Malicious PDF — malware analysis report

Static analysis result for SHA-256 65dff3ab14585eda…

MALICIOUS

PDF

94.7 KB Created: 2021-06-29 01:05:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: 92042c5fb493ef8dacf42e40308265e5 SHA-1: 94b4294c18e35de88f3fb639865bc40f09643622 SHA-256: 65dff3ab14585edae16d173faa3fe3ff7925eeb7f843fc12e88aeae1c6fa3e4f
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF file was flagged as malicious by ClamAV and an ML classifier. It contains numerous links pointing to compromised websites, indicating a link farm designed to redirect users. The presence of these links suggests an attempt to host malicious content or phishing pages on these compromised sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9937

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://bettenbaehren.de/wp-content/plugins/formcraft/file-upload/server/content/files/160c474424217f---73829319345.pdf In PDF document text
    • https://big-cash.de/wp-content/plugins/super-forms/uploads/php/files/0jsa1i2hgnqrtajs9t8pabkq1l/798283331.pdfIn PDF document text
    • http://www.nanodrywash.com/wp-content/plugins/formcraft/file-upload/server/content/files/160cbafcce6c0b---wujapufejunaforenujus.pdfIn PDF document text
    • http://accessiblevehicleservices.com/userfiles/file/xadiwanitevinezoridef.pdfIn PDF document text
    • http://www.sunarozlem.com.tr/wp-content/plugins/super-forms/uploads/php/files/5qk9uhqs6gb0ivaoi29ho9kgg4/kawiw.pdfIn PDF document text
    • https://edukiya.com/wp-content/plugins/super-forms/uploads/php/files/250ebcc651910ca7a1cc8394f99eb626/fomadakojolifubexowug.pdfIn PDF document text
    • https://husvagnsexpo.se/wp-content/plugins/formcraft/file-upload/server/content/files/160c574da5c4ec---86013773251.pdfIn PDF document text
    • https://www.ideaklinikbursa.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607a5808ddb61---5379332952.pdfIn PDF document text
    • https://independentmusicleague.com/wp-content/plugins/super-forms/uploads/php/files/5189aa9f507dd6dadd607e151fa841eb/zebotagebadewu.pdfIn PDF document text
    • https://gearforfree.com/wp-content/plugins/super-forms/uploads/php/files/mm567nn3drfnuktl0cv392g6hg/jepewawunogebikajup.pdfIn PDF document text
    • https://acethamessecurity.co.uk/wp-content/plugins/super-forms/uploads/php/files/71c80f5e7f39ec008b70250fac05b39a/nunemitawuj.pdfIn PDF document text
    • http://www.emporiocaritaspisa.it/wordpress/wp-content/plugins/formcraft/file-upload/server/content/files/16089472939401---nidemanijesoposoxidap.pdfIn PDF document text
    • https://cape-electronics.com/media/file/80974233945.pdfIn PDF document text
    • http://melissajacksonmd.com/wp-content/plugins/formcraft/file-upload/server/content/files/16096edaf1fee4---jinomusijufimoxavapenexos.pdfIn PDF document text
    • https://centrosteadycam.it/wp-content/plugins/super-forms/uploads/php/files/5f66e78dfd7c6870f225a5b2204d6436/rubazajulolizipegimiwak.pdfIn PDF document text
    • http://speckrepeg.by/UserFiles/files/23711476264.pdfIn PDF document text
    • http://wbbray.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d44ca5359b1---24089461400.pdfIn PDF document text
    • https://najlepsze-w-polsce.pl/uploads/tuzujid.pdfIn PDF document text
    • https://www.qbuildsoftware.com/wp-content/plugins/super-forms/uploads/php/files/4734722f90818339b5171cc7fd9cb1b1/bobapi.pdfIn PDF document text
    • https://landbondcorten.com/attachment/file/7dacb0b2475d13f1430bedc28bf58e30.pdfIn PDF document text
    • http://sumterhigh89.com/clients/863574/File/81257610843.pdfIn PDF document text
    • http://www.movingintofreedom.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c2233f22e66---befiwatogomijufe.pdfIn PDF document text
    • https://www.mii.net/wp-content/plugins/super-forms/uploads/php/files/0a8b9bd8ee2b17b22b58405c74e3c3e1/sagadajelasi.pdfIn PDF document text
    • http://allmedicus.com/userfiles/file/xonuxi.pdfIn PDF document text
    • https://travelinnsuites.com/nbloom/fckuploads/file/vedakuwalemiduxog.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/3CAf4wW3hvY/uplcv?utm_term=baby+has+fever+for+5+daysPDF 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_off00010de7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10DE7 10616 bytes
SHA-256: 5a99094fade7d6e3781154755dc4ff0ff082b5d1f7f195a02a59c4b6c6c4cfb7
font_01_sfnt_off0001266d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1266D 17552 bytes
SHA-256: b7409155273088847b8359ee60e42cb7dcab7729c513cddbe69b4741fbe5dfd3
font_02_sfnt_off00015406.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15406 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1