Malicious PDF — malware analysis report

Static analysis result for SHA-256 d119466521f17200…

MALICIOUS

PDF

90.4 KB Created: 2021-06-27 00:19:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: 5689cdc7f302b4d4b797fbf46c778345 SHA-1: bd404be1c0ba0ad8185d6160a3c1d1ddeb07b1b4 SHA-256: d119466521f1720089e233cb58291d094e0e88e751b2e6ebaf3f821162f61b90
156 Risk Score

Malware Insights

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

The PDF contains numerous links pointing to websites hosted on compromised CMS uploads and disposable domains, indicative of a link farm used for phishing or malware distribution. ClamAV detection and ML classification strongly suggest malicious intent. The document body is heavily obfuscated and appears to be generated by wkhtmltopdf, lacking direct user-readable content but containing embedded URLs.

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://psg66.ru/admin/ckfinder/userfiles/files/wanijubugiw.pdf In PDF document text
    • http://africansafaris-spain.com/FCKeditor/editor/filemanager/connectors/php/connector.php?Command=FileUpload&Type=File&CurrentFolder=%2Ffile/xezugetozejaxove.pdfIn PDF document text
    • http://watthaistuttgart.de/userfiles/file/jatigavovanuvu.pdfIn PDF document text
    • http://humanitool.ru/userfiles/file/35252335574.pdfIn PDF document text
    • http://thehawthornnyc.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a254a844bd5---xowarojisufotavid.pdfIn PDF document text
    • http://bazatalty.pl/wp-content/plugins/super-forms/uploads/php/files/430949e441d76aecf0e406b908464bee/pasuwolelawumawedij.pdfIn PDF document text
    • http://architects-desk.com/uploadsfile/woduzerisizogogelax.pdfIn PDF document text
    • http://sciattella.net/images/file/fobukaxegazegalipalufupat.pdfIn PDF document text
    • https://dtcprojects.com.au/wp-content/plugins/super-forms/uploads/php/files/vauobu03p23qdjrd4ubsli4urh/79558736684.pdfIn PDF document text
    • https://www.swx.global/wp-content/plugins/super-forms/uploads/php/files/12d4e29641bdd5f287586dc90cd18e45/zakegunaxavavedojub.pdfIn PDF document text
    • https://areshin.ru/wp-content/plugins/super-forms/uploads/php/files/12926bba5368cc85b98f053364416a28/zukifemefalikapezumeguzir.pdfIn PDF document text
    • http://magyaringatlanadatbazis.hu/dev/_user/file/josidupanuvivazodetuxuzor.pdfIn PDF document text
    • http://alpha-cp.com/userfiles/file/zefejutiwekusofukepudud.pdfIn PDF document text
    • https://www.rekalibracija.com/wp-content/plugins/super-forms/uploads/php/files/8f251fa2109747e49527b965d4b994f8/tiwuwajuvez.pdfIn PDF document text
    • http://emailreceptionist.net/userfiles/file/zirat.pdfIn PDF document text
    • http://dj-venci.com/uploads/pages/files/lafaziwakejesava.pdfIn PDF document text
    • https://samiznojmo.cz/wp-content/plugins/super-forms/uploads/php/files/1e211c75bec7b7b30a4757b595816747/13633039005.pdfIn PDF document text
    • http://slowjamsundays.com/wp-content/plugins/formcraft/file-upload/server/content/files/160993fa5ddf9c---14121468934.pdfIn PDF document text
    • http://unipell.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160b487c35778a---10452740853.pdfIn PDF document text
    • http://www.suffaheducation.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a39a4036fd4---7498972167.pdfIn PDF document text
    • http://objetivovender.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c351cee617f---23788551766.pdfIn PDF document text
    • http://angelcabrera.com/FCKfiles/file/godugapidikomivetekegefo.pdfIn PDF document text
    • https://www.americanapi.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607765fab2ba1---16608902146.pdfIn PDF document text
    • https://amalighting.com/wp-content/plugins/super-forms/uploads/php/files/1b0fcf75074a7fc0b390154e2f97976f/lazopunedenetijetidije.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/zMnd8XtcwSM/uplcv?utm_term=how+to+take+a+cutting+from+a+buddleiaPDF 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_off0000fb6e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFB6E 11060 bytes
SHA-256: 431065354edcf652b18808ea2acf5c9e035ef9fffed9c2728180625cc8cf43fc
font_01_sfnt_off000114f6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x114F6 17356 bytes
SHA-256: 117a6b4bca3f3a6678b049eb755bbe40ee628ec02aedeaee270a40cc4f661456
font_02_sfnt_off00014281.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14281 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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