Malicious PDF — malware analysis report

Static analysis result for SHA-256 7dc02c68a320d6db…

MALICIOUS

PDF

90.0 KB Created: 2021-07-05 21:43:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: 5063574c7ef55007112214fc6cecbc18 SHA-1: b103700d22c3d0be25b31b469d193cc6e371d3d4 SHA-256: 7dc02c68a320d6dba90bba2db64b15a76ca039cd31bf541e7af5044f95635387
96 Risk Score

Malware Insights

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

The PDF contains numerous external URIs and link farm heuristics, indicating a primary function of redirecting users to other resources. The ML classifier strongly flagged this PDF as malicious, and several URLs point to potentially compromised CMS upload directories. While no scripts were extracted, the structure suggests a malicious intent to lure users to external sites, possibly for further exploitation or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9952

Heuristics 5

  • 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://geodeslaboratori.eu/userfiles/files/91970115227.pdf In PDF document text
    • http://allnatureint.com/userfiles/file/gafewese.pdfIn PDF document text
    • https://sanidom.pl/img/file/22501979234.pdfIn PDF document text
    • http://timavoshipsupply.it/userfiles/file/69909833432.pdfIn PDF document text
    • http://vervesimuhub.com/userfiles/file/61543133895.pdfIn PDF document text
    • https://www.brightfieldbusinesshub.co.uk/wp-content/plugins/super-forms/uploads/php/files/nhq5a1sribml8carvo4eh06b7l/jidipekufuwasavuxipoxivi.pdfIn PDF document text
    • http://stylist.in.ua/wp-content/plugins/formcraft/file-upload/server/content/files/160a4b1042b480---43008241686.pdfIn PDF document text
    • http://baharemadinah.com/wp-content/plugins/formcraft/file-upload/server/content/files/16098b249d8e06---7560741138.pdfIn PDF document text
    • https://cursosgratuitosonline.es/wp-content/plugins/super-forms/uploads/php/files/3pemd126n6uiefchmd6hjfv03t/xoxepefazabijogorak.pdfIn PDF document text
    • http://stkvn.ru/wp-content/plugins/super-forms/uploads/php/files/acb503b1fc140bf1eff01d8c4f7afd3f/meremizef.pdfIn PDF document text
    • https://leicht-spb.ru/wp-content/plugins/super-forms/uploads/php/files/0d0651d9cc5a9793c5386196cf7a738d/liwuwojemubapuxe.pdfIn PDF document text
    • https://alfa-clining.ru/wp-content/plugins/super-forms/uploads/php/files/8a0ffef3295748b6eddeb5a5f8d6205a/67130083409.pdfIn PDF document text
    • https://binhruamuinanobac.com/wp-content/plugins/super-forms/uploads/php/files/i0j354sqes65ek06p6n1cntmjq/1874820525.pdfIn PDF document text
    • http://recamonde.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1607316b585b3b---degedasubomatalutad.pdfIn PDF document text
    • http://wijnhuis-vaessen.nl/site/data/ws/files/90416208698.pdfIn PDF document text
    • https://www.westcountrystoves.co.uk/wp-content/plugins/super-forms/uploads/php/files/6605a84be22a8ea1f9ba53de2734cc27/pobevisex.pdfIn PDF document text
    • http://www.radiopopiatej.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b472bc6dfc0---27201020432.pdfIn PDF document text
    • https://takiminsahada.com/wp-content/plugins/super-forms/uploads/php/files/hvuds369hjvfvegtlv7rb4kcpe/62152963810.pdfIn PDF document text
    • https://terravistahometeam.com/wp-content/plugins/super-forms/uploads/php/files/d4ebeadc63cb0f353b7115184181b9c2/64946352208.pdfIn PDF document text
    • https://nationalcardsolutions.com/wp-content/plugins/formcraft/file-upload/server/content/files/160dea4893d4eb---18898423322.pdfIn PDF document text
    • https://www.capitalroofingct.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608776424c3b9---98637720488.pdfIn PDF document text
    • https://fceresources.com/ckfinder/userfiles/files/befevaf.pdfIn PDF document text
    • http://www.hkqi.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bbe62dd2ce3---78814294796.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/fzgW7-mxBc0/uplcv?utm_term=cecelia+ahern+how+to+fall+in+love+pdfPDF 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_off0000f92b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF92B 18800 bytes
SHA-256: b7263b356b8105bb2bbb47650d576982eeae0ea016d2a732f728bfc7cbc6fbaa
font_01_sfnt_off0001283c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1283C 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00014053.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14053 10732 bytes
SHA-256: 9cb02167984f587b3f19eb51a1a8102642c0e6cdb29981617e11b78c2246edde