Malicious PDF — malware analysis report

Static analysis result for SHA-256 c5d98fe75299cb5f…

MALICIOUS

PDF

84.0 KB Created: 2021-08-23 17:35:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-28
MD5: 2735537e4dfeb31490a0275ac7669145 SHA-1: 1429be45b227379f355b81da57cb736c28137ff3 SHA-256: c5d98fe75299cb5f42bbc8eb99fdce61fe8df8749caa0a86f7799dfbdcbabbe3
156 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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://catamma.ru/uplcv?utm_term=what+goes+with+purple+and+grey PDF link annotation
    • http://for-rent-leuven.com/wp-content/plugins/formcraft/file-upload/server/content/files/16109171b46c3d---wudexepipelolewaniseg.pdfIn PDF document text
    • http://jinanxintiandi.com/userfiles/files/16696364097.pdfIn PDF document text
    • http://agenziadiviaggiocagliari.it/file/nagaxijidobifid.pdfIn PDF document text
    • http://igigeothermal.jp/userfiles/file/wusopafibatewebizeneti.pdfIn PDF document text
    • http://opuspoint.com/ckfinder/userfiles/files/37796133705.pdfIn PDF document text
    • http://www.birapart.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b486c325dc9---70493754781.pdfIn PDF document text
    • http://www.fonfe.com/uploads/files/nisivigi.pdfIn PDF document text
    • http://vdgairconditioning.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160b7cbb070afb---fowegowelesopafeleb.pdfIn PDF document text
    • https://visualarchive.bg/files/wifutixonolupuvigasamifo.pdfIn PDF document text
    • http://adanateknikservis.web.tr/wp-content/plugins/formcraft/file-upload/server/content/files/160984fde34bc2---pugon.pdfIn PDF document text
    • https://www.beewellrx.com/wp-content/plugins/super-forms/uploads/php/files/tmp/fusebomabikerewiw.pdfIn PDF document text
    • https://meesens.be/KrMee/Tekstverwerker/45321828294.pdfIn PDF document text
    • http://quickfix-poland.com/wp-content/plugins/formcraft/file-upload/server/content/files/1610beb22820d8---35022964127.pdfIn PDF document text
    • https://mudateconmigo.cl/wp-content/plugins/super-forms/uploads/php/files/bdb2e2cb68a41d2545c292c8b6e21d2b/28084163127.pdfIn PDF document text
    • https://robertmatzuzi-massagetherapist.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/1610ab5a502183---womemariv.pdfIn PDF document text
    • https://petrovsky14.ru/docs/files/polavigijidozunifaxaj.pdfIn PDF document text
    • http://msinziniering.com/userfiles/file/91734907577.pdfIn PDF document text
    • http://simkoongschool.com/uploads/editer/files/72191956251.pdfIn PDF document text
    • http://dmscsmartlifeblog.com/userfiles/files/rozupazikarilosupivusone.pdfIn PDF document text
    • https://webhostmurah.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607496a5a4543---gekaxexixezugofatugodid.pdfIn PDF document text
    • http://luingpyrex.cz/foto/Image/file/8964257602.pdfIn PDF document text
    • https://nhorizontours.com/userfiles/files/35724763543.pdfIn PDF document text
    • http://odpadykj.cz/UserFiles/File/72625255363.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e453.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE453 10964 bytes
SHA-256: 57c5e6cb65fdfd8e54033921d99eb6d63aa6792470959df282859a644bd4ae6f
font_01_sfnt_off0000fd92.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFD92 17120 bytes
SHA-256: d71ff3504bf1d123f5c254432e5e5b13037d6296154f53274b4a59c40559dfef
font_02_sfnt_off000129d9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x129D9 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1