Malicious PDF — malware analysis report

Static analysis result for SHA-256 478510a25f8d17b2…

MALICIOUS

PDF

77.3 KB Created: 2021-11-23 08:50:07 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-20
MD5: 5dd8ad4cd798400c62102705f100d357 SHA-1: 3326103ab0bc3a313301c5bf2e2942c38fc39fb1 SHA-256: 478510a25f8d17b21ac3899a97d22440cb679fffe78994aba2c181193c0acee7
156 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9985

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://ipvoicenj.com/wp-content/plugins/formcraft/file-upload/server/content/files/1616eb31a9d398---lidugotiranasitu.pdf In PDF document text
    • http://aliancegroup.su/wp-content/plugins/formcraft/file-upload/server/content/files/1619ad19bb14b3---mesedarozuwovud.pdfIn PDF document text
    • https://accu-split.com/userfiles/files/62845512041.pdfIn PDF document text
    • https://sayurmateng.com/contents/files/95960870115.pdfIn PDF document text
    • http://thinhhoanggia.vn/Images_upload/files/81360366069.pdfIn PDF document text
    • https://corcreation.twbiz.me/data/fckeditor/files/20211028_212050.pdfIn PDF document text
    • http://kommunikator.nu/demo/userfiles/file///volonaxonoxa.pdfIn PDF document text
    • http://gazomotor.com/allinone/file/gexodowodikefibiwiva.pdfIn PDF document text
    • https://samsungvrvklima.com/upload/ckfinder/files/63057998714.pdfIn PDF document text
    • http://semihkerpiccilervesupersound.com/upload/file/38520020533.pdfIn PDF document text
    • https://www.habitat-morvan.fr/ckfinder/userfiles/files/pemozafixa.pdfIn PDF document text
    • https://kinohorror.com/upload/file/xofututobuxob.pdfIn PDF document text
    • http://www.ashtralmedia.com/wp-content/plugins/formcraft/file-upload/server/content/files/1618e9244b53b4---birifar.pdfIn PDF document text
    • http://belly.bpv.su/content/files/files/fajaxiw.pdfIn PDF document text
    • http://myslizdrave.com/soubory/82385404590.pdfIn PDF document text
    • http://opgzvh.hr/upload/file/63964147207.pdfIn PDF document text
    • http://canavesiobruno-architetti.it/userfiles/files/19075504447.pdfIn PDF document text
    • http://gccde.com/downloads/blog/geust/files/35865954513.pdfIn PDF document text
    • https://es88.tw/pro_pic/files/16361793646.pdfIn PDF document text
    • http://kingswaytyres.com/project/kingsway/uploads/file/45258097960.pdfIn PDF document text
    • https://beautydent.hu/editor_up/92986805803.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Gsjc/~3/u-9XGpgKpwY/uplcv?utm_term=on+the+other+hand+and+howeverPDF 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_off0000ccf1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCCF1 17196 bytes
SHA-256: 494d1828572f8eef86e090ce14b5738b538e56c6aac0133a5f921ff9d557f198
font_01_sfnt_off0000f9d7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF9D7 10216 bytes
SHA-256: 6a509e131f93ba5cf00fe4ac293edf6a6a39406718c7d9510890b52dd47e6d5f
font_02_sfnt_off000110c3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x110C3 16416 bytes
SHA-256: cfa2c3fbce80cc5607e01af033b793d17c57c214fb1d96e845eedea48cccd336

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