Malicious PDF — malware analysis report

Static analysis result for SHA-256 c697188a3244a707…

MALICIOUS

PDF

79.6 KB Created: 2021-07-31 00:50:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: a403afe2750e019a6590c7082a0aa8cc SHA-1: 98d362cadb2fcc968f279926b493f28aabce07aa SHA-256: c697188a3244a707c6024def8095505417f7e068452a17908637eb300e500ecb
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was detected as malicious by ClamAV and an ML classifier. It contains a link farm pointing to multiple compromised WordPress sites, suggesting an attempt to lure users to malicious content. The presence of external URIs and link farms indicates a phishing or malware distribution vector, likely delivered as a spearphishing attachment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9987

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://huntic.ru/uplcv?utm_term=como+pasar+mililitros+a+gramos PDF link annotation
    • http://www.megasaludips.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c5fe4f4cb3d---dilukuleligevini.pdfIn PDF document text
    • https://pensiuneavlasin.ro/wp-content/plugins/super-forms/uploads/php/files/inq2n1q63ma5mvm02jful9s889/45245330080.pdfIn PDF document text
    • https://realestateconnect.biz/wp-content/plugins/super-forms/uploads/php/files/l4bn8e39utvocote1ie5ma1l25/96566183522.pdfIn PDF document text
    • http://runbo.net/upfiles/files/16257389084194.pdfIn PDF document text
    • http://shsclassof1970.org/clients/872719/File/67825155514.pdfIn PDF document text
    • http://www.farparts.cl/wp-content/plugins/formcraft/file-upload/server/content/files/160eca963bc889---wupegizidezo.pdfIn PDF document text
    • http://m4krichmond.org/clients/3/3b/3bf4c986be49c21931b3574e72fd8103/File/9093709760.pdfIn PDF document text
    • https://beaufortbond.com/wp-content/plugins/super-forms/uploads/php/files/099bed3cb15d50df51fb41e4dd055132/11197577309.pdfIn PDF document text
    • http://kleinschaden.expert/userfiles/file/78338488793.pdfIn PDF document text
    • https://rhodium.vn/uploads/news_file/buloruvuverojatesa.pdfIn PDF document text
    • https://augsburger-dartliga.de/uploads/file/zoxifejuxi.pdfIn PDF document text
    • https://www.cukoyem.com.tr/wp-content/plugins/super-forms/uploads/php/files/8unpf9ds1v8hh14be5c1fqdqg0/nigugurepum.pdfIn PDF document text
    • http://www.siscard.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c18a49b1687---4339162264.pdfIn PDF document text
    • http://bazatalty.pl/wp-content/plugins/super-forms/uploads/php/files/8ba42494aa2515972e8d0af4a22c5808/vijirisenusiforiged.pdfIn PDF document text
    • https://www.beewellrx.com/wp-content/plugins/super-forms/uploads/php/files/tmp/rujavuxoxoxamuvekimetot.pdfIn PDF document text
    • https://alutat.com/data/file/23937133592.pdfIn PDF document text
    • http://inlikeflintlogistics.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609209f8126b6---bogasujojokik.pdfIn PDF document text
    • https://web-sila.ru/wp-content/plugins/super-forms/uploads/php/files/d94bc122dbb9e43d7a93dbf3cc80a854/80566033937.pdfIn PDF document text
    • https://bahceneryaman.net/public/content-images/files/51110899716.pdfIn PDF document text
    • http://shssailors1969.com/clients/3/36/366f78b21138e0f8005dfe6cc5e09e30/File/vugegugapigogolokulusale.pdfIn PDF document text
    • http://gingerwooddesign.com/wp-content/plugins/formcraft/file-upload/server/content/files/16082c22a6b865---90571239744.pdfIn PDF document text
    • https://vildmarksjagt.dk/userfiles/file/tigeniwa.pdfIn PDF document text
    • https://elpmarketing.ca/wp-content/plugins/super-forms/uploads/php/files/e5a679e962981030d44ef0d9cef84717/37525956254.pdfIn PDF document text
    • http://birons.net/wp-content/plugins/super-forms/uploads/php/files/4ec12a19d2c7b02863f3aa5d27741d52/dimufoxozap.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_off0000d48d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD48D 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000ec9f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC9F 16848 bytes
SHA-256: 61f5feb9b8ac5dbe1489322cb9cf97b4630f109ea7aa9ebd6225cbd5360ce64d
font_02_sfnt_off000116b3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x116B3 10388 bytes
SHA-256: f3f2339a1689d49b0cf59a63269246681e9eca5c9899ab0333dde2dd0b1cda8a

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