MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1204.002 Malicious Link
The PDF file was identified as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains numerous embedded URLs, many pointing to compromised WordPress sites or disposable hosting, suggesting it functions as a link farm. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' specifically highlights the non-clustered link farm nature of the document on disposable hosting, with UTM parameters indicating potential tracking or phishing campaigns.
Machine Learning
- Nyx PDF Classifier malicious score 0.9956
Heuristics 6
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ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTIONClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
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PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARMPDF 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.
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Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARMSmall 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.
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External URI info PDF_URIPDF contains an external URL action
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Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTALThe 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.
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Embedded URL info EMBEDDED_URLOne 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://irlanc.ru/uplcv?utm_term=hedwig%27s+theme+sheet+music+clarinet PDF link annotation
- https://alshamiltrading.com/alshamilfiles/file/68033465669.pdfIn PDF document text
- https://hoakhanh.vn/uploads/image/files/vavoke.pdfIn PDF document text
- http://starrsgazette.com/admin/images/file/mopowasujilizix.pdfIn PDF document text
- https://htfcompact.com/wp-content/plugins/super-forms/uploads/php/files/617e24dd56e99a545dace9a7a060b3dd/23031806120.pdfIn PDF document text
- http://inwama4.vn/webroot/img/files/94721196017.pdfIn PDF document text
- https://motelandratecuci.ro/userfiles/file/pepari.pdfIn PDF document text
- http://eduomania.com/wp-content/plugins/formcraft/file-upload/server/content/files/160aa21654336a---97301433774.pdfIn PDF document text
- http://xn--42-6kcdlkbomh7beggito5p.xn--p1ai/userfiles/file/11408364363.pdfIn PDF document text
- http://purofirstli.net/userfiles/file/nejaporopifirusizadig.pdfIn PDF document text
- https://angkagenap.com/contents//files/61809062774.pdfIn PDF document text
- http://gloria-eurex.com/24529850525.pdfIn PDF document text
- http://galgalesh.com/userfiles/file/zalekazunusolo.pdfIn PDF document text
- http://beiks.info/public/file/91778684845.pdfIn PDF document text
- https://avgdesign.com/userfiles/file/39406162344.pdfIn PDF document text
- http://tfh-filter.hu/_user/file/leruromujoz.pdfIn PDF document text
- https://www.davidcosz.de/wp-content/plugins/super-forms/uploads/php/files/khuo23m0eler1qdsa996u79ls0/zilimived.pdfIn PDF document text
- https://www.conkite.com/wp-content/plugins/super-forms/uploads/php/files/39235c35bf4201c7f88d0b91c2de0856/19960016809.pdfIn PDF document text
- http://contentworks.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/1606d26bc62308---96670011461.pdfIn PDF document text
- https://emergent-partners.com/wp-content/plugins/formcraft/file-upload/server/content/files/16075f1e48ce9a---poxeremetufoposo.pdfIn PDF document text
- https://dazzlin.co.uk/wp-content/plugins/super-forms/uploads/php/files/4886f4f9e314581d57618e2769868aec/97508440818.pdfIn PDF document text
- https://studiogreenwich.ru/wp-content/plugins/super-forms/uploads/php/files/9824abfd529e2f49bd1155937de54085/11859375615.pdfIn PDF document text
- http://symbioticlifetech.org/attfile/fckimg/file///202105306598_365523651.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.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0001102e.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1102E | 10908 bytes |
SHA-256: 1edb806d059950d590216f4856b772e89a772b9f48175e7ec7119b0ed623f960 |
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font_01_sfnt_off00012910.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x12910 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_02_sfnt_off00014122.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x14122 | 18420 bytes |
SHA-256: 0b48b8c3b00e710ec7771d1d8fd879b3c85823c0f4544086aab7f1f49b1741cc |
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