Malicious PDF — malware analysis report

Static analysis result for SHA-256 b03bad2a6cce3813…

MALICIOUS

PDF

85.4 KB Created: 2021-06-26 13:44:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: 7569f94d0cdc797768b0304fda33faba SHA-1: 1b119e1bc29572d1294b926acb0820c5555ebf0c SHA-256: b03bad2a6cce3813f76bcd2438776628829008804cfdf983fb1546dd17c9a8a4
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 a link farm pointing to multiple compromised CMS upload storage locations and disposable hosting, suggesting an attempt to distribute malicious content or conduct phishing. The presence of numerous external URIs and the PDF_SEO_DISPOSABLE_LINK_FARM heuristic indicate a focus on directing users to external, potentially harmful, sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9956

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://atlastoursntravels.com/userfiles/file/basateluzupufipoworew.pdf In PDF document text
    • https://nscs.org/wp-content/plugins/super-forms/uploads/php/files/55c02d7888a33a7fc0fbc547f7b86781/30630002771.pdfIn PDF document text
    • http://divorce-difficile.fr/userfiles/file/xofagufi.pdfIn PDF document text
    • http://ceraunavoltapizzeria.it/userfiles/files/mijadajug.pdfIn PDF document text
    • https://www.novet.de/wp-content/plugins/formcraft/file-upload/server/content/files/160b9a2f62b171---vonafipuwukarupulabur.pdfIn PDF document text
    • http://akgikorea.com/file_upload/fck_upfile/file/rodaxaxerevafuregep.pdfIn PDF document text
    • https://georgiamusicpartners.org/wp-content/plugins/super-forms/uploads/php/files/a78030dba196e546a6a838e29e6dcab0/votubetajalazudodo.pdfIn PDF document text
    • http://zonweringnederland.com/ckfinder/userfiles/files/92216090325.pdfIn PDF document text
    • http://allegroescrow.com/wp-content/plugins/formcraft/file-upload/server/content/files/16086f71a92ba6---92026400653.pdfIn PDF document text
    • http://caudafotografia.com/userfiles/files/28607456851.pdfIn PDF document text
    • https://maydongy.com/wp-content/plugins/super-forms/uploads/php/files/jvbg0v0r0ilqcabo4pmdiq03ul/kodemelopefeko.pdfIn PDF document text
    • https://www.actionconstructionjax.com/wp-content/plugins/super-forms/uploads/php/files/5e26429eb319ccdad3ffa9577ec1c453/7218531012.pdfIn PDF document text
    • https://wcdt.co.th/wp-content/plugins/super-forms/uploads/php/files/vn9cd157cefj66qsit2qf6d2s3/siwirena.pdfIn PDF document text
    • http://mobydick-band.de/fckdata/file/13618395935.pdfIn PDF document text
    • http://ptk-astana.kz/wp-content/plugins/super-forms/uploads/php/files/e6f22579747d38546a163a669e45aeff/mafobi.pdfIn PDF document text
    • http://phillipwhiting.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607bb0a1e4d20---37343605310.pdfIn PDF document text
    • http://banghetretunhien.com/media/ftp/file/rononejake.pdfIn PDF document text
    • http://grani-tonkogo-mira.ru/wp-content/plugins/super-forms/uploads/php/files/e67e2bac9519a84d1717ad52ac1bdf08/5586524620.pdfIn PDF document text
    • https://sonarmusic.hu/up_image/file/zedofibisag.pdfIn PDF document text
    • https://gtsonline.nl/wp-content/plugins/super-forms/uploads/php/files/np1t462110i02ts0oh28l2j0j7/zofulitosezagukiwewagidu.pdfIn PDF document text
    • https://sg-design.top/wp-content/plugins/super-forms/uploads/php/files/a09d2de127eb050863d7984daa95d3c4/gogudomeg.pdfIn PDF document text
    • https://readxyz.org/wp-content/plugins/super-forms/uploads/php/files/d36e4974c49bf9b6fcda13e68443851d/3020100439.pdfIn PDF document text
    • http://www.ausafrica.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/1609b624c3b31a---96742717550.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/GLLx1DTH0VQ/uplcv?utm_term=my+last+duchess+meaning+line+by+linePDF 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_off0000eaa6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEAA6 16688 bytes
SHA-256: 2e72f420d995cc5b62d7a732c83eceb9d084bebd1f290079f09423a5b739beeb
font_01_sfnt_off00011589.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11589 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00012da0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12DA0 10944 bytes
SHA-256: 1f3dd219206adbb099556d539af80bb7a6dd578b731fcffe18f4e26649002142