Malicious PDF — malware analysis report

Static analysis result for SHA-256 72b40ee16ae602ac…

MALICIOUS

PDF

66.6 KB Created: 2021-11-09 02:33:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-28
MD5: fd002385f1e950c48d3062a2619f5fc2 SHA-1: d8bdba0b386c0dccd0ad9515f463c3c96d8bc905 SHA-256: 72b40ee16ae602ac38a1a357c14802f7c3d2860a49459a3973522895602e81cd
156 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9978

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
  • 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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. 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://volandovia.it/public/fileeditor/file/21874217605.pdf In PDF document text
    • http://av-jet.ru/userfiles/file/25822046986.pdfIn PDF document text
    • http://conkheror.com/ckfinder/userfiles/files/44953334198.pdfIn PDF document text
    • http://vladimir-kopilka.ru/sites/default/files/file/47226201507.pdfIn PDF document text
    • http://nprofit.hk/userfiles/14465628720.pdfIn PDF document text
    • http://www.tractortools.cz/ckfinder/userfiles/files/50719182501.pdfIn PDF document text
    • https://www.miotsukushi.or.jp/system/ckfinder/userfiles/files/57281102182.pdfIn PDF document text
    • http://lmtechsolution.com/userfiles/bewovasolitumi.pdfIn PDF document text
    • https://cashofferoregon.com/wp-content/plugins/formcraft/file-upload/server/content/files/1614d9a63755c5---4375502293.pdfIn PDF document text
    • https://www.urban-quartz.co.uk/wp-content/plugins/super-forms/uploads/php/files/1e503dbd06a7ddb1355af99120cc5e7a/56648914328.pdfIn PDF document text
    • https://tckontrola.hr/files/pozafugewopi.pdfIn PDF document text
    • http://makinsushi.com/uploads/files/63776168455.pdfIn PDF document text
    • http://dennehylaw.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/bilixajuwebew.pdfIn PDF document text
    • https://marcuspietrek.de/MARCUS/files/file/burotamekube.pdfIn PDF document text
    • http://jnmindia.com/outscapes/admin/ckeditor/uploads/ck/files/zulovuwefet.pdfIn PDF document text
    • https://christianklein.eu/Quansis/ckfinder/userfiles/files/50504280789.pdfIn PDF document text
    • https://art-gallery.mn/uploads/files/76850061572.pdfIn PDF document text
    • http://nuovartea.eu/userfiles/files/kawedumenuz.pdfIn PDF document text
    • http://pilatesmystyle.com/userfiles/files/69783220553.pdfIn PDF document text
    • http://es-umzuege-transporte.de/wp-content/plugins/super-forms/uploads/php/files/2efd2cea028e6fd61c2ef89e366ae092/maruwazisobovo.pdfIn PDF document text
    • https://sealskinz.ru/files/file/30673731901.pdfIn PDF document text
    • https://bccphil.paramedix.biz/uploadfiles/file/22884852295.pdfIn PDF document text
    • http://machulski.com/public/file/13113033966.pdfIn PDF document text
    • http://feedproxy.google.com/~r/Xvkpad/~3/oscUj7J0Gjw/uplcv?utm_term=icarus+and+daedalus+charactersPDF 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 PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000a391.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA391 16600 bytes
SHA-256: a3d50d1d126fe4369e0f1c7eb867e87539646b48c85eb05541a84661ab048e05
font_01_sfnt_off0000ce87.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCE87 10308 bytes
SHA-256: 82af5ccdaa85336ef8b513e068923b9af7bf7201411e5f5fec7a10ad086310b7
font_02_sfnt_off0000e5b7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE5B7 16540 bytes
SHA-256: 45015263e28dbf00792e0fa83ae0fb9123af5110209f191c00797c49350166ef