Malicious PDF — malware analysis report

Static analysis result for SHA-256 4781eca5df4259d1…

MALICIOUS

PDF

364.3 KB Created: 2021-12-22 08:11:59 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-20
MD5: edfb991a3161b3242ccb8aaefa3e8f49 SHA-1: c9a93c78c2aa450ba6d33edb3154846081e52962 SHA-256: 4781eca5df4259d1e6f5033bbc4ee334e1de092cad44fff897938989b3aa2809
166 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.8454

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://taxfirma.com/userfiles/file/38164438617.pdf In PDF document text
    • http://kimyasaldubeller.com/upload/ckfinder/files/47249435288.pdfIn PDF document text
    • http://jobcred.com/rk/jobcred/uploads/image/file/walemivodoliralimababoxix.pdfIn PDF document text
    • http://hkacca.com/userfiles/xepodel.pdfIn PDF document text
    • https://rmdschoolandcollege.com/wp-content/plugins/super-forms/uploads/php/files/4984154d702e20cd8e42f7c61be6773a/mekuvatotekujuzorosadamun.pdfIn PDF document text
    • http://lavera.it/wp-content/plugins/formcraft/file-upload/server/content/files/1616880c20d3d2---72708102960.pdfIn PDF document text
    • http://sga.cc/uploadfile/file///2021111809320625.pdfIn PDF document text
    • http://3q1p.com/upload/file/2110231754538783774ceos40uu8e6.pdfIn PDF document text
    • http://magiepourenfants.com/images/mediamanager/file/34759739898.pdfIn PDF document text
    • http://physio-praxismitte.de/userfiles/figilupulukulimoxo.pdfIn PDF document text
    • https://www.pferde-fuer-unsere-kinder.de/wp-content/plugins/formcraft/file-upload/server/content/files/161b7ebdb55ea8---61942084131.pdfIn PDF document text
    • http://kapalishakti.com/ckfinder/userfiles/files/faxoruxofakezadatu.pdfIn PDF document text
    • http://xn--80aaa1acmiejxr6d7fg.xn--p1ai/data/files/xemusazotaxapanejadeloj.pdfIn PDF document text
    • http://medigroupvn.com/upload/files/solezutulupot.pdfIn PDF document text
    • https://neurondevelopment.org/userfiles/file/sodafobazonudidebuzumi.pdfIn PDF document text
    • https://mannerfeltdesignteam.se/ckfinder/userfiles/files/83768161.pdfIn PDF document text
    • https://www.goldenplanet.dk/wp-content/plugins/formcraft/file-upload/server/content/files/161691990b4e91---gavijevevikib.pdfIn PDF document text
    • http://hndgyl.com/v15/Upload/file/20211011729131450.pdfIn PDF document text
    • http://sunriverps.com/data/editor/file/xinavidororexebowujov.pdfIn PDF document text
    • https://10playsolutions.com/clients/softklk/documents/_articles_/file/15109109915.pdfIn PDF document text
    • http://metabolit-plus.ru/files/file/moberijud.pdfIn PDF document text
    • http://asalsold.com/wp-content/plugins/formcraft/file-upload/server/content/files/16137aabb8f18a---jekoxuze.pdfIn PDF document text
    • https://clicksnepal.grnca.org/img/files/files/12625552443.pdfIn PDF document text
    • http://feedproxy.google.com/~r/MbOu/~3/HKUGBsJGI0E/uplcv?utm_term=bharath+simha+reddy+moviePDF 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_off0005439f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5439F 16416 bytes
SHA-256: cfa2c3fbce80cc5607e01af033b793d17c57c214fb1d96e845eedea48cccd336
font_01_sfnt_off00055a43.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x55A43 10596 bytes
SHA-256: be18faeb0937eaeccd9bb1b893585b105fa8ceeb6542797d99d80b226e9f8866
font_02_sfnt_off0005728f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5728F 18380 bytes
SHA-256: 2b931ff5c67b680d49733ca9b3ab5cd3ba32e964173bf123638c188cc251b6ad