Malicious PDF — malware analysis report

Static analysis result for SHA-256 c839043cfcb400ca…

MALICIOUS

PDF

382.2 KB Created: 2022-05-17 05:13:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-05-02
MD5: 4a48ced184ccad57adec4586011ce534 SHA-1: 08e74d01532c2440e0be6ec3b75d6f798d8a6828 SHA-256: c839043cfcb400cabc694dc13108de1a7884d862de54c19534c4ea294de7e7d4
166 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.6110

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://festival.bg/fckeditorfiles/file/jodewabijifulato.pdf In PDF document text
    • https://dobosugyvedkecskemet.hu/userfiles/file/71299766308.pdfIn PDF document text
    • http://www.sbawerribee.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/16235b9a15da15---35637674309.pdfIn PDF document text
    • http://az4group.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1620e02598d9de---93123306889.pdfIn PDF document text
    • https://kesevaze.weebly.com/uploads/1/3/1/3/131383297/melojaxevo.pdfIn PDF document text
    • http://seksdagen.nl/userfiles/file/mawas.pdfIn PDF document text
    • http://noahmission.org/dataroom/file/rigirolukerowurewa.pdfIn PDF document text
    • http://caacoding.net/wp-content/plugins/formcraft/file-upload/server/content/files/1626084f2771bc---38481153108.pdfIn PDF document text
    • http://www.tamar.org.br/fotos_news/files/42772971667.pdfIn PDF document text
    • http://oprandi.it/userfiles/files/79379718513.pdfIn PDF document text
    • http://teedinmaesai.com/user_img/file/ronezajubo.pdfIn PDF document text
    • https://evocative.ru/wp-content/plugins/formcraft/file-upload/server/content/files/162292ec705b3f---dinorojutewul.pdfIn PDF document text
    • http://soloparamideco.com/js/new/fckeditor/userfiles/file/38043591173.pdfIn PDF document text
    • http://entone.es/wp-content/plugins/super-forms/uploads/php/files/a39e8cf4ea06d9abe4d66e1a510e9f04/24581990140.pdfIn PDF document text
    • http://phuketdriveschool.com/userfiles/file/rafotejin.pdfIn PDF document text
    • http://www.abcklima.hu/data/editorfile/ropawe.pdfIn PDF document text
    • http://nhatminhtrading.vn/app/webroot/uploads/files/terevetifemiwapubivifem.pdfIn PDF document text
    • https://arbormaster.us/uploads/files/74955655528.pdfIn PDF document text
    • http://perfekttorun.pl/pliki/jovufizimafotaj.pdfIn PDF document text
    • http://hulstcustoms.ru/uploads/files/donigipizeropebure.pdfIn PDF document text
    • http://ekoelprom.pl/public/images/editor/file/8625039384.pdfIn PDF document text
    • https://mejibafizafev.weebly.com/uploads/1/3/4/0/134042836/23d60d0e8e92.pdfIn PDF document text
    • http://hadjtaharsteel.com/app/webroot/js/kcfinder/upload/files/nagar.pdfIn PDF document text
    • http://www.fuchingrading.com/upload/file/nigakozesipozokurujonawe.pdfIn PDF document text
    • http://www.aqua-systems.com.tw/ckeditor/kcfinder/upload/files/togusugegurapate.pdfIn PDF document text
    • http://bldc.aspbae.org/userfiles/file/72157972983.pdfIn PDF document text
    • https://clubforeducation.com/FCKeditor/userfiles/file/6004938143.pdfIn PDF document text
    • https://bistroestrada.com/images/files/jaxuze.pdfIn PDF document text
    • https://typeone.com.my/ckfinder/userfiles/files/juzusobo.pdfIn PDF document text
    • https://vejexuwelukilik.weebly.com/uploads/1/3/5/3/135340180/miwujozenevosolujena.pdfIn PDF document text
    • https://nedetuvozuwe.weebly.com/uploads/1/3/4/6/134699612/wonakuxudikes.pdfIn PDF document text
    • http://criollo-cocoa.com/userfiles/file/xapowidega.pdfIn PDF document text
    • http://ambartakip.net/belgeler/file/varigetuz.pdfIn PDF document text
    • https://kovepezerolozu.weebly.com/uploads/1/3/1/4/131483153/3236388.pdfIn PDF document text
    • https://godahoian.com/app/webroot/upload/files/33647734277.pdfIn PDF document text
    • http://gulfapex.com/uploads/file/24686874329.pdfIn PDF document text
    • https://dbhattacharjee.com/ckfinder/userfiles/files/47564947779.pdfIn PDF document text
    • https://wirut.co.za/XSRYdR1H?utm_term=icao+annex+10+pdf+download+pdf+download+full+formPDF 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_off0005840e.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off0005840e.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0005840e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5840E 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off00059c20.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x59C20 19668 bytes
SHA-256: e69114f47feed4aaf1ddc2b9005625cf128939fa3056ff111627f2cad481b8cf
font_02_sfnt_off0005cef2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5CEF2 10836 bytes
SHA-256: 72a9b6f3baccce8a70c4edee797d01659e41dd4f9bd01aefbc8937be22b125fa