Malicious PDF — malware analysis report

Static analysis result for SHA-256 0d3f9f9263ec6409…

MALICIOUS

PDF

80.0 KB Created: 2021-10-10 02:20:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-14
MD5: ccf3254a91ca465d4abf56b31c366e19 SHA-1: 181f762e92a6c37663ce95c23cb57db7845788de SHA-256: 0d3f9f9263ec6409f42b0aa0b7dc29fa4a8f84c39831e452680ee6c9c27a08eb
164 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was detected as malicious by ClamAV and flagged by an ML classifier. It contains embedded JavaScript and functions as a link farm, directing users to numerous external PDF files hosted on various domains, some of which appear to be compromised. The presence of embedded JavaScript suggests an attempt to execute malicious code, likely to facilitate further compromise or redirect users to phishing sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

Heuristics 7

  • 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.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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://sasalidayanisma.org/uploads/file/jevibamixuxepifo.pdf In PDF document text
    • https://optical-axis.com/uploads/files/202109290248363925.pdfIn PDF document text
    • http://chelseacarpet.com/ckfinder/userfiles/uploads/xonenidugelijelitefekogiw.pdfIn PDF document text
    • http://massimomoroni.it/userfiles/files/foxukugek.pdfIn PDF document text
    • http://unipell.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1614a0cb2c0ead---42147386774.pdfIn PDF document text
    • https://uetty.xyz/js/ckfinder/userfiles/files/69676017366.pdfIn PDF document text
    • http://herfon-machinery.com/images/ckfinder/files/20210918115317.pdfIn PDF document text
    • http://www.rebranded.tv/wp-content/plugins/formcraft/file-upload/server/content/files/1613b54ae67256---18733688099.pdfIn PDF document text
    • https://lmcmanager.com/ckfinder/userfiles/files/sewewoxetigotuxirunasikun.pdfIn PDF document text
    • http://eko-inwest.eu/upload/file/todirites.pdfIn PDF document text
    • http://chemicalengineers.ie/images/fewokenufulefazivuz.pdfIn PDF document text
    • https://avantkart.com/wp-content/plugins/super-forms/uploads/php/files/j187nr92dutt10815v6b896jm5/45115292505.pdfIn PDF document text
    • http://brenderup.ro/mm/file/24819278183.pdfIn PDF document text
    • http://dui-antidote.net/images/userfiles/file/tusawudekolulaw.pdfIn PDF document text
    • http://valkexclusief.reviews/app/webroot/files/userfiles/files/73633295897.pdfIn PDF document text
    • https://www.democratum.com/wp-content/plugins/super-forms/uploads/php/files/21c8631932c6d1075f0a91073f095ed4/20588080909.pdfIn PDF document text
    • http://519pf.com/userfiles/files/bevupaxunutegagizofi.pdfIn PDF document text
    • https://marblobath.com/app/webroot/img/files/30039682245.pdfIn PDF document text
    • http://kocavietnam.com/upload/files/govaworego.pdfIn PDF document text
    • https://zebcom.in/userfiles/file/dapigufok.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/3CAf4wW3hvY/uplcv?utm_term=how+to+get+free+robux+on+chromebook+2021PDF 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_off0000d0b6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD0B6 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000e8c8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE8C8 18120 bytes
SHA-256: 307fc34e7121790ee9d84ee72bc30340142e5ad61e4e0845ab566cb7ab088152
font_02_sfnt_off00011866.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11866 11120 bytes
SHA-256: dc789d436377c0903e25ffb09d10fccefbd047b97ee0178449edfcdeaaf56d38