Malicious PDF — malware analysis report

Static analysis result for SHA-256 478a71779c7909b2…

MALICIOUS

PDF

155.9 KB Created: 2021-11-30 19:33:56 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-20
MD5: 15f436b286bf13c12628354a15f909a1 SHA-1: 6b830f513c7644f972ffe9722d015d49990d932a SHA-256: 478a71779c7909b2c974c1633998554c678d56de6c7e7bd138cf2a918adbd6c6
156 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9488

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://eurosolar.cz/res/file/60803247569.pdf In PDF document text
    • https://sieseam.org/userfiles/files/84390002650.pdfIn PDF document text
    • http://harc-ias.vn/Images_upload/files/kevulanegekotisajel.pdfIn PDF document text
    • http://conservationenergy.com/wp-content/plugins/formcraft/file-upload/server/content/files/161a61cef091ef---jazitowasoxila.pdfIn PDF document text
    • http://stlukesfp.org/ckfinder/userfiles/files/8853400472.pdfIn PDF document text
    • http://herodumpsterrental.com/wp-content/plugins/super-forms/uploads/php/files/f4a1436ed7c85415c248dc272f1a49fe/94454901840.pdfIn PDF document text
    • http://zadonskiy.ru/wp-content/plugins/formcraft/file-upload/server/content/files/161560c6c372a0---fagegaxurimem.pdfIn PDF document text
    • http://konsultacjenaukowe.eu/Upload/file/kupetofonugoba.pdfIn PDF document text
    • https://promoform.coreform.it/uploads/file/pafomuxalasaxedaje.pdfIn PDF document text
    • https://tranduongauto.com/app/webroot/files/images/pages/files/guxujipinavosuwemisap.pdfIn PDF document text
    • http://csc025.com/userfiles/file/20210907100021_o6phbx.pdfIn PDF document text
    • http://s2ipower.com/survey/userfiles/files/67687201808.pdfIn PDF document text
    • https://k-newsletter.com/ckupload/files/36032414692.pdfIn PDF document text
    • https://zaindu.drogomedia.com/files/galeria/files/rojafanoxa.pdfIn PDF document text
    • http://acpiindia.com/userfiles/file/66068544520.pdfIn PDF document text
    • http://fruitsad.pl/images/file/fazekeganox.pdfIn PDF document text
    • http://7m-shop.com/userfiles/file/92857870566.pdfIn PDF document text
    • https://rowadalbyt.com/userfiles/files/lizaroliporoziju.pdfIn PDF document text
    • https://www.grecosalesinternational.com/wp-content/plugins/formcraft/file-upload/server/content/files/1619c1633a56ac---45340901164.pdfIn PDF document text
    • http://www.studiolegalefusimorelli.com/wp-content/plugins/formcraft/file-upload/server/content/files/161656132ce81f---78989654151.pdfIn PDF document text
    • http://gemtown88.com/PicOther/file/85099029578.pdfIn PDF document text
    • http://weighlessthisyear.com/ckfinder/userfiles/files/pujixikubederu.pdfIn PDF document text
    • http://fantasypartyentertainment.com/wp-content/plugins/formcraft/file-upload/server/content/files/1618a3f4858d1a---77719819428.pdfIn PDF document text
    • http://recruiters-zone.com/wp-content/plugins/formcraft/file-upload/server/content/files/16167b01fda2fd---binoxokolisapogiwilipe.pdfIn PDF document text
    • http://feedproxy.google.com/~r/Xvkpad/~3/xPAns0MRe5M/uplcv?utm_term=yapay+zeka+uygulamalar%C4%B1+ders+notlar%C4%B1PDF 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_off0001fc0d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1FC0D 11040 bytes
SHA-256: 373f78c9be06254a77954eb58c8be435af6ce409c196e3cd598e96d73a44e67b
font_01_sfnt_off0002158b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2158B 16416 bytes
SHA-256: cfa2c3fbce80cc5607e01af033b793d17c57c214fb1d96e845eedea48cccd336
font_02_sfnt_off00022c2a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x22C2A 20444 bytes
SHA-256: 9958f670090ab92d2a161ec509a6e309b3156d905afca60957a798eb08a9ef19