Malicious PDF — malware analysis report

Static analysis result for SHA-256 5d3004f9333045d0…

MALICIOUS

PDF

341.0 KB Created: 2022-03-20 05:05:36 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-05-16
MD5: f6bd824b9cef1b7d4359edadcbbbe55f SHA-1: 18aa704384ee548ae30a7ebd9d28dcfdc901730e SHA-256: 5d3004f9333045d008ccc708f731ccf088c31e452aba60ef1c40724e02c60699
166 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.7355

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://fecuq.co.za/XSRYdR1H?utm_term=aula+internacional+1+ejercicios+pdf PDF link annotation
    • https://gibidesign.com/fckfiles/file/97868478596.pdfIn PDF document text
    • http://mastersnab.pro/upload/files/fafewumataletodum.pdfIn PDF document text
    • http://wuyioutdoor.com/userfiles/file/33362508868.pdfIn PDF document text
    • http://lifecare4all.com/upload/files/zomexupivapovuxexamax.pdfIn PDF document text
    • https://spherule.org/wp-content/plugins/super-forms/uploads/php/files/818687082a7a99f4e1a621df032dc0a4/81667876057.pdfIn PDF document text
    • http://columb-sklep.pl/userfiles/file/87310008038.pdfIn PDF document text
    • http://www.bongbansaigon.com/uploads/files/lademajazonod.pdfIn PDF document text
    • http://nayyaralidada.com/alpha/ckfinder/userfiles/files/nesejazugu.pdfIn PDF document text
    • http://theopenhouseclub.com/wp-content/plugins/super-forms/uploads/php/files/7b2adc8564f4bf048daa9561c38c095a/babesutuwe.pdfIn PDF document text
    • https://wilgekrans.com/admin/user_files/files/zejudumogitedafed.pdfIn PDF document text
    • http://xn--80adpfaaeictf0c6c7i.xn--p1ai/public/file/wulal.pdfIn PDF document text
    • http://seanmore.com/userData/board/file/tejopedifevufevarat.pdfIn PDF document text
    • https://bentonhomebuilders.com/kcfinder/notilejawonut.pdfIn PDF document text
    • https://www.chinacimctrailer.com/wp-content/plugins/super-forms/uploads/php/files/743f89ea2b4c8e2030fe14648e14d939/66097583993.pdfIn PDF document text
    • https://kadet-ck.cz/pic/file/bilek.pdfIn PDF document text
    • https://www.edutechusa.com/wp-content/plugins/formcraft/file-upload/server/content/files/161f9ba56f03fe---34786322025.pdfIn PDF document text
    • https://imapcb.org/wp-content/plugins/super-forms/uploads/php/files/d73b30c2f1d8415cf3fac236a39f4b68/finotegepa.pdfIn PDF document text
    • http://healthmindsacademy.com/admin/ckeditor/kcfinder/upload/files/88456187450.pdfIn PDF document text
    • http://johnledesma.com/userfiles/file/99128406182.pdfIn PDF document text
    • https://marwaautorepair.com/nbloom/fckuploads/file/92267200435.pdfIn PDF document text
    • http://databaze.glaukom.cz/upload/files/29884962942.pdfIn PDF document text
    • https://nomortiga.com/contents/files/ludabedaxavubiguwe.pdfIn PDF document text
    • http://www.psstrecno.sk/wp-content/plugins/formcraft/file-upload/server/content/files/16215879f4e43c---32683226137.pdfIn PDF document text
    • http://bulk-supplies.com/userfiles/files/63436036280.pdfIn PDF document text
    • http://www.evisiontiendaonline.com/ckfinder/userfiles/files/runiporekobolapanazu.pdfIn PDF document text
    • http://ijiantu.com/filespath/files/20220224134935.pdfIn PDF document text
    • http://2478.ru/admin/ckfinder/userfiles/files/49300964426.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 extracted file (font_00_sfnt_off0004e4bf.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off0004e4bf.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0004e4bf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4E4BF 10876 bytes
SHA-256: 053e87cd93feea86c7fc73d5652ed4dfe0587982d3a2ff7a3815c455e61a82dd
font_01_sfnt_off0004fe06.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4FE06 18964 bytes
SHA-256: 84b4e2c5305ff12b9239e092f0525b0179f3534055df96845656b30b897b3e34
font_02_sfnt_off00052ea7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x52EA7 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9