Malicious PDF — malware analysis report

Static analysis result for SHA-256 4258be474d276616…

MALICIOUS

PDF

344.0 KB Created: 2022-01-04 23:00:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-15
MD5: 01c5a3c27ed1be3d12acbc4dff491d07 SHA-1: 9b278a2e24968d0798e84bb7c8d2a6eeb3817c36 SHA-256: 4258be474d27661612e9f724613ee9d3993daa870a6dc733ba00e787182de902
166 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.6819

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://medvor.ru/uplcv?utm_term=red+and+black+3d+wallpaper PDF link annotation
    • http://www.kindytennis.com/wp-content/plugins/formcraft/file-upload/server/content/files/1615b1a9f6daba---vepovegadodopikorisaziz.pdfIn PDF document text
    • http://advocaciaciervo.com/kcfinder/upload/files/28178492897.pdfIn PDF document text
    • https://arichaindia.com/userfiles/file/gekimujerakotimuj.pdfIn PDF document text
    • https://faresaldabbous.com/uploads/file/15092092648.pdfIn PDF document text
    • http://kondicionery-shodnya.ru/upload_picture/file/58080208340.pdfIn PDF document text
    • http://sasnowosielski.com/ckfinder/userfiles/files/dixelexakesinomavebox.pdfIn PDF document text
    • http://wsm.hk/images/files/pipapejesif.pdfIn PDF document text
    • http://songdolandmarkcity.com/userfiles/file/wobug.pdfIn PDF document text
    • https://binarbaidtrading.com/public_html/userfiles/file/171732821.pdfIn PDF document text
    • https://centaur.vri.cz/docs/files/63071024514.pdfIn PDF document text
    • http://hajostanfolyam.hu/admin/kcfinder/upload/files/65664608218.pdfIn PDF document text
    • http://qboardapp.com/wp-content/plugins/super-forms/uploads/php/files/72fd038dd18f09d9775eef26f9aa3f59/93211470586.pdfIn PDF document text
    • https://glamweddingdesign.com/userfiles/file/44514792227.pdfIn PDF document text
    • http://wohntraumgmbh.at/18461595022.pdfIn PDF document text
    • https://www.formwork.co.uk/wp-content/plugins/super-forms/uploads/php/files/780bov101jqvh1nf5nh7k3jpkt/76959303594.pdfIn PDF document text
    • https://ateliersmq.com/pevron/www/img/file/45452383907.pdfIn PDF document text
    • http://ipvoicenj.com/wp-content/plugins/formcraft/file-upload/server/content/files/1618dc49bc4877---8093297487.pdfIn PDF document text
    • http://kinel-hunter.ru/upfiles/file/17141099244.pdfIn PDF document text
    • http://myjobcareer.net/userfiles/file/2021103019145673499.pdfIn PDF document text
    • http://sireny.net/share/files/494277391.pdfIn PDF document text
    • https://www.democratum.com/wp-content/plugins/super-forms/uploads/php/files/ee380f9b6e53793f61baa561cfcb2b3d/dezeri.pdfIn PDF document text
    • http://socukorglutamatmentesfuszer.hu/ckfinder/userfiles/files/nafakuzisotipenozalon.pdfIn PDF document text
    • http://195exim.com/datas/files/nupepi.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0004daf3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4DAF3 16416 bytes
SHA-256: cfa2c3fbce80cc5607e01af033b793d17c57c214fb1d96e845eedea48cccd336
font_01_sfnt_off0004f192.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4F192 20156 bytes
SHA-256: 846fc8b944dcd57c3f9c79bc27315f1ca8323ed53c6393ba911f44d984b50f91
font_02_sfnt_off00052686.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x52686 4984 bytes
SHA-256: 1e4e465925325503d8f34a38418e7b4998954ef85307a2daff2c78da42ac5115
font_03_sfnt_off0005388a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5388A 10564 bytes
SHA-256: 2b71478cb2c577e7295e9056ad4295eb6b33cd18a8fb97d7db5f8d24f6071b32