Malicious PDF — malware analysis report

Static analysis result for SHA-256 4507dede31dbfe62…

MALICIOUS

PDF

335.2 KB Created: 2022-03-14 10:21:00 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-04-25
MD5: d2a29126f09ce8c0ab0c0ab98a20da02 SHA-1: 972e289dd4081df1ac3e3ae73e14b6d3759e1a16 SHA-256: 4507dede31dbfe62f6184d9e7f552dd1ac3bda54bbc8b11e5538be686fadda61
166 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.7480

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://melnikhouse.com/userfiles/file/90424412885.pdf In PDF document text
    • https://buddhaart.in/userfiles/file/favirute.pdfIn PDF document text
    • http://www.enjoyvaltellina.it/admin/ckfinder/userfiles/files/disat.pdfIn PDF document text
    • http://komornikstargard.com/userfiles/file/9577129402.pdfIn PDF document text
    • http://4226080.kad.tw/kads/ckfinder/userfiles/files/duponanez.pdfIn PDF document text
    • https://ln80.cn/filespath/files/20220227134754.pdfIn PDF document text
    • http://juha.be/_files/file/xawokizerixomoxod.pdfIn PDF document text
    • https://www.akita-tourism.com/assets/admin/plugins/kcfinder/files/83146662667.pdfIn PDF document text
    • http://niktid.ru/userfiles/file/selesupubim.pdfIn PDF document text
    • http://em-mould.com/ckfinder/userfiles/files/75057984609.pdfIn PDF document text
    • https://www.ssemusic.com/kcfinder/upload/files/savuxusesimoxal.pdfIn PDF document text
    • https://viboot.traigiongthuha.com/ckfinder/userfiles/files/lonaxuj.pdfIn PDF document text
    • http://donovaly-ubytovanie-safran.sk/web/userfiles/file/wasunijuvokizilo.pdfIn PDF document text
    • https://www.landalastadservice.com/wp-content/plugins/formcraft/file-upload/server/content/files/162002e9f06c98---3111560767.pdfIn PDF document text
    • https://regenerativetherapyforpain.com/wp-content/plugins/super-forms/uploads/php/files/01c6ae9c1d76a01a7b67254de2477c0c/70840245503.pdfIn PDF document text
    • http://doggystylzgrooming.com/admin/photos/file/welawuwokifodeluxofer.pdfIn PDF document text
    • http://zlzljc.com/uploadfile/file///2022031303103963.pdfIn PDF document text
    • https://www.marmaclbd.com/assets/ckeditor/kcfinder/upload/files/34061069991.pdfIn PDF document text
    • http://contelex.it/userfiles/files/46798413055.pdfIn PDF document text
    • https://alaskaproauto.net/nbloom/fckuploads/file/ledibuvidazesugibalitafox.pdfIn PDF document text
    • http://ucg-eg.com/userfiles/file/84340245496.pdfIn PDF document text
    • https://hungarogun.hu/feltoltes/files/26394803352.pdfIn PDF document text
    • http://keyflounge.nl/userfiles/file/kufave.pdfIn PDF document text
    • http://www.champcaregivers.com/wp-content/plugins/formcraft/file-upload/server/content/files/1621ac70d7299c---99550531180.pdfIn PDF document text
    • http://winkeleninzundert.nl/uploadimages/files/kavodu.pdfIn PDF document text
    • http://archbot.pl/files/file/vurenadalerafotole.pdfIn PDF document text
    • https://vzglavniki.net/data/file/24250889318.pdfIn PDF document text
    • http://www.extoskoko.co.jp/js/kcfinder/upload/files/javiwoxenufixe.pdfIn PDF document text
    • http://elsped.hu/files/file/68669986952.pdfIn PDF document text
    • http://kukdae.com/files/fckeditor/file/58847458809.pdfIn PDF document text
    • http://haai.org/upload/file/69223704318.pdfIn PDF document text
    • http://tuclubcr.com/campannas/file/mevevedozufogi.pdfIn PDF document text
    • https://www.fuji-chem.co.jp/admin/js/kcfinder/upload/files/29925032346.pdfIn PDF document text
    • http://www.nanodrywash.com/wp-content/plugins/formcraft/file-upload/server/content/files/16222e585647b2---47446352007.pdfIn PDF document text
    • http://saludocupacionalpso.com/home/wp-content/plugins/formcraft/file-upload/server/content/files/1622511a32b205---80899168989.pdfIn PDF document text
    • https://yoyep.co.za/XSRYdR1H?utm_term=reddit+lol+tft+guidePDF 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_off0004d5cb.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off0004d5cb.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0004d5cb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4D5CB 16168 bytes
SHA-256: 38c15613ec6884919f447aa6182c51e862a115b6e42e17889a60d2838f122b4e
font_01_sfnt_off0004ff9d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4FF9D 10140 bytes
SHA-256: 5dcc795b42a0b902b7ebcd1eee820311130829e37cac534660d209e0cea2d35f
font_02_sfnt_off0005162e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5162E 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9