Malicious PDF — malware analysis report

Static analysis result for SHA-256 3dded03413379e4e…

MALICIOUS

PDF

85.3 KB Created: 2021-09-13 05:14:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-26
MD5: 3f15fd973c67573b9eef37b56b954f12 SHA-1: 52919bf1ff5eb814926f55b5ee6081f97979dd5a SHA-256: 3dded03413379e4e0c5a1e83a2ed54ff2ec39dabd6584c96d2a64ad58899879b
156 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9977

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://archism.ru/uplcv?utm_term=how+to+create+folders+on+android+phone PDF link annotation
    • http://gloteckr.com/upload/editor/file/vunawolevemoxowezirewum.pdfIn PDF document text
    • http://www.maarsehoveniers.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1613255592b2cc---93331658981.pdfIn PDF document text
    • https://hexema.com/FCKeditor/file/medovu.pdfIn PDF document text
    • https://camphacement.vn/upload/files/dofakepuxodegerulowa.pdfIn PDF document text
    • https://amesmedicalservices.com/wp-content/plugins/formcraft/file-upload/server/content/files/161312216b4323---vapixujaribat.pdfIn PDF document text
    • http://bienchidan.org/uploads/files/zaneratuwaso.pdfIn PDF document text
    • http://bojovesporty.cz/userfiles/file/23961614205.pdfIn PDF document text
    • http://zussobrance.sk/grafika/dokumenty/notesab.pdfIn PDF document text
    • https://argentinaproduct.com/ckfinder/userfiles/files/wajiguler.pdfIn PDF document text
    • http://skpizzasubs.com/uploads/files/72119286888.pdfIn PDF document text
    • http://purepassion.pl/userfiles/file/vetavewaxezufafujowamif.pdfIn PDF document text
    • http://reylab.com/userfiles/file/geroxefukemix.pdfIn PDF document text
    • http://chiari-web.com/ckfinder/optimist/files/95751161028.pdfIn PDF document text
    • http://fc-junajted.com/upload/datoteke/1989861605.pdfIn PDF document text
    • https://tcufroghouses.com/wp-content/plugins/formcraft/file-upload/server/content/files/161370011854d0---zibesijerunowutade.pdfIn PDF document text
    • http://tranhdaquydep.vn/upload/files/woxosujir.pdfIn PDF document text
    • http://aroma-es.red/yamituki-n/uploads/files/putilubivi.pdfIn PDF document text
    • http://gazdalkodjokosan.hu/img/userfiles/file/59031614356.pdfIn PDF document text
    • https://fancybox.pamlskovnik.cz/ckfinder/userfiles/files/28397030105.pdfIn PDF document text
    • https://dlt-nkp.com/fileupload/file/gewuzijevufelomu.pdfIn PDF document text
    • https://cottonweb.net/userfiles/file/65163836083.pdfIn PDF document text
    • https://familienbilstrup.dk/userfiles/file/2484941233.pdfIn PDF document text
    • http://women-for-marriage.com/ckfinder/userfiles/files/13532502440.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_off0000e806.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE806 10796 bytes
SHA-256: 5f9bba75324cb5ab274a2e62e0cd2ef67accd8c0a9de7f3e25f12e341653e980
font_01_sfnt_off000100d2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x100D2 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off000118e4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x118E4 17832 bytes
SHA-256: 99aa831a9519d779e4dd315dd05f1802db5a50ce2d8834e995fdfa5f4ea767f9