MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1204.002 Malicious Link
The PDF file was flagged by ClamAV as Pdf.Phishing.Trojan and a machine learning classifier indicated a high probability of maliciousness. The document contains numerous embedded URLs, many pointing to compromised CMS uploads or disposable hosting, suggesting a link farm designed to redirect users to malicious sites. The primary attack pattern involves tricking users into visiting these external links, likely for phishing or malware delivery.
Machine Learning
- Nyx PDF Classifier malicious score 0.9974
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://synerhu.ru/uplcv?utm_term=dof+app+for+android PDF link annotation
- https://www.gsccn.it/wp-content/plugins/formcraft/file-upload/server/content/files/1613f14614a46b---xasibalaguvajujag.pdfIn PDF document text
- http://openendrep.com/userfiles/files/kezotet.pdfIn PDF document text
- http://benetworkingpro.com/ckfinder/userfiles/files/62225200538.pdfIn PDF document text
- https://www.hkfew.org.hk/ckfinder/userfiles/files/keruvinolu.pdfIn PDF document text
- https://machnik.net/ckfinder/userfiles/files/jepum.pdfIn PDF document text
- https://giorgiosantinelli.it/file/30612813612.pdfIn PDF document text
- http://danangsculpture.com/uploads/image/files/tuzexi.pdfIn PDF document text
- https://carmelocuritiba.com.br/ckfinder/userfiles/files/14614168634.pdfIn PDF document text
- https://www.peltonfell.org.uk/ckfinder/userfiles/files/kiterixo.pdfIn PDF document text
- https://cfi-registration.amyhalter.com/buzzboxgift/img/userfiles/files/68341359580.pdfIn PDF document text
- http://gcsiva.com/files/userfiles/file/zaxipilenudiluvimurenod.pdfIn PDF document text
- http://prplus4u.com/ckupload/files/2167888333.pdfIn PDF document text
- http://stavo-bazar.cz/userfiles/file/bokiga.pdfIn PDF document text
- https://www.americanapi.com/wp-content/plugins/formcraft/file-upload/server/content/files/1614166ed84ae7---69619340024.pdfIn PDF document text
- http://vipavtoufa.ru/wp-content/plugins/super-forms/uploads/php/files/58d7f413a9e7ab7d4e85120057efdc7f/bamimuwejoziga.pdfIn PDF document text
- http://123dvere.sk/files/file/wudugosekelejuliwewujos.pdfIn PDF document text
- http://veoguidecostarica.com/ci/userfiles/files/99167725403.pdfIn PDF document text
- http://thehedgerowchronicles.com/ckfinder/userfiles/files/binadabepufif.pdfIn PDF document text
- https://altstudio.be/app/webroot/uploads/file/69497116538.pdfIn PDF document text
- https://fleuriste79.fr/ckfinder/userfiles/files/32178443149.pdfIn PDF document text
- http://execdentalclinic.com/uploads/ckfinder/userfiles/files/sokak.pdfIn PDF document text
- http://mygotour.com/FileData/ckfinder/files/20210906_4754C63758A3C005.pdfIn PDF document text
- http://h-st.nl/bestanden/files/80660536363.pdfIn PDF document text
- http://ty-int.com/files/files/fegezazivupalefalig.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_off0000d8ef.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD8EF | 10048 bytes |
SHA-256: 4b2afe94f545816242d44190d4927d0b13e107aa958a4b2c68ab26dfa57bc51c |
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font_01_sfnt_off0000ef3f.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xEF3F | 17988 bytes |
SHA-256: e481837acb98e6e2442f749919f2e7fe4240c836fce13cd25d9a2e22cda63ada |
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font_02_sfnt_off00011e33.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11E33 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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