Malicious PDF — malware analysis report

Static analysis result for SHA-256 478a9b28b5f0b9e0…

MALICIOUS

PDF

83.9 KB Created: 2021-06-27 15:02:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-20
MD5: 6acae0c896a357ebf60ae6b3763ba096 SHA-1: 077cb44a7c0f17dd550f22c462cbb48e38ec4c0d SHA-256: 478a9b28b5f0b9e0158f5c1b9b839031e36eaf027ffedf62eb65fc3a14df2f69
156 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9972

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
  • 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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. 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://avenirpourtous.fr/wp-content/plugins/formcraft/file-upload/server/content/files/1606f63bf8aa85---95222166124.pdf In PDF document text
    • http://kaufdeinauto.de/wp-content/plugins/formcraft/file-upload/server/content/files/16092e4860b091---zixogaxezubirodade.pdfIn PDF document text
    • http://hosungtour.com/FileData/ckfinder/files/20210601_BDB45C3BACF6D847.pdfIn PDF document text
    • http://aeskulap24h.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607ba681f06d0---37596961285.pdfIn PDF document text
    • https://mudateconmigo.cl/wp-content/plugins/super-forms/uploads/php/files/06d361fba5a40b7f06bab28503cb005b/61397170140.pdfIn PDF document text
    • https://nhathuydesign.com/wp-content/plugins/super-forms/uploads/php/files/50g19rnv2rfs33fuf5l9lrnseo/butafizado.pdfIn PDF document text
    • http://www.alwaysflorida.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609b721a56b4c---64859277103.pdfIn PDF document text
    • http://abpaluso.com/upload/file/gofidalemamigubavofovati.pdfIn PDF document text
    • https://gulertrafik.com/wp-content/plugins/super-forms/uploads/php/files/76ifibn8f9krbjrcvq022nn3fv/tonukiwakod.pdfIn PDF document text
    • https://iamtimeshare.com/userfiles/file/78486932649.pdfIn PDF document text
    • https://yziact.fr/wp-content/plugins/super-forms/uploads/php/files/r59e43dbnmnrhrg47rr34050fg/fageravafiraforug.pdfIn PDF document text
    • https://biodent.ro/m4fm_files/m4news/ck-uploads-files/rogib.pdfIn PDF document text
    • https://gregor-biffiger.ch/userfiles/file/vudekogerafimowajig.pdfIn PDF document text
    • https://www.verpoort-bouw.be/wp-content/plugins/formcraft/file-upload/server/content/files/160bfa82ed584d---diwarojukibube.pdfIn PDF document text
    • https://auto826.com/uploads/files/kotorujazeser.pdfIn PDF document text
    • http://bptramptour.pl/files/file/16626766203.pdfIn PDF document text
    • https://amenajarisiconstructii.ro/wp-content/plugins/formcraft/file-upload/server/content/files/1608f10603b309---lesatiwomoguzewevudiguviw.pdfIn PDF document text
    • http://hotstamping.pl/files/file/kavazujuzerajusijobifis.pdfIn PDF document text
    • https://www.servicioscalibrados.com/wp-content/plugins/super-forms/uploads/php/files/6d8cd49634e0700d1ba578af357ad25b/vurekoxexirega.pdfIn PDF document text
    • http://bagandpack.ru/wp-content/plugins/super-forms/uploads/php/files/246bd310f6dbc23418bc20bd3b3ef647/sisofifipasid.pdfIn PDF document text
    • https://kayakbranson.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a7a0e8a98e9---nakoregadozirax.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/A3Ryygt5BCM/uplcv?utm_term=personal+subject+and+object+pronounsPDF 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_off0000e32a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE32A 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000fb41.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFB41 10784 bytes
SHA-256: 7b679200b92d0d1cec4f794a9b17f1f1506fb4b5ab7c3b9d409faf5e2d54ad02
font_02_sfnt_off00011411.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11411 18328 bytes
SHA-256: 114a09e180942b11bcabdf204756b1816d02e383c33a9f30b57884abfa478364