MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The PDF was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. It contains numerous embedded URLs, many pointing to compromised CMS uploads or disposable hosting, suggesting a link farm designed to redirect users. The presence of external URI heuristics and the ML classification strongly indicate a phishing or malware distribution attempt.
Machine Learning
- Nyx PDF Classifier malicious score 0.9916
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://profipreklady.cz/www/ckfinder/userfiles/files/najenamalosev.pdf In PDF document text
- http://stapper.de/sites/default/files/userfilesfile/sozasosipulizobazoge.pdfIn PDF document text
- http://clearlakesd.org/wp-content/plugins/formcraft/file-upload/server/content/files/16136c6b49c777---16164969956.pdfIn PDF document text
- http://buzmakov-ua.ru/admin/ckfinder/userfiles/files/xivebuf.pdfIn PDF document text
- http://toeicspeaking.net/_UploadFile/Images/file/59454424138.pdfIn PDF document text
- http://medical-1669.com/userfiles/files/gesajikijirikulu.pdfIn PDF document text
- http://nj-rshb.com/v15/Upload/file/20219261716166674.pdfIn PDF document text
- http://vanillasky-ch.com/images/files/dovowu.pdfIn PDF document text
- http://contactfm.be/userfiles/files/dadobukapate.pdfIn PDF document text
- http://cameronhaddock.com/wp-content/plugins/formcraft/file-upload/server/content/files/16148b4066399a---sejezuvujalivumuzegofirof.pdfIn PDF document text
- https://zd-zeta.com/uploads/files/202109240210585433.pdfIn PDF document text
- http://terredellamagnagrecia.com/userfiles/files/59346066933.pdfIn PDF document text
- https://dpengineerindia.com/admin/userfiles/file/54023969105.pdfIn PDF document text
- http://kameleonhastanc.hu/files/file/mevufetobalodux.pdfIn PDF document text
- http://strelnicebudejovice.cz/userfiles/file/wibedisasogupagupifor.pdfIn PDF document text
- https://holycrosshealthcare.com/userfiles/files/buzumazogugaberozomusufal.pdfIn PDF document text
- https://renteci.com/imagens/file/mekotamavum.pdfIn PDF document text
- http://frankifoto.com/uploads/pages/files/lewebalemuri.pdfIn PDF document text
- https://takipcisec.com/calisma2/files/uploads/2724060476.pdfIn PDF document text
- https://ystechpro.com/nbloom/fckuploads/file/ladoxorekuxubimuzedu.pdfIn PDF document text
- http://iwayman.com/uploadfiles/file/2109061111372141271m7d2s.pdfIn PDF document text
- http://piazzademarini3ge.com/userfiles/files/89708633009.pdfIn PDF document text
- https://nceptionsolutions.com/wp-content/plugins/super-forms/uploads/php/files/03c4e31e702fe08e89ade85d44a6c2c2/mikidipusebudafelejad.pdfIn PDF document text
- http://tizianaiberti.it/userfiles/files/leleto.pdfIn PDF document text
- https://motodubai.com/uploaded_images/files/58283050172.pdfIn PDF document text
- https://icon-studios.com/userfiles/file/tuxoligiwur.pdfIn PDF document text
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/ngfLrbzwjls/uplcv?utm_term=convert+pdf+to+excel+vba+codePDF 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_off0000b639.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xB639 | 15776 bytes |
SHA-256: 3e0078eae2ed7f14a79176a0f5b0d6db8bef60647afd08443cb750904a7f5e95 |
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font_01_sfnt_off0000de1e.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDE1E | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_02_sfnt_off0000f635.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF635 | 10692 bytes |
SHA-256: bcfe077fc4c374d42509f536603b247b094697f69fdf24fcc5fe4d66b99c127a |
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