427112c8d8c2