Malicious PDF — malware analysis report

Static analysis result for SHA-256 191041e71ac7fc15…

MALICIOUS

PDF

334.3 KB Created: 2021-12-23 23:58:29 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-22
MD5: 1cb6da4e3d622ec9b3cc8a8ec8bbcfcc SHA-1: b66489bf25ae04eeab68d4850a43b4bf89468f07 SHA-256: 191041e71ac7fc15c37d9b77790d0719acf3975c63b2e02c2a5774c9a357bed7
174 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.6763

Heuristics 7

  • 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.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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://ketchas.ru/uplcv?utm_term=cover+letter+templates+ireland PDF link annotation
    • https://theshairpodcast.com/wp-content/plugins/super-forms/uploads/php/files/b24d7353310e47ffd598d0db4e37c1ee/julamuravuponananajoserop.pdfIn PDF document text
    • http://besttailor.info/ckfinder/userfiles/files/53121902334.pdfIn PDF document text
    • https://securitydm.eu/slicice/file/42842200179.pdfIn PDF document text
    • https://www.hit-education.com/wp-content/plugins/super-forms/uploads/php/files/b6na4eu5l2tjoobeiu73bdpgrg/29837102553.pdfIn PDF document text
    • http://bkdesign.ee/userfiles/file/94673920136.pdfIn PDF document text
    • https://drddvichitra.com/userfiles/file/fewolisesafikozi.pdfIn PDF document text
    • https://familienbilstrup.dk/userfiles/file/tetutavutixuxikoku.pdfIn PDF document text
    • http://labuchedeberce.fr/userfiles/file/jowadusozabozakum.pdfIn PDF document text
    • http://alvasari.com/wp-content/plugins/formcraft/file-upload/server/content/files/16191783c3cc8d---19982060525.pdfIn PDF document text
    • https://eijo.in/ckfinder/userfiles/files/26128899079.pdfIn PDF document text
    • http://aliancegroup.su/wp-content/plugins/formcraft/file-upload/server/content/files/161ab38f20cbb4---duwotovitemijonosopoma.pdfIn PDF document text
    • https://federazionespeleologicasarda.it/userfiles/file/46229667745.pdfIn PDF document text
    • http://vakantie-noordlimburg.nl/ckfinder/userfiles/files/labipixo.pdfIn PDF document text
    • https://gpuhub.net/wp-content/plugins/super-forms/uploads/php/files/h5q57pegfrcrv7eiah0o87oh7q/nekasabukemepize.pdfIn PDF document text
    • https://okinawa4d.com/contents/files/25808431869.pdfIn PDF document text
    • http://fecirturizm.com/resimler/files/wizumosovu.pdfIn PDF document text
    • http://knshzj.com/CKEdit/upload/files/16754304702.pdfIn PDF document text
    • http://perechen-jurnalov.ru/js/ckfinder/userfiles/files/80223158926.pdfIn PDF document text
    • http://slowjamsundays.com/wp-content/plugins/formcraft/file-upload/server/content/files/161408eec2406b---ponusuxunibidunaruwu.pdfIn PDF document text
    • http://www.mediacomriccione.it/wp-content/plugins/formcraft/file-upload/server/content/files/16147ab58845aa---58463572505.pdfIn PDF document text
    • https://coevent.ru/upload/files/tajaveribatisopiliziw.pdfIn PDF document text
    • http://medi-sen.com/files/files/xipakafamanaxanovaka.pdfIn PDF document text
    • http://agenziaimmobiliarecannavo.eu/userfiles/files/94785948333.pdfIn PDF document text
    • https://www.partyshuttlebus.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/161a139d57ace1---xubabif.pdfIn PDF document text
    • https://fluffy-chins.com/images/file/geruwaboju.pdfIn PDF document text
    • http://dreambeauty.kr/upload/fckeditor/file/fitemepexivapadakogovemad.pdfIn PDF document text
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/161573b809a698---zugupelodobavugajozaze.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_off0004cfb7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4CFB7 10652 bytes
SHA-256: d3d49aaf7f649b4a08b1dcaa09c70fc818f5422e9f0b36c2b1f28bab3455f097
font_01_sfnt_off0004e81f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4E81F 16416 bytes
SHA-256: cfa2c3fbce80cc5607e01af033b793d17c57c214fb1d96e845eedea48cccd336
font_02_sfnt_off0004febe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4FEBE 16804 bytes
SHA-256: 5a55cb95dcbd971f1b5934b25fa342b012de72251fbbda869d58769019d5c7a7