Malicious PDF — malware analysis report

Static analysis result for SHA-256 4dedacafe81e35bc…

MALICIOUS

PDF

592.4 KB Created: 2022-03-08 06:24:10 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-04-30
MD5: a8849edca0c8c03b01ed391ff5887ccd SHA-1: 99be4c2f627162563a0590f478f9fd39ca159adb SHA-256: 4dedacafe81e35bc617fbef454c143762e519212b1df303d6266541342d4d3e3
136 Risk Score

Machine Learning

  • Nyx PDF Classifier suspicious score 0.4639

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://serting.eu/userfiles/files/98870681112.pdf In PDF document text
    • http://www.acs-pack.fr/kcfinder/upload/files/97540774862.pdfIn PDF document text
    • https://markzone.az/wp-content/plugins/super-forms/uploads/php/files/s8gp4j0psm4po0bkqvia5oj5qs/mipagozujafekedotanif.pdfIn PDF document text
    • http://weighlessthisyear.com/ckfinder/userfiles/files/losujosivatibevikipibom.pdfIn PDF document text
    • https://www.sinditamaraty.org.br/site/public/ckeditor/kcfinder/upload/files/mezamovokumirelemeruw.pdfIn PDF document text
    • http://nfrostov.ru/upload/files/laxorowafivevuwosiwudam.pdfIn PDF document text
    • https://shturnev.com/files/foFKED/file/82496495812.pdfIn PDF document text
    • http://etiquettes-adhesives-bobine.fr/kcfinder/upload/files/gonojabufupumixadotiwu.pdfIn PDF document text
    • http://nj-rshb.com/v15/Upload/file/2022312310449815.pdfIn PDF document text
    • https://laptopserwis.com/app/webroot/media/files/falogatagoleloxitimejo.pdfIn PDF document text
    • http://www.superprzygoda.pl/galeria/files/77427895620.pdfIn PDF document text
    • http://canxetaidientu.com/images/file/gapabubulegiju.pdfIn PDF document text
    • https://www.netcorp.hu/data/editorfile/41820153600.pdfIn PDF document text
    • http://www.myhhsi.com/wp-content/plugins/super-forms/uploads/php/files/44d50bd835d1328cdfed726486a929e0/jesena.pdfIn PDF document text
    • https://cananalimdar.com/wp-content/plugins/super-forms/uploads/php/files/4g1emej3vvcmglol83l7es6fsc/77279369248.pdfIn PDF document text
    • https://itracmediav5.com/ckfinder/userfiles/files/gakojap.pdfIn PDF document text
    • http://phunphu.com/userfiles/file/fosupunaxejusirisokox.pdfIn PDF document text
    • http://cttinteriery.cz/files/upload/files/94029084281.pdfIn PDF document text
    • http://keralastatetailorsassociation.com/userfiles/file/wilelejafakuvekaxonu.pdfIn PDF document text
    • http://dvere.eu/assets/ckeditor/kcfinder/upload/files/90846533109.pdfIn PDF document text
    • https://thebottombillion.com/business_school/uploads/file/mubem.pdfIn PDF document text
    • http://rigosarchitects.gr/userfiles/file/pudotufebuveveran.pdfIn PDF document text
    • http://dothimau.vn/kcfinder/upload/files/kimunukinuni.pdfIn PDF document text
    • http://nandnee.com/admin/ckeditor/kcfinder/upload/files/kobulabekuwod.pdfIn PDF document text
    • https://sharzh-ufa.ru/wp-content/plugins/super-forms/uploads/php/files/d6b1f443d3ba8f68885a6fbc6200bb80/13353818313.pdfIn PDF document text
    • http://auto-fiesta.ru/upload/files/sigenubetofomadalojap.pdfIn PDF document text
    • http://lichnyiybrand.ru/wp-content/plugins/formcraft/file-upload/server/content/files/1620373923ff9e---zajamalewisakopegukis.pdfIn PDF document text
    • http://kxqcgs.com/filespath/files/20220224215056.pdfIn PDF document text
    • https://limblength-sldf.fasamra.com/userfiles/file/nopivixa.pdfIn PDF document text
    • https://astdubai.co/userfiles/files/vatavajimaxo.pdfIn PDF document text
    • https://goez1.com/10005001208290177/ckfinder/userfiles/files/lonasavu.pdfIn PDF document text
    • https://kupro.bg/upload/wyswyg/files/gubowawelaxumadaj.pdfIn PDF document text
    • http://bright-inter.com/file_media/file_image/file/35813679619.pdfIn PDF document text
    • http://romengo.com/ckfinder/userfiles/files/49132688921.pdfIn PDF document text
    • https://loheb.co.za/XSRYdR1H?utm_term=k+means+clustering+algorithm+example+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_off0008d430.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off0008d430.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0008d430.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8D430 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9
font_01_sfnt_off0008eb4b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8EB4B 17016 bytes
SHA-256: 8c0a71ebd1814d5486aa2686cb31209eb842616073e5857aa09e525096fc7390
font_02_sfnt_off0009178d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9178D 11260 bytes
SHA-256: cfb175feb63e7b45919a032747b9705e394b8a21cd7288879aa4301dc135f3e2