Malicious PDF — malware analysis report

Static analysis result for SHA-256 5da8c6ccb6513812…

MALICIOUS

PDF

129.0 KB Created: 2021-06-25 19:18:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: 6e76fc4a364fbb244a5865c4e164cc04 SHA-1: dddf276b762dde7713f110d57f70adbb5b05b044 SHA-256: 5da8c6ccb651381235b962ea722faf896c58fc1c8c7f316fda9a16ec86448274
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF file was detected as malicious by ClamAV and an ML classifier. It functions as a link farm, containing numerous URLs pointing to potentially compromised websites. The presence of multiple external URIs and the 'link farm' heuristic strongly suggest this document is intended to redirect users to malicious sites, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9957

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://medvor.ru/uplcv?utm_term=course+in+miracles+lesson+57 PDF link annotation
    • http://bridgesonthepark.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607b292cc6d4d---32355708777.pdfIn PDF document text
    • http://foto-klub.dk/userfiles/file/zudefaluwubemuwavet.pdfIn PDF document text
    • http://warraichmeats.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607041cf24370---59659486547.pdfIn PDF document text
    • https://refundsrefunds.com/wp-content/plugins/formcraft/file-upload/server/content/files/16074aa822cbf0---25538470734.pdfIn PDF document text
    • http://nuyewrecruitment.com/wp-content/plugins/super-forms/uploads/php/files/6501ea65d06408b7c2b8e61628357530/63680618822.pdfIn PDF document text
    • https://mygamedaysports.com/wp-content/plugins/super-forms/uploads/php/files/9409242186d120db9dd96261989234ec/kaxafibuzaja.pdfIn PDF document text
    • http://socialbomjesus.org.br/wp-content/plugins/formcraft/file-upload/server/content/files/16086cb7adb85a---16183716442.pdfIn PDF document text
    • https://www.numberoneporthill.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/16077a383b46dd---84970726585.pdfIn PDF document text
    • http://sakaryakasaplarodasi.org/userfiles/file/lawalavukixuxadinufovi.pdfIn PDF document text
    • http://ash-graphy.com/userfiles/file/81809192497.pdfIn PDF document text
    • https://www.clubmanizales.com.co/wp-content/plugins/formcraft/file-upload/server/content/files/160b79ed384458---kigepiguboxesi.pdfIn PDF document text
    • https://costumeworld.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a807f2bc5e2---52611491775.pdfIn PDF document text
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607b8a170f3a6---tulapitiwi.pdfIn PDF document text
    • http://hayatteknoloji.com/webimage/file/32530134245.pdfIn PDF document text
    • https://nobleanimalsanctuary.org/wp-content/plugins/super-forms/uploads/php/files/tmp/93206118098.pdfIn PDF document text
    • http://www.hypnotiseur.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b9fa698a75e---domuxepoxirur.pdfIn PDF document text
    • https://al-farh-iq.com/upload/userfiles/file/22241641083.pdfIn PDF document text
    • http://coming-c.com/userfiles/file/52761966417.pdfIn PDF document text
    • http://itssilvertime.com/clients/2/24/24efe347a73a8ce028152bf895bc11a7/File/gisap.pdfIn PDF document text
    • https://realestateconnect.us/wp-content/plugins/super-forms/uploads/php/files/uhas4pune3ib6pbsnmnfiifr15/62144153773.pdfIn PDF document text
    • https://csom.cz/wp-content/plugins/super-forms/uploads/php/files/179dc8c8c7ff1790de6d3ccae00f5d86/28950416234.pdfIn PDF document text
    • http://audiencefertilization.com/fckeditor/editor/filemanager/connectors/php/userfiles/file/31974874498.pdfIn PDF document text
    • http://ssteelelaw.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/34590359345.pdfIn PDF document text
    • https://bursaceviritercume.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608b790de0614---wijenulozafujawakebalon.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_off00019aed.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x19AED 10608 bytes
SHA-256: a5f9bfd2ceffa16b2a7ba3054417dd44f31d772d8d6e7d1d12dcb831687b7179
font_01_sfnt_off0001b33b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1B33B 16580 bytes
SHA-256: 7f503a55b64cc139b51b774ec58f78bdae6a7ed9b1d136d7c7f5cca5725b1b55
font_02_sfnt_off0001de39.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1DE39 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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