Malicious PDF — malware analysis report

Static analysis result for SHA-256 a8bb4ce34348b947…

MALICIOUS

PDF

350.9 KB Created: 2022-03-07 05:15:02 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-04-06
MD5: 0ba54360a2dc97f9e20d0a8f2bc8e3ac SHA-1: 6970a05d2226d21f9b05df917d037409d2ea7f6a SHA-256: a8bb4ce34348b947dc353aae3dbb91bdb020e0e86a6f5658576a8fa46c1d898a
166 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.5879

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://wirut.co.za/XSRYdR1H?utm_term=wow+classic+class+guide+mage PDF link annotation
    • http://www.vitrierbxl.be/wp-content/plugins/formcraft/file-upload/server/content/files/1620d952c86150---wabononepodusikonopozida.pdfIn PDF document text
    • https://isystem.hu/userfiles/file/ruxijafawanilumabiw.pdfIn PDF document text
    • http://hungbuloon.com/media/ftp/file/43983123474.pdfIn PDF document text
    • http://www.benvenutialmare.com/wp-content/plugins/formcraft/file-upload/server/content/files/161fad6b8ed5b4---68901401658.pdfIn PDF document text
    • http://himalayakebab.com/shipinc/userfiles/files/38541403942.pdfIn PDF document text
    • http://koovappadyscb.com/ckfinder/userfiles/files/faxub.pdfIn PDF document text
    • https://perfecthospitals.org/FCKeditor/file/68193120381.pdfIn PDF document text
    • http://diveblubari.it/custom/archivio/files/5087685571.pdfIn PDF document text
    • http://redskap.ru/userfiles/file/16792573877.pdfIn PDF document text
    • https://i-triada.net/upload/files/nopepawabapajixeguzus.pdfIn PDF document text
    • http://andersen-racing.com/pictures/editor/files/kuwusizufodewinadutani.pdfIn PDF document text
    • https://get-insurance.in/ckfinder/userfiles/files/68915961664.pdfIn PDF document text
    • http://vangphutai.com/images/uploads/files/bufev.pdfIn PDF document text
    • http://www.studioamorosi.com/notizie/allegati/7908274199.pdfIn PDF document text
    • http://techbico.vn/uploads/image/files/xifozukigiwo.pdfIn PDF document text
    • http://www.varnamonarradio.se/admin/kcfinder/upload/files/76674090073.pdfIn PDF document text
    • http://vinczeandlaszlo.com/upload/36552156704.pdfIn PDF document text
    • http://julieesteban.com/wp-content/plugins/formcraft/file-upload/server/content/files/16210de5d7ee86---17591426594.pdfIn PDF document text
    • http://ajeah-intl.org/fck_image/file/29348040719.pdfIn PDF document text
    • https://chiuman-hk.com/images/file/80808632701.pdfIn PDF document text
    • http://studiophotosfashion.it/userfiles/files/mefabofidomupotofakedabeb.pdfIn PDF document text
    • http://tycoonmedical.com/userfiles/file/tozoxetatuvotigoret.pdfIn PDF document text
    • https://webdatedepot.com/userfiles/file/25831846851.pdfIn PDF document text
    • http://hotechike.com/files/files/vemufurovepitaxex.pdfIn PDF document text
    • http://gsoam.ge/wp-content/plugins/formcraft/file-upload/server/content/files/1621d6e47f13ce---81569742552.pdfIn PDF document text
    • https://www.ekometal.com/kcfinder/upload/files/74946756775.pdfIn PDF document text
    • http://pestaurace.sk/upload/files/wobajapevawipoj.pdfIn PDF document text
    • https://basundharamart.com/userfiles/file/41531287413.pdfIn PDF document text
    • https://lifeskills4you.com/ckfinder/userfiles/files/70417274878.pdfIn PDF document text
    • https://e-s-c.fr/lib/ckeditor/kcfinder/upload/files/1040878039.pdfIn PDF document text
    • https://globalybm.com/ckfinder/userfiles/files/1646562548.pdfIn PDF document text
    • http://dedanskecasinoer.dk/userfiles/file/zirumipizabujeb.pdfIn PDF document text
    • http://pentas.eu/userfiles/file/18186092570.pdfIn PDF document text
    • https://sunsetlearningcenter.com/userfiles/file/bebivefik.pdfIn PDF document text
    • http://rediger.vammenkro.dk/upload/files/waviviput.pdfIn PDF document text
    • http://kammatrans.com/userfiles/files/nijulizofifalexapuzuxe.pdfIn PDF document text
    • http://kcwoman.medsoft.kr/pds/userfiles/files/20456649009.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_off00050ccc.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off00050ccc.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00050ccc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x50CCC 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9
font_01_sfnt_off000523e7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x523E7 18408 bytes
SHA-256: c506140442e1779dbbeec496cdddc47d1a3ef182fb8f3b19d0131f8e6da03c89
font_02_sfnt_off000553de.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x553DE 10588 bytes
SHA-256: c99a2858f96da726a80c7ffa42950e8c56de6776d944d55dd54ca404ed714cfc