Malicious PDF — malware analysis report

Static analysis result for SHA-256 6dfc3925c4a69b7a…

MALICIOUS

PDF

70.5 KB Created: 2021-12-09 04:36:09 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-05-19
MD5: 2042456a9fe3f3cb819150c5374cddb4 SHA-1: afeb5d20d927e3e995734e89f53e07568394f54b SHA-256: 6dfc3925c4a69b7a362d47177b0427750b2b0071e4e00bb120442170f48192ed
156 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9840

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://wamsconference.com/wp-content/plugins/super-forms/uploads/php/files/136a46fd34cca3594517f5aa610578a3/13917869534.pdf In PDF document text
    • http://www.davidwoodpersonnel.com/wp-content/plugins/formcraft/file-upload/server/content/files/16153cbab90b7e---85878061170.pdfIn PDF document text
    • http://worldofpacifiers.com/editor_uploads/system/files/36441835206.pdfIn PDF document text
    • http://www.roosprommenschenckelfoundation.nl/ckfinder/files/files/jelapubotobovaso.pdfIn PDF document text
    • http://china-miyaco.com/img/file/202111121833.pdfIn PDF document text
    • http://novo-foto.ru/ckfinder/userfiles/files/nigeromojelimajip.pdfIn PDF document text
    • https://totalyoumovement.com/wp-content/plugins/formcraft/file-upload/server/content/files/16131ff663ad1e---27056380949.pdfIn PDF document text
    • http://www.mkkdigital.pt/wp-content/plugins/formcraft/file-upload/server/content/files/1615270836aa87---37429121742.pdfIn PDF document text
    • http://futsalcb.cz/picture/vtextu/file/futabexowaweloka.pdfIn PDF document text
    • https://nobleanimalsanctuary.org/wp-content/plugins/super-forms/uploads/php/files/tmp/49912422783.pdfIn PDF document text
    • http://telegid.tv/userfiles/files/98096075939.pdfIn PDF document text
    • https://phatgiaolongan.com/upload/ckupload/files/14281555760.pdfIn PDF document text
    • http://tsg-edinstvo.ru/userfiles/file/27261741019.pdfIn PDF document text
    • http://www.carolglassman.com/wp-content/plugins/formcraft/file-upload/server/content/files/16169fd0245f57---taleveboxojuvodibisonaza.pdfIn PDF document text
    • http://daming-school.com/userfiles/file/ropelezojerotifuzox.pdfIn PDF document text
    • http://lightofislamonair.org/uploads/files/javepetafafajax.pdfIn PDF document text
    • http://chocoenglish.com/_UploadFile/Images/file/kizugofijeminenojatum.pdfIn PDF document text
    • https://www.helpfulhunks.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/1616dfbc560587---933172383.pdfIn PDF document text
    • http://odpadykj.cz/UserFiles/File/26959147273.pdfIn PDF document text
    • https://milosislandrooms.gr/userfiles/file/326850044.pdfIn PDF document text
    • http://kameleonhastanc.hu/files/file/gajufoxokopigikikewojori.pdfIn PDF document text
    • http://remont-etalon.ru/upload/files/41147862391.pdfIn PDF document text
    • http://bahtiyardishekimi.com/fckfiles/file/nuvozizoselasorevotori.pdfIn PDF document text
    • http://vit-physio.de/file/26908988823.pdfIn PDF document text
    • http://k2plusinterior.com/userfiles/80770311680.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Gsjc/~3/Z3ufxtS7Wvw/uplcv?utm_term=melnor+aqua+timer+manualPDF link annotation
    • https://b2cdemo.tickets.com/content/files/kuvividu.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 extracted file (font_00_sfnt_off0000b15d.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off0000b15d.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000b15d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB15D 10340 bytes
SHA-256: ecbf3c87c12df86600962a55fee401791ed570fd6820ed848a43410664b8a63e
font_01_sfnt_off0000c89e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC89E 17304 bytes
SHA-256: 305363768a15f7f7f90082883e5106cd8394a451c53a9bb9e19ca0744eb50fbb
font_02_sfnt_off0000f5eb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF5EB 16416 bytes
SHA-256: cfa2c3fbce80cc5607e01af033b793d17c57c214fb1d96e845eedea48cccd336