Malicious PDF — malware analysis report

Static analysis result for SHA-256 de4aef1d027c1458…

MALICIOUS

PDF

532.9 KB Created: 2022-03-02 08:06:40 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-04-04
MD5: 3c7fbcd7f6c43e3e7283ac596cdfb53b SHA-1: 1feb4f5715f1670bc26a7a6ca863b976a5f69043 SHA-256: de4aef1d027c145863d2bc748e19693f6c07d3dd65d1296d292538aaa4e64434
136 Risk Score

Machine Learning

  • Nyx PDF Classifier suspicious score 0.4735

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://yubit.co.za/XSRYdR1H?utm_term=work+plan+template+google+sheets PDF link annotation
    • https://okazdedziecko.pl/_files/Media/file/jejipukapuxukanomupimijo.pdfIn PDF document text
    • https://hotelritariccione.it/wp-content/plugins/formcraft/file-upload/server/content/files/16204e1a32ed01---63025531126.pdfIn PDF document text
    • http://bionazorat.uznature.uz/userfiles/file/xonuwuviwowerefizogesax.pdfIn PDF document text
    • http://clerus.hu/files/file/jomemaburegirevu.pdfIn PDF document text
    • https://tch.lu/files/files/kodewejuget.pdfIn PDF document text
    • http://aftckwt.com/uploads/file/lukuzasaja.pdfIn PDF document text
    • https://www.ideaklinik.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/162057a3c34fd5---zodujitopid.pdfIn PDF document text
    • https://pavaniautismschools.com/wp-content/plugins/super-forms/uploads/php/files/gsjqdasolnc8i0tgcoamv3kiem/zisudomoponuvufupisipu.pdfIn PDF document text
    • https://sinditamaraty.org.br/site/public/ckeditor/kcfinder/upload/files/57096457842.pdfIn PDF document text
    • http://beccaro.it/userfiles/files/sizidatulobus.pdfIn PDF document text
    • https://urbanlivin.lu/userfiles/files/78050329434.pdfIn PDF document text
    • http://iiiemjobs.com/FCK_Editor_Images/files/zebezugovetidob.pdfIn PDF document text
    • https://luquluqu.org/public/assets/js/kcfinder/upload/files/fetegotumatexeruleranew.pdfIn PDF document text
    • http://cattaneoarchitetti.it/userfiles/files/voremibuzof.pdfIn PDF document text
    • http://back2wood.de/userfiles/file/muxonupupulugirexovobije.pdfIn PDF document text
    • http://www.sircom.org.br/tools/includes/kcfinder/upload/files/77758083549.pdfIn PDF document text
    • http://ruresept.ru/files/file/6036872927.pdfIn PDF document text
    • https://excore.hu/ckfinder/userfiles/files/geraluvemufom.pdfIn PDF document text
    • http://autolubitel-irk.ru/userfiles/file/88596605409.pdfIn PDF document text
    • http://flamefitnessstudio.com/cewit/images/file/jedapizarojolaxono.pdfIn PDF document text
    • https://maintogelonline2.org/contents/files/luxekazuf.pdfIn PDF document text
    • https://ssp.by/var/upload/devuvexasebonuwikuvowume.pdfIn PDF document text
    • http://www.holderit.com/wp-content/plugins/formcraft/file-upload/server/content/files/1621b18e37e300---laxoze.pdfIn PDF document text
    • http://sarvodurys.com/userfiles/file/guzuwotanosavus.pdfIn PDF document text
    • http://www.its-dph.cz/admin/fckeditor/editor/userfiles/file/wodegadipewilikojafexu.pdfIn PDF document text
    • http://go-trec.com/wp-content/plugins/super-forms/uploads/php/files/ks2q9aavle9inlo6cn2bu6irif/22500514382.pdfIn PDF document text
    • https://nawaasha.org/userfiles/file/8674784975.pdfIn PDF document text
    • https://xn----8sbcehyodmtf1czh.xn--p1ai/userfiles/file/tugupowininutefijipot.pdfIn PDF document text
    • http://www.absolutecateringla.com/wp-content/plugins/formcraft/file-upload/server/content/files/1621ade17ce904---43570611226.pdfIn PDF document text
    • http://apricomm.com/userData/board/file/58675931432.pdfIn PDF document text
    • http://yeke.com.tr/public/kcfinder/upload/files/vadubisuteponufu.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_off0007e4c5.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off0007e4c5.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0007e4c5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7E4C5 10692 bytes
SHA-256: 17b0ca7834ec376223cd82b21967de2c0260a85363bd025d8ba8a935fab001cf
font_01_sfnt_off0007fd26.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7FD26 18176 bytes
SHA-256: 61b8069dc20f227086c47c82eeb5f9f559f7e0aa335bdae162528698316835c5
font_02_sfnt_off00082cbb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x82CBB 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9