Malicious PDF — malware analysis report

Static analysis result for SHA-256 8478ae15879f2361…

MALICIOUS

PDF

237.3 KB Created: 2022-03-15 18:21:26 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-04-05
MD5: 591d13c3f11a5ba0205c68e61025ce55 SHA-1: 2e4c92231919ccb437f2beb082c45e0f00b0c4d9 SHA-256: 8478ae15879f2361369d4e69f06ac9e42449c7e8d35904763c3f098016355d13
166 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.7434

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 http://invenger.net/admin/ckeditor/kcfinder/upload/files/40526076928.pdf In PDF document text
    • http://micdelhi.in/userfiles/file/napuvixugarogobedipu.pdfIn PDF document text
    • https://consurs.ro/ckfinder/userfiles/files/93785336401.pdfIn PDF document text
    • https://www.acv-verdun.fr/kcfinder/upload/files/68551997657.pdfIn PDF document text
    • http://spasm-sympo.org/uploads/ck/admin/files/60959932571.pdfIn PDF document text
    • http://schouteninterieurwerk.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1620580b305539---46420012888.pdfIn PDF document text
    • http://maquetland.com/v2/images_articles2/files/wawekaxi.pdfIn PDF document text
    • http://www.corazondelsol.es/ckfinder/userfiles/files/35447739387.pdfIn PDF document text
    • http://miyisz.com/mingyi/images/userfiles/file/61596645063.pdfIn PDF document text
    • https://tourpon.kr/FileData/ckfinder/files/20220201_15ED6EFC0468EFFA.pdfIn PDF document text
    • http://whuntex.info/userfiles/file/64701568954.pdfIn PDF document text
    • https://actorconseil.com/files/file/sufaritu.pdfIn PDF document text
    • https://piphoto.tw/uploads/files/202202140448277231.pdfIn PDF document text
    • https://tortugafilms.com/adminfiles/file/65040672884.pdfIn PDF document text
    • http://interface-referencement.com/userfiles/file/75578748107.pdfIn PDF document text
    • https://leg-vein.jp/kcfinder/upload/files/33175652822.pdfIn PDF document text
    • http://www.absolutecateringla.com/wp-content/plugins/formcraft/file-upload/server/content/files/162149892f3b17---zowas.pdfIn PDF document text
    • http://abcbyspu.net/ckfinder/images_store/files/bemipisetapew.pdfIn PDF document text
    • http://opusbiz.kr/data/editor/file/5655813506228cc99cdac0.pdfIn PDF document text
    • http://safiorida.nl/operatori/userfiles/file/rerorigegewupanonijofewug.pdfIn PDF document text
    • https://premiersuli.hu/files/files/99881293771.pdfIn PDF document text
    • https://www.ediliziaindustriale.com/wp-content/plugins/formcraft/file-upload/server/content/files/1621cb33847c3a---bejemexinajejefenad.pdfIn PDF document text
    • http://www.stratcareerservices.com/wp-content/plugins/formcraft/file-upload/server/content/files/16216f4b002b95---56190289319.pdfIn PDF document text
    • http://thibidi.vinadesign.info/uploads/images/files/19248201927.pdfIn PDF document text
    • https://caffetravel.travelshops.pl/userfiles/file/sapomonemetu.pdfIn PDF document text
    • http://wmsone.com/eimages/file/bakoj.pdfIn PDF document text
    • http://oguraclutch.cn/uploadfile/files/62612292821.pdfIn PDF document text
    • http://www.aportecnica.com/imagenes/editor/file/27446606149.pdfIn PDF document text
    • https://konkrea.be/uploads/files/36231523009.pdfIn PDF document text
    • http://pvvc.cz/files/96816958740.pdfIn PDF document text
    • https://ercrs.org/wp-content/plugins/super-forms/uploads/php/files/4044qpes5f0r0ifgvg87tfpfnb/jamitaz.pdfIn PDF document text
    • https://cafij.co.za/XSRYdR1H?utm_term=vertebrates+and+invertebrates+worksheets+pdf+grade+6PDF 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 extracted file (font_00_sfnt_off000345f2.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off000345f2.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000345f2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x345F2 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9
font_01_sfnt_off00035d0d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x35D0D 17660 bytes
SHA-256: f70064f02c18f6538a26ee2152a5e026087c7e2ce5dbb179fb9b1ceac0106be1
font_02_sfnt_off00038b19.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x38B19 11252 bytes
SHA-256: cee8ca626a406668d4b1d87f2972bf9e2808b6b22ab97dac0854e4b5cfb1846c