Malicious PDF — malware analysis report

Static analysis result for SHA-256 2b6533767a0808c8…

MALICIOUS

PDF

88.0 KB Created: 2021-10-06 08:26:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-17
MD5: 9edc4136c92bcd5a2e6be86164f47d3f SHA-1: 4f4b0e8423ff5353fd26243ec190ad0c16e5e9c8 SHA-256: 2b6533767a0808c8166e23fdd408c9b24544cbce1f7496cd287bfd6caac2f06d
156 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9942

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://pistant.ru/uplcv?utm_term=frequency+wavelength+relationship PDF link annotation
    • http://dnestrovsk.es-pmr.com/constructor/dnestrovsk/ckfinder/userfiles/files/kavovikomuzavavoxupakitif.pdfIn PDF document text
    • https://labelmarket.pl/data/file/batadelinozogixotaki.pdfIn PDF document text
    • http://project-lovcen.me/userfiles/file/72622622643.pdfIn PDF document text
    • https://zifu-tech.com/app/webroot/userfiles/files/57570334169.pdfIn PDF document text
    • http://ysenb.kr/board/file/editor/file/5690858274.pdfIn PDF document text
    • http://herodumpsterrental.com/wp-content/plugins/super-forms/uploads/php/files/60b1f2acd9620d77444789a9b8e4518e/84112826395.pdfIn PDF document text
    • https://novahealthclinic.ca/userfiles/file/fudumiraj.pdfIn PDF document text
    • https://kme.pl/global/app/webroot/uploads/file/16305842501439.pdfIn PDF document text
    • https://ourlady-schools2.com/userfiles/files/93970455981.pdfIn PDF document text
    • http://nollve.com/img/editor/image/file/somupaxuwu.pdfIn PDF document text
    • https://gmonlinestore.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613ca2362f16e---velixuzaxarenesegefazav.pdfIn PDF document text
    • http://brilliantsolarpaneling.com/userfiles/file/23119299020.pdfIn PDF document text
    • https://netron.pt/app/webroot/media/files/38619577033.pdfIn PDF document text
    • http://allegroescrow.com/wp-content/plugins/formcraft/file-upload/server/content/files/161584f876a0bb---86393257314.pdfIn PDF document text
    • http://entryexpress.online/chapter_images/files/lajasazutej.pdfIn PDF document text
    • http://adas-muko.pl/photo/file/85976358410.pdfIn PDF document text
    • https://popcouncilinstitute.org/wp-content/plugins/super-forms/uploads/php/files/7d809bbc7598774273cf80c13adac6fd/27100112886.pdfIn PDF document text
    • https://garraldaarquitectura.com/garralda_userfiles/files/kukaxogudufoxasise.pdfIn PDF document text
    • https://8cj2aja7-8mxb.com/contents/files/38763261387.pdfIn PDF document text
    • http://konditsionery-odincovo.ru/upload_picture/file/97337278325.pdfIn PDF document text
    • http://hermanosgolbano.com/admin/fckeditor/editor/filemanager/connectors/phpfile/67485864713.pdfIn PDF document text
    • http://henskeschildersbedrijf.nl/upload/positifabalepimelivitisad.pdfIn PDF document text
    • http://carrozzeriabosini.net/userfiles/files/dijixom.pdfIn PDF document text
    • http://podarox.ru/public/files/gosokaju.pdfIn PDF document text
    • http://principessavencanice.com/wp-content/plugins/formcraft/file-upload/server/content/files/1612f34df586a5---14780721090.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 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_off0000ec06.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC06 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0001041d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1041D 11140 bytes
SHA-256: cecbd80358817498b8105f16c6892fdda007705717ee5e43445395dc89a1da39
font_02_sfnt_off00011dcf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11DCF 20388 bytes
SHA-256: 2b63d4d692d77b3953da8ecd7abffea3966adfc76a626dede69dd836f67ad3ca