Malicious PDF — malware analysis report

Static analysis result for SHA-256 3bc2b31840456e63…

MALICIOUS

PDF

427.2 KB Created: 2022-02-03 09:26:56 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-05-20
MD5: 3a8d6c89cbff22b3092166c06506f14a SHA-1: f6065e6d6975594b1180c262abe89e0483f7862a SHA-256: 3bc2b31840456e630fc758a08bc9c4ab0245a741cd7530b814a850c97acc3c83
166 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.5334

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://oks.urmon.uz/kcfinder/upload/files/73338105341.pdf In PDF document text
    • https://dsodrecital.com/wp-content/plugins/formcraft/file-upload/server/content/files/161baa998011a2---81601572942.pdfIn PDF document text
    • http://richiefamilyreunion.com/clients/7/7d/7d03816b951c94fc7c065ced7c7ccdcd/File/sepawak.pdfIn PDF document text
    • http://apexnepaltravel.com/userfiles/file/33997116894.pdfIn PDF document text
    • http://jolanyee.com/upload/files/202110231206451365.pdfIn PDF document text
    • http://erpsamik.com/ckfinder/userfiles/files/regebuzupufesu.pdfIn PDF document text
    • http://banlinhkienlaptop.com/userfiles/file/50555039891.pdfIn PDF document text
    • http://z-i-f.ru/userfiles/file/kezadi.pdfIn PDF document text
    • http://tallygroupkwt.com/uploads/file/73658623523.pdfIn PDF document text
    • http://aviatechinform.ru/sadm_files/5496307339.pdfIn PDF document text
    • http://andreagarciam.com/wp-content/plugins/formcraft/file-upload/server/content/files/161ab14763f0d3---norekegubojivili.pdfIn PDF document text
    • http://ahknchem.com/upload/files/29828514722.pdfIn PDF document text
    • http://www.ettermanenterprises.com/ckfinder/userfiles/files/33783547372.pdfIn PDF document text
    • https://iuoshili.com/upload/users/files/navasibosolopaxizufimati.pdfIn PDF document text
    • https://www.ccps.mx/wp-content/plugins/super-forms/uploads/php/files/da85e23eeb8be8670971916de8427d39/fopavazaletegizinax.pdfIn PDF document text
    • https://advicezone.org.uk/wp-content/plugins/super-forms/uploads/php/files/63ghk4fgajsp45bfck1fefc0tm/duzuxukagavovawali.pdfIn PDF document text
    • http://wangguanhardware.com/userfiles/file/27223126430.pdfIn PDF document text
    • https://interstudy.net/userfiles/file/20191027761.pdfIn PDF document text
    • https://kozhikodedeaf.org/admin/my_files/file/82997960045.pdfIn PDF document text
    • http://kapsalonindex.nl/images/uploads/17163584489.pdfIn PDF document text
    • http://key-pro.jp/kcfinder/upload/files/pafemedowuloraboteku.pdfIn PDF document text
    • http://gagutp.com/sa_upload/userfiles/file/20210707192726.pdfIn PDF document text
    • https://icaiaa21.scrs.in/kcfinder/upload/files/fazunomarukaradudenud.pdfIn PDF document text
    • http://nemeckystrakac.sk/editor_uploads/files/gomaluji.pdfIn PDF document text
    • http://www.w.radeton.cz/ckfinder/userfiles/files/59546231856.pdfIn PDF document text
    • http://kaufdeinauto.de/wp-content/plugins/formcraft/file-upload/server/content/files/161c55fd0987b0---69120548985.pdfIn PDF document text
    • http://longarmquiltacademy.net/fckeditor/userfiles/file/rorejatud.pdfIn PDF document text
    • http://tlxzkj.com/uploads/file/131213341750.pdfIn PDF document text
    • http://dieterheich.de/images/uploads/file/koloseragesu.pdfIn PDF document text
    • http://amadpich.com/userfiles/file/7794675808.pdfIn PDF document text
    • https://krantiservice.com/ckfinder/userfiles/files/53785695687.pdfIn PDF document text
    • http://fastcredit.ge/userfiles/file/6908474485.pdfIn PDF document text
    • http://tpdw.pl/userfiles/file/ziwavizoz.pdfIn PDF document text
    • https://jurvamartin.com/userfiles/file/devavetefajutajivug.pdfIn PDF document text
    • http://medicare-darmstadt.de/bilder/UserImages/file/96314634417.pdfIn PDF document text
    • https://yoyep.co.za/XSRYdR1H?utm_term=way+down+hadestown+trombone+sheet+musicPDF 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_off00063f87.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off00063f87.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00063f87.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x63F87 17216 bytes
SHA-256: 266a9be6bb0a58474c789812375a28edc717cf6ae6d88842fceae3782ad5e740
font_01_sfnt_off00066cbf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x66CBF 11020 bytes
SHA-256: 1c941317e4c26e233e2cc4680a428b47d0a86fa2468cd4dba684b5d81a662e92
font_02_sfnt_off00068642.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x68642 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9