Malicious PDF — malware analysis report

Static analysis result for SHA-256 a14483d63ef38c6d…

MALICIOUS

PDF

91.6 KB Created: 2021-07-04 13:26:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: c3bf2091c8239acd745ca197af815a46 SHA-1: c800060c0955f030605adb40440f72b163f383e0 SHA-256: a14483d63ef38c6d6ac3593a1a809e307caaaca419fc8de856f89ca39c330375
156 Risk Score

Malware Insights

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

This PDF file was flagged by a machine learning classifier and ClamAV as malicious. It contains numerous embedded URLs pointing to compromised websites, many of which are hosted on disposable domains or use UTM parameters, suggesting a link farm or phishing lure. The file's structure and the presence of these links indicate an attempt to redirect the user to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9930

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://huntic.ru/uplcv?utm_term=parking+identification+placard PDF link annotation
    • https://whitelightdesign.com/wp-content/plugins/super-forms/uploads/php/files/790241e7e214760d27c6e1059aa1a0dc/72969648798.pdfIn PDF document text
    • https://deewo.de/wp-content/plugins/formcraft/file-upload/server/content/files/160c685a12b94e---25368352437.pdfIn PDF document text
    • http://daimarconstrucciones.com/images/admin/file/42595725813.pdfIn PDF document text
    • https://deconkhoemanh.com/wp-content/plugins/super-forms/uploads/php/files/q8trup89n2chathu8ovsqsn1k3/xetekuvifagevusoxoluni.pdfIn PDF document text
    • http://barrarioservicos.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160beff1e9a263---xejefabilud.pdfIn PDF document text
    • https://damiel.eu/userfiles/file/wujamolinivit.pdfIn PDF document text
    • https://snabavto.com/wp-content/plugins/formcraft/file-upload/server/content/files/16080fd3484759---gixugudaze.pdfIn PDF document text
    • http://visualpaint.com/wp-content/plugins/formcraft/file-upload/server/content/files/160781e0c8dbef---79331572515.pdfIn PDF document text
    • https://414movement.com/wp-content/plugins/super-forms/uploads/php/files/757c7a9386d55868802a708cc3613510/vixuzozibakojefezugu.pdfIn PDF document text
    • https://aldea.work/wp-content/plugins/super-forms/uploads/php/files/28efe954bc9eb530947221a503622f59/zifagoguvuz.pdfIn PDF document text
    • https://www.temsilcisitesi.com/wp-content/plugins/formcraft/file-upload/server/content/files/160723805b9407---bawovijipudugiful.pdfIn PDF document text
    • http://lynhuagiasi.com/Images_upload/files/wejewudufimolupesedaj.pdfIn PDF document text
    • http://xn--2vxr09c6mc.tw/CKEdit/upload/files/90768106945.pdfIn PDF document text
    • http://sparan-art.ru/ckfinder/userfiles/files/83542504550.pdfIn PDF document text
    • https://unitedcardsolutions.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b1b9148b533---rugozowiboxevovulab.pdfIn PDF document text
    • https://popa.com.br/wp-content/plugins/super-forms/uploads/php/files/39419f592d129a9d632015e236f4f7e7/volubexav.pdfIn PDF document text
    • https://sg-design.top/wp-content/plugins/super-forms/uploads/php/files/cbd9397d809adf3e677f9cbbdcd5d61e/bujapanuninelikogajiredoj.pdfIn PDF document text
    • http://plusbateria.com/wp-content/plugins/formcraft/file-upload/server/content/files/16092521c7f268---tifoladojuwerexesusilelik.pdfIn PDF document text
    • https://locktactyuma.com/userfiles/file/meponokoxuxetupitunase.pdfIn PDF document text
    • https://amesmedicalservices.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607f282c7d270---lunawasavuxanofojutoje.pdfIn PDF document text
    • https://travels-ukraine.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b9aa4fe8b68---57437447887.pdfIn PDF document text
    • https://lakeshoresmilesdentistry.com/wp-content/plugins/super-forms/uploads/php/files/f2210iagpqo07kdrhl9o884817/46105698973.pdfIn PDF document text
    • http://bronia.org/userfiles/file/54394071643.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_off000102c0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x102C0 17420 bytes
SHA-256: 9fe0b36bc35f3c74fe7c5e84c242a43110c678a0cbea05ffe36488e0f3dc000a
font_01_sfnt_off00013097.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13097 10720 bytes
SHA-256: 693668f04cfc9e03350cbc9a4bd3d28860e6db60f1c5339996354cee2f4a2486
font_02_sfnt_off0001491a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1491A 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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