MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The PDF contains numerous embedded URLs, many pointing to compromised WordPress sites, suggesting a phishing or malware distribution campaign. The ML classifier and ClamAV detection strongly indicate malicious intent. The presence of a link farm on potentially disposable hosting further supports this, likely serving as a lure to a malicious site or a second-stage payload.
Machine Learning
- Nyx PDF Classifier malicious score 0.9942
Heuristics 6
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ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTIONClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
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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://synerhu.ru/uplcv?utm_term=chi+square+test+of+independence+assumptions PDF link annotation
- https://www.criteriainvest.com.br/wp-content/plugins/super-forms/uploads/php/files/fp8aqea3a1fa5puhuqlp62735v/22027746020.pdfIn PDF document text
- http://cohn-vossen.com/wp-content/plugins/formcraft/file-upload/server/content/files/16080d834d216d---vuluravepegom.pdfIn PDF document text
- https://www.erenang.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607e974759c8b---80939947993.pdfIn PDF document text
- https://cradlegold.com/wp-content/plugins/super-forms/uploads/php/files/79bsvp3h4iijsrhm939si2fsnc/94154102238.pdfIn PDF document text
- https://www.swx.global/wp-content/plugins/super-forms/uploads/php/files/3f1c0eb93fc9eb626968500fe8005e3b/31403948086.pdfIn PDF document text
- https://deewo.de/wp-content/plugins/formcraft/file-upload/server/content/files/1606f97e1e0fe1---47166652130.pdfIn PDF document text
- http://biosafety.biz/ckfinder/userfiles/files/ragaxubudinonilunu.pdfIn PDF document text
- http://jrmhandling.nl/upload/file/66505182785.pdfIn PDF document text
- https://dmvassociates.com/wp-content/plugins/super-forms/uploads/php/files/1620f62b8f7a5a8fefca077c3960bb95/89464037281.pdfIn PDF document text
- https://aquariumfargo.com/wp-content/plugins/super-forms/uploads/php/files/471f12b02f2c36f5e65916ecb80996b0/37654454618.pdfIn PDF document text
- https://iamluno.com/wp-content/plugins/formcraft/file-upload/server/content/files/16089baf8a98d9---94883537598.pdfIn PDF document text
- https://weinquartier.at/wp-content/plugins/super-forms/uploads/php/files/523c509ccd3c9e6798c17612ea0ccb6a/96463212233.pdfIn PDF document text
- http://www.scmphotography.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160781e867c0d6---zukuxi.pdfIn PDF document text
- https://mindweave.co.uk/wp-content/plugins/super-forms/uploads/php/files/utqtchdiotktpo0puqnc7pkutk/ruderuzinujanopus.pdfIn PDF document text
- http://bong-dem-long.org/upload/editor/files/rizoxu.pdfIn PDF document text
- http://batiment-tunisie.com/userfiles/file/34897984155.pdfIn PDF document text
- https://medtek.vn/storage/file/tibuxepedabafaposukoj.pdfIn PDF document text
- http://firanywiktoria.pl/uploads/editor/file/60181056391.pdfIn PDF document text
- https://olgapopovaphoto.com/wp-content/plugins/super-forms/uploads/php/files/83c6b527dba9bc289418512c53080a45/pabaxinipuvitizoriwerole.pdfIn PDF document text
- http://vitajeans.com/ckfinder/userfiles/files/sumapulagenopaminumavut.pdfIn PDF document text
- https://www.bluegreenshouseboats.in/wp-content/plugins/formcraft/file-upload/server/content/files/1607711c63f8f3---4330466658.pdfIn PDF document text
- https://asset-books.com/userfiles/file/gununogodik.pdfIn PDF document text
- http://scissortailfarms.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b09909928b1---94313357591.pdfIn PDF document text
- https://terravistahometeam.com/wp-content/plugins/super-forms/uploads/php/files/20457a6df7bd83cd87254e2e2804378c/fopaledogeremesivabomij.pdfIn PDF document text
- https://dermo.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608ff158587da---rimaposekajaves.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_off0000fcb7.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xFCB7 | 17496 bytes |
SHA-256: 8432bb7cef60d485a6f66a8c840d6aadcd6fd41cd12d1bdeb6399b97f7fbc6d1 |
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font_01_sfnt_off00012ac9.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x12AC9 | 11116 bytes |
SHA-256: 0c103dadbde66f38f58e68b4f04edbea956f94882051e6bf6a86dca742c949bc |
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font_02_sfnt_off00014461.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x14461 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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