Malicious PDF — malware analysis report

Static analysis result for SHA-256 7824c8873da3ba25…

MALICIOUS

PDF

478.8 KB Created: 2021-12-21 17:42:37 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-16
MD5: ef7126e98bf827f7a459900f49352442 SHA-1: df5d587c38131604de23073aa4dbb0ff1dd5a204 SHA-256: 7824c8873da3ba25488805545b04d233fab3c5edc9fceb6de3e78d6a2681c405
136 Risk Score

Machine Learning

  • Nyx PDF Classifier suspicious score 0.4741

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://ls-machinery.com/uploadpic/files/202110250121003988.pdf In PDF document text
    • https://www.digitalsofts.com/wp-content/plugins/formcraft/file-upload/server/content/files/1617e1b8d6bce5---wuputupabubuparekon.pdfIn PDF document text
    • https://pinyardim.com/calisma2/files/uploads/37360636934.pdfIn PDF document text
    • http://marienoellebermond.com/img/uploaded/file/13334263417.pdfIn PDF document text
    • http://martom24.pl/martom/userfiles/file/36628471440.pdfIn PDF document text
    • http://moveworldtogether.com/datas/files/zimoveworenotajalore.pdfIn PDF document text
    • http://darstin.com/userfiles/files/77891284509.pdfIn PDF document text
    • https://b2bpro.xyz/userfiles/file/jewepabedoxoduvoladokalo.pdfIn PDF document text
    • http://skulpt.in/admin/uploads/file/godozimozozixuledojadoxix.pdfIn PDF document text
    • http://thefutureofgolf.eu/wp-content/plugins/formcraft/file-upload/server/content/files/161a663c6de4c3---tomifukewopumifezaxar.pdfIn PDF document text
    • https://israelonthehouse.com/wp-content/plugins/formcraft/file-upload/server/content/files/1617e829c2902f---tatesiwurejud.pdfIn PDF document text
    • http://ceemafor.com/catalogue/upload/document/91856851966.pdfIn PDF document text
    • https://mancomunidadvaldizarbe.com/userfiles/files/motajumagane.pdfIn PDF document text
    • https://genesisbehaviorcenter.com/wp-content/plugins/super-forms/uploads/php/files/569308bd9062256e7fba9bf5a88a0083/99131882935.pdfIn PDF document text
    • https://hcs1000.org/wp-content/plugins/super-forms/uploads/php/files/f618b93eaeb39d8fe62d27c03e3cd50e/vakiwakobupilaxozi.pdfIn PDF document text
    • https://nguoixunghekiev.vn/userfiles/file/68100409428.pdfIn PDF document text
    • http://testplanet.nl/uploads/files/wusuwakexiwotagugebu.pdfIn PDF document text
    • https://vanha.kokkolansuunnistajat.fi/ckfinder/userfiles/files/84199983979.pdfIn PDF document text
    • http://inbeeldt.nl/userfiles/file/96951878740.pdfIn PDF document text
    • http://www.rolstoellift.com/wp-content/plugins/formcraft/file-upload/server/content/files/1614844c47648a---japuresoxudovojarefoti.pdfIn PDF document text
    • https://nationalcardsolutions.com/wp-content/plugins/formcraft/file-upload/server/content/files/1614acabb328da---sijimizewuxujajuto.pdfIn PDF document text
    • http://mtrendgroup.com/MTrendGroup/uploadfile/fck/file/geturupawogaremexin.pdfIn PDF document text
    • http://gruppocaminiti.it/userfiles/files/94865830941.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Gsjc/~3/RhDyTiV0TgQ/uplcv?utm_term=free+biology+books++sitesPDF 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 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_off00070f94.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x70F94 10340 bytes
SHA-256: 3399baf607d5c11e12945b90712ded27e47e1871b6349b40e8202d9a1207b02e
font_01_sfnt_off00072709.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x72709 16416 bytes
SHA-256: cfa2c3fbce80cc5607e01af033b793d17c57c214fb1d96e845eedea48cccd336
font_02_sfnt_off00073da8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x73DA8 17852 bytes
SHA-256: 5e9e9fc36239d36ecebf2a91e6607f99eea6839b110b5a9ba30b4f364db921c1