Malicious PDF — malware analysis report

Static analysis result for SHA-256 f87ca0e27b36c228…

MALICIOUS

PDF

76.5 KB Created: 2021-11-10 23:03:53 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-16
MD5: f3fc17d39a4cd2f7be39214f171585ba SHA-1: 06579259bb3da7d02f9ada60fa917ceca29ae1b0 SHA-256: f87ca0e27b36c228ab0ddbce9f92e14d7ffd2b788e498a704b575a6b09b45e29
156 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9908

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 http://usa-ex.com/images/blog/file/fumuwagizaxolaz.pdf In PDF document text
    • https://gitimohammadilakhimpur.org/ckfinder/userfiles/files/pidasagosukama.pdfIn PDF document text
    • http://irmascaritasdejesus.org.br/wp-content/plugins/formcraft/file-upload/server/content/files/1617315249c9ee---tizonafanujuluwijosorufuk.pdfIn PDF document text
    • https://propbrains.com/wp-content/plugins/super-forms/uploads/php/files/3286ed2267958888f931dd9f7bd503ea/mimuwanet.pdfIn PDF document text
    • http://sasnowosielski.com/ckfinder/userfiles/files/vuzulesig.pdfIn PDF document text
    • http://ever-pioneer.com/upload/files/19675182862.pdfIn PDF document text
    • http://xn--hazrdner-r4a10d.com/alisveris/yollanan_resimler/file/52162415286.pdfIn PDF document text
    • http://preprod-proximeo.com/ckfinder/userfiles/files/9928076236.pdfIn PDF document text
    • http://nhomphuongnam.com/upload/files/fewiluvotekivur.pdfIn PDF document text
    • https://dondepodemosir.com/userfiles/file/nofexurex.pdfIn PDF document text
    • http://asirakademi.com/resimler/files/rovibesejibabon.pdfIn PDF document text
    • https://tedesco.pl/userfiles/file/98161719422.pdfIn PDF document text
    • https://tucsonhomewindowtint.com/wp-content/plugins/super-forms/uploads/php/files/aa5d490c2bfcaf7e50d601d0a5e36f03/17216611491.pdfIn PDF document text
    • https://www.hungarianassociation.com/wp-content/plugins/formcraft/file-upload/server/content/files/1618a3d1c57edc---ruwikatilumi.pdfIn PDF document text
    • http://lyhycg.com/Upload/file/5376619170.pdfIn PDF document text
    • http://ytovietnam.net/ckfinder/userfiles/files/vimedikobomefapikol.pdfIn PDF document text
    • https://www.indee-r.fr/wp-content/plugins/super-forms/uploads/php/files/a91b89b3ca389e4d3e4f9e396cb41eb9/zilaxagezixikaxoda.pdfIn PDF document text
    • https://artofsurfing.com/preview/ckfinder/userfiles/files/96670854434.pdfIn PDF document text
    • https://arbormaster.net/uploads/files/goretixanamimafusigajos.pdfIn PDF document text
    • http://adveotec.com/img/file/pafazosamenatumuv.pdfIn PDF document text
    • https://ijtm.in/userfiles/file/23481248518.pdfIn PDF document text
    • http://hellnocancershow.com/wp-content/plugins/formcraft/file-upload/server/content/files/161557b972dfc9---83350443259.pdfIn PDF document text
    • http://www.mattig-accounting.bg/fisiere/file/lusisazejevap.pdfIn PDF document text
    • https://wojczak.pl/userfiles/file/sebujisew.pdfIn PDF document text
    • https://terracell.pt/images/file/savaravo.pdfIn PDF document text
    • https://www.urban-quartz.co.uk/wp-content/plugins/super-forms/uploads/php/files/cbd7c68fdc74b6341b16f0be5177e739/manuxixojizinuxar.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Gsjc/~3/vItLtdF7Pec/uplcv?utm_term=behavioral+interview+questions+pdfPDF 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_off0000c426.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC426 11048 bytes
SHA-256: ac5798fbe7ef1dc94aa98da2a3fecb0689909976ddaa7542c68aae9bf8643a73
font_01_sfnt_off0000ddab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDDAB 18160 bytes
SHA-256: d770e0ec8280c4603d7567719bb695c0e4b4868da5942fd36508f1597f93140c
font_02_sfnt_off00010c76.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10C76 16540 bytes
SHA-256: 45015263e28dbf00792e0fa83ae0fb9123af5110209f191c00797c49350166ef