Malicious PDF — malware analysis report

Static analysis result for SHA-256 3dddfb0ca490bdab…

MALICIOUS

PDF

88.0 KB Created: 2021-09-04 22:29:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-26
MD5: 837ee0e9c0cf08bf8c5ab5bf5caf0f89 SHA-1: 4724772ca30e379ec65c90be17a68a8f8a9e0cb1 SHA-256: 3dddfb0ca490bdaba5e9cdc57526c70969793bed53fdc5f65e3668482738f708
156 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9947

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://k-kompany.ru/wp-content/plugins/super-forms/uploads/php/files/e1eb9727aea216045868526cb22c04e2/1311685739.pdf In PDF document text
    • http://alhouti.com/userfiles/file/feweduw.pdfIn PDF document text
    • http://www.niziointerior.pl/upload/file/jusugotabowizeve.pdfIn PDF document text
    • http://patrick-vallot.com/upload/files/lezofovotoxux.pdfIn PDF document text
    • https://privatecambodiatour.com/userfiles/file/gikalomasopanukoposoki.pdfIn PDF document text
    • https://nhathuydesign.com/wp-content/plugins/super-forms/uploads/php/files/escjakmqnt4t4j2vulgg58f1aa/41005319490.pdfIn PDF document text
    • http://ithaca1966.com/clients/8/85/85e9e0a76fddb83d7689cebc6ab07fae/File/6202072309.pdfIn PDF document text
    • https://netron.pt/app/webroot/media/files/javavunirisovitet.pdfIn PDF document text
    • https://www.rogierstoel.nl/wp-content/plugins/super-forms/uploads/php/files/dt2lt9hrnim9d8h5ku8lidsija/66727650752.pdfIn PDF document text
    • http://katachizu.com/img/news/files/wijaziweroxadenaj.pdfIn PDF document text
    • http://golden-candies.ru/webroot/files/files/mutomabofusuxo.pdfIn PDF document text
    • https://pensionatiitalianiinportogallo.it/wp-content/plugins/super-forms/uploads/php/files/0d517e72f7728a70e41343a8f1cdf847/gazutivip.pdfIn PDF document text
    • https://wurstfargo.com/wp-content/plugins/super-forms/uploads/php/files/0f1afb8ec9ad66c55e6e224734461a06/41612816117.pdfIn PDF document text
    • http://www.belladermeestetica.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160989e015e70c---71102935679.pdfIn PDF document text
    • http://kasargod.net/uploads/file/92608395869.pdfIn PDF document text
    • https://brunoamaranti.it/wp-content/plugins/super-forms/uploads/php/files/mhrjhpdv9qv81nr2c1u777bff7/50503647066.pdfIn PDF document text
    • http://www.ibadirect.com/wp-content/plugins/formcraft/file-upload/server/content/files/161316a1bb06b8---51386581374.pdfIn PDF document text
    • http://linpus.com/app/webroot/userfiles/files/69789685275.pdfIn PDF document text
    • http://graphicon.hu/wp-content/plugins/formcraft/file-upload/server/content/files/1606d3243dce54---nubimaxibemogipoxiboju.pdfIn PDF document text
    • https://aronabritcan.com/userfiles/file/bosezososutoze.pdfIn PDF document text
    • https://www.vibrationmonitoring.asia/wp-content/plugins/formcraft/file-upload/server/content/files/160b2e734655e5---31596300352.pdfIn PDF document text
    • http://topoint.cc/userfiles/fckFile/20210814191228.pdfIn PDF document text
    • https://thic.net/plugin/ce1/ckfinder/userfiles/files/62546968695.pdfIn PDF document text
    • https://purpleleafestatebuyers.com/wp-content/plugins/formcraft/file-upload/server/content/files/160af844050112---fuwut.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/6naE_Nh8_CY/uplcv?utm_term=pdf+portfolio+online+erstellenPDF 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_off0000f82c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF82C 16496 bytes
SHA-256: 1b1fa14fef8c048b3993965ab0b6888daa7f3e7174aa6243c631a0a850b421f6
font_01_sfnt_off0001230c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1230C 10332 bytes
SHA-256: 2bbc5e3ffd57360b90cffe0147d1eba4d91e40217e3c14f2d3bf581bc686322d
font_02_sfnt_off00013a68.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13A68 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1