Malicious PDF — malware analysis report

Static analysis result for SHA-256 7931fd75b98d3564…

MALICIOUS

PDF

80.7 KB Created: 2021-08-19 09:50:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-15
MD5: 4b6ba01c17e318c5564961ef6a97c154 SHA-1: 9a57b61a075ce58e68e7efb589297dfb90d25664 SHA-256: 7931fd75b98d3564f97421603120e3507730b95d9fe77f5376972386e34a18ba
156 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9989

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 http://richardsonfamilyreunion.net/clients/7/79/79e100fddb184f5a3447a495e7c481fb/File/28769972030.pdf In PDF document text
    • https://sdyh.gr/wp-content/plugins/super-forms/uploads/php/files/9j4hn3vu33a71vfmgdmmcjj760/kitisebij.pdfIn PDF document text
    • https://www.temsilcisitesi.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608bc13435aaf---83859647989.pdfIn PDF document text
    • https://www.kunapak.com/wp-content/plugins/super-forms/uploads/php/files/vo2vgfnrisg915ckj2vvso9e0c/76176925717.pdfIn PDF document text
    • https://mimpiindah1.com/contents//files/22265264255.pdfIn PDF document text
    • http://eaeocs.com/clients/c/c7/c75ed17bfa54634cfc1039f1b599a7e7/File/renavosepeguluxiroji.pdfIn PDF document text
    • http://chroscina.com/userfiles/file/20847767147.pdfIn PDF document text
    • https://www.bouldersudbury.org/wp-content/plugins/formcraft/file-upload/server/content/files/16076a1f743327---53611440170.pdfIn PDF document text
    • https://bucatariizidite.ro/printuri-fi/files/71125751242.pdfIn PDF document text
    • http://casier-a-bouteilles.com/file/gefonarasa.pdfIn PDF document text
    • https://agrotehholding.ru/wp-content/plugins/super-forms/uploads/php/files/8e4c11947ffaa1461c8b76c9b2205e25/vepitanarowuka.pdfIn PDF document text
    • http://capthepcongtrinh.com/uploads/news/files/19590265401.pdfIn PDF document text
    • http://loca-granderoue-montaletang.com/ckfinder/userfiles/files/14904878260.pdfIn PDF document text
    • http://www.hj-bouwt.be/wp-content/plugins/formcraft/file-upload/server/content/files/1609c6d61c4e7e---bowiveku.pdfIn PDF document text
    • https://termofriz.rs//files/85200249127.pdfIn PDF document text
    • https://aliencosmicexpo.com/wp-content/plugins/formcraft/file-upload/server/content/files/160922eebbba41---23275204371.pdfIn PDF document text
    • https://www.harasportcenter.com/wp-content/plugins/super-forms/uploads/php/files/6ksujgomtqcb1tlttif3i7oaj1/64555794496.pdfIn PDF document text
    • http://hkacca.com/userfiles/wakomamikulokigawakotobe.pdfIn PDF document text
    • https://frontiersneurophotonics.org/wp-content/plugins/formcraft/file-upload/server/content/files/1/160af97384c7b9---lenosa.pdfIn PDF document text
    • http://abaj.cz/UserFiles/File/92360519275.pdfIn PDF document text
    • https://duext.com/wp-content/plugins/super-forms/uploads/php/files/dec88d3e36238e14fa1f09249ecffce8/29748115985.pdfIn PDF document text
    • https://centrobrands.com/wp-content/plugins/super-forms/uploads/php/files/18b275729cbd32981357371600f833fe/migubisafiwuxigirazawe.pdfIn PDF document text
    • https://pfgmm.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/1606d0b8749d61---90318372363.pdfIn PDF document text
    • http://www.inhd.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1608f5f3fc63c5---barososojugatofubebizewo.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/S30rS-6n6vg/uplcv?utm_term=download+videos+from+openload.co+onlinePDF 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_off0000d820.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD820 16664 bytes
SHA-256: 243a4f563dee443fee03c19377f281d5b597ec0ad5ad3746dc467d8bd5ddab72
font_01_sfnt_off00010320.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10320 10900 bytes
SHA-256: a61ea1fed82d0674f252249e6126c50b6b6d7f6aa9f02e56933dece4971de758
font_02_sfnt_off00011c5b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11C5B 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1