MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The sample is a PDF file identified as malicious by ML classifiers and ClamAV. It functions as a link farm, containing numerous URLs pointing to external sites. Several of these URLs are hosted on compromised WordPress upload directories, indicating a potential distribution point for malicious content or phishing lures. The PDF structure itself does not contain readable content, but the heuristics strongly suggest a malicious intent related to link farming and potential exploitation.
Machine Learning
- Nyx PDF Classifier malicious score 0.9974
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://www.privathospitaletkollund.com/ckfinder/userfiles/files/77608979938.pdf In PDF document text
- http://agriturismolionsfarm.it/userfiles/files/zuvowebajowitolofirov.pdfIn PDF document text
- http://animalscipublisher.com/files/upfiles/file/57903909565.pdfIn PDF document text
- https://dedywiredja.com/wp-content/plugins/formcraft/file-upload/server/content/files/16084bc8413570---1985772653.pdfIn PDF document text
- https://mancomunidadvaldizarbe.com/userfiles/files/loxid.pdfIn PDF document text
- http://az4group.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1609de9ba2473f---1617666927.pdfIn PDF document text
- https://relaxationplusmn.com/wp-content/plugins/super-forms/uploads/php/files/71c58d0abe9257cfe9a9e0c24ec0a35d/dasaganima.pdfIn PDF document text
- http://madonnina.info/userfiles/files/jizezemapulopowusewis.pdfIn PDF document text
- http://kennyre.com/wp-content/plugins/formcraft/file-upload/server/content/files/161210106c0cbd---pizizi.pdfIn PDF document text
- http://elyriacatholic1970.com/clients/7/79/79c6984f8945646ae1b55d50a6b4dbab/File/dibevatakidudo.pdfIn PDF document text
- http://thuexedanang247.com/uploads/image/files/bikipafide.pdfIn PDF document text
- https://www.numberoneporthill.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/1607022039a3dd---61795644094.pdfIn PDF document text
- http://twfbs.com/ckfinder/userfiles/files/5608753511.pdfIn PDF document text
- https://vntdc.com/upload/fck/file/98863724041.pdfIn PDF document text
- https://vieclamday.com/userfiles/file/rimimagigi.pdfIn PDF document text
- https://yarsan.ru/wp-content/plugins/super-forms/uploads/php/files/a8405f60d152df64df3e79c5bd27105f/tesupisid.pdfIn PDF document text
- http://aimic.com/userfiles/file/45406344595.pdfIn PDF document text
- https://www.hagensmarketing.com/wp-content/plugins/formcraft/file-upload/server/content/files/16072fa385c495---81194752340.pdfIn PDF document text
- https://www.alphaveneers.com/wp-content/plugins/super-forms/uploads/php/files/096f4cf6e102b05610ddcb1446eab9dd/xonovopazogibup.pdfIn PDF document text
- https://jlgardner.org/home/jlg/public_html/ckfinder/userfiles/files/48572714239.pdfIn PDF document text
- https://www.marvistasales.com/wp-content/plugins/super-forms/uploads/php/files/ae1d88a3389fa65d4f16103321984346/8362394.pdfIn PDF document text
- http://xn--90aoaidn.xn--p1ai/ckfinder/userfiles/files/88305438862.pdfIn PDF document text
- http://slsnn.ru/content/files/famoziduwafu.pdfIn PDF document text
- https://mattweidnerlaw.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607bc805e2f45---76760792284.pdfIn PDF document text
- https://feedproxy.google.com/~r/Uplcv/~3/LPIa9PGmDLg/uplcv?utm_term=landau+lifshitz+volume+6+pdfPDF 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.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000dae2.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDAE2 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_01_sfnt_off0000f2f4.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF2F4 | 19448 bytes |
SHA-256: 18e2eedbf6e4b89b595acfacfa541b8aaeae6862d5ebae5ef24a06b22d17c764 |
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font_02_sfnt_off0001260e.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1260E | 11016 bytes |
SHA-256: 0d41470a738ee8544477cbf6dec2fbdb70046ff7047e1a768bc3d2213a793205 |
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