Malicious PDF — malware analysis report

Static analysis result for SHA-256 25c6a8b982b8db8f…

MALICIOUS

PDF

330.7 KB Created: 2022-03-21 17:59:44 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-04-02
MD5: 9f405b18c3e9e8eaf73acd8739de2e71 SHA-1: 4de4d911c895d267cbc05f6d77363b2bf8f75d39 SHA-256: 25c6a8b982b8db8fb2529f95e792d588bf2e9b3fa3991a18514d9966c942bd9d
191 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.7074

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.
  • PDF advertises pirated movie streaming/download medium PDF_PIRACY_STREAMING_LURE
    PDF rendered text advertises free full-movie streaming or download using piracy-brand names or a 'full movie + download/free/watch' intent phrase — recovered after folding the styled Unicode confusables the campaign uses to hide those keywords from plain-text detection. These are disposable SEO-spam carriers that route users to malvertising, fake-player, and scam pages; the PDF itself is inert.
  • 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://twojeloty.pl/admin/kcfinder/upload/files/99188341421.pdf In PDF document text
    • http://bilagroup.com/wp-content/plugins/formcraft/file-upload/server/content/files/16227dd248209c---86118306224.pdfIn PDF document text
    • https://bticino-rozetki.su/kcfinder/upload/files/mepumijugimuru.pdfIn PDF document text
    • http://119pump.net/d/files/15059205911.pdfIn PDF document text
    • http://htygroup.com/upload/files/totefofat.pdfIn PDF document text
    • https://akemi.ro/hirek/file/4906648698.pdfIn PDF document text
    • http://plan1.ir/assets/ckeditor/kcfinder/upload/files/gafufik.pdfIn PDF document text
    • http://www.hkwebdesign.com.hk/wp-content/plugins/formcraft/file-upload/server/content/files/16203e778371a1---86666683602.pdfIn PDF document text
    • http://www.julietlandau.com/fckeditor/userfiles/file/petuwetig.pdfIn PDF document text
    • http://muratdizayn.com/panel/kcfinder/upload/files/7027715274.pdfIn PDF document text
    • https://legyenegyjonapod.hu/userfiles/files/navijutetobigevi.pdfIn PDF document text
    • http://virtuozi.ru/sites/all/sites/virtuozi.ru/files/bilexupoxelarijofijemodu.pdfIn PDF document text
    • https://areshin.ru/wp-content/plugins/super-forms/uploads/php/files/346e71f7368c5cccd51d4f7a070ed57a/suxamojepizitesom.pdfIn PDF document text
    • http://piqiso.ru/userfiles/file/pobafudop.pdfIn PDF document text
    • http://n-production.com/upload/fckeditor/file/riwum.pdfIn PDF document text
    • http://www.globalconference.info/kcfinder/upload/files/59248575854.pdfIn PDF document text
    • https://biholka.cz/uploades/userfiles/file/61254202201.pdfIn PDF document text
    • https://kitchensofdiablo.com/upload/file/vogomiriwitek.pdfIn PDF document text
    • http://americansemitruckparts.com/d/files/sododofotibexumuvo.pdfIn PDF document text
    • https://www.hauptsache.cc/wp-content/plugins/formcraft/file-upload/server/content/files/16200917845911---86518760675.pdfIn PDF document text
    • http://bndweb.nl/upload/files/73784776522.pdfIn PDF document text
    • https://www.chinacimctrailer.com/wp-content/plugins/super-forms/uploads/php/files/654bf4d214d0c3b9df7075bf5eaf0692/woremovuvadesefaz.pdfIn PDF document text
    • https://www.photosenpoesie.fr/ckeditor/kcfinder/upload/files/28889328769.pdfIn PDF document text
    • http://for-rent-aalst.com/wp-content/plugins/formcraft/file-upload/server/content/files/1621e24286d7ee---62408980919.pdfIn PDF document text
    • https://lifesmart.ro/ckfinder/userfiles/files/98840191880.pdfIn PDF document text
    • http://gmcf.aboutgiving.net/sites/default/files/editor/file/safafemevakojedemiduxoxew.pdfIn PDF document text
    • http://yjccnc.com/upload/files/81214699739.pdfIn PDF document text
    • http://besteva.com/upload/files/golepoxam.pdfIn PDF document text
    • https://norin.co.za/XSRYdR1H?utm_term=matematicas+para+administraci%25C3%25B3n+y+econom%25C3%25ADa+12va+edPDF link annotation
    • http://mbnlpc.com/assets/admin/ckeditor/kcfinder/upload/files/24073645886.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_off0004b6d0.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off0004b6d0.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0004b6d0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4B6D0 18652 bytes
SHA-256: 3a7aab40063fc9cf64c2d60ad61eeff60180be1ee86dd4d4fb1591968bc0e09a
font_01_sfnt_off0004e72a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4E72A 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9
font_02_sfnt_off0004fe4a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4FE4A 11172 bytes
SHA-256: 0063ef2adf282a1702e385e8f7b43bb3b5e08cf452072554bf55d95643a7dac6