Malicious PDF — malware analysis report

Static analysis result for SHA-256 5d8093f92651607b…

MALICIOUS

PDF

74.1 KB Created: 2021-09-17 16:38:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-18
MD5: a5b1ddc6af9ff441ece4bb192360d287 SHA-1: 02ce0de2deaffb22bc4b215b718eacebd4cd844e SHA-256: 5d8093f92651607b9c955e87cc77b227074c5ff5ae76b771b6dbe9babbb7aa5e
156 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9908

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 http://navigator-nsk.ru/userfiles/file/xulirabagojopug.pdf In PDF document text
    • https://valeaflorilor.ro/img/uploads/file/neruvoseburope.pdfIn PDF document text
    • http://stavo-bazar.cz/userfiles/file/sexemewerevavadotezum.pdfIn PDF document text
    • http://partnercable.com/files/noful.pdfIn PDF document text
    • https://homecareangels.ca/files/files/files/rewesopewe.pdfIn PDF document text
    • http://receptlap.hu/files/42917303635.pdfIn PDF document text
    • http://wx-bm.cn/upload/ckimg/files/202109071854465694.pdfIn PDF document text
    • http://jshtextile.com/UserFiles/file///pojelasufizujupuwizixumil.pdfIn PDF document text
    • https://archcosmeticstudio.com.au/wp-content/plugins/super-forms/uploads/php/files/6d48b79ca35042cfc936749ea0109bc0/39036192751.pdfIn PDF document text
    • http://fuyu.010bi.com/ckfinder/userfiles/files/90150707631.pdfIn PDF document text
    • https://shopexpert.com/app/webroot/files/userfiles/files/64048952583.pdfIn PDF document text
    • http://artio.pl/files/files/78997441842.pdfIn PDF document text
    • http://amako-ra.com/wp-content/plugins/super-forms/uploads/php/files/88fcba0d09b1a8bb52a05b6dcef5cbd3/sapulade.pdfIn PDF document text
    • http://mspchicagolaw.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/likefolulul.pdfIn PDF document text
    • https://www.aukuras.org/ckfinder/userfiles/files/mopimim.pdfIn PDF document text
    • https://kfmaccounting.com/webroot/img/content/files/beporapaxapedon.pdfIn PDF document text
    • https://flcevent.fcu.edu.tw/plugin/ce1/ckfinder/userfiles/files/20210902054954.pdfIn PDF document text
    • http://china-zub.ru/userfiles/file/43663780654.pdfIn PDF document text
    • http://bienbao.net/uploads/files/buwelimifabid.pdfIn PDF document text
    • https://www.cdscabling.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/16136378b98aba---wepor.pdfIn PDF document text
    • http://aceonlinementors.com/userfiles/file/6266350588.pdfIn PDF document text
    • http://www.kickcommerce.com/userfiles/file/wajenato.pdfIn PDF document text
    • http://prestopc.it/upload/file/winovadilogodubov.pdfIn PDF document text
    • http://villaturri.com/wp-content/plugins/formcraft/file-upload/server/content/files/16134e9f114ed0---nadogawinemirutipimo.pdfIn PDF document text
    • https://vaitinhdien.com/app/webroot/upload/files/42568762033.pdfIn PDF document text
    • http://nc2e.fr/wp-content/plugins/formcraft/file-upload/server/content/files/1612fcb428fa48---91671491337.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/zMnd8XtcwSM/uplcv?utm_term=what+is+my+droidPDF 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_off0000beef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBEEF 10336 bytes
SHA-256: 4d45d7528764ea8230aa97b7043ec03fb56c10423b653648572afc75d17dc526
font_01_sfnt_off0000d649.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD649 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off0000ee5b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE5B 17060 bytes
SHA-256: 34ad6ac3b3b0920933ca73bc765df0c31e4311cb0e51bcf0850419dd2c7d0a51