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 of which point to compromised CMS upload storage or disposable hosting, indicating a link farm designed to redirect users to malicious content. The ML classifier and ClamAV detection strongly suggest a phishing or trojan payload delivery. No scripts were extracted, but the structure and URL patterns are indicative of a malicious document.
Machine Learning
- Nyx PDF Classifier malicious score 0.9966
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=data+recovery+after+factory+reset PDF link annotation
- http://chinasoftcore.com/userfiles/file///saretuvemogir.pdfIn PDF document text
- http://dmn.ca/wp-content/plugins/formcraft/file-upload/server/content/files/16134268630758---kosamudedizoriwirolimure.pdfIn PDF document text
- https://astefin.ro/ckfinder/userfiles/files/56259626903.pdfIn PDF document text
- https://www.hdcorp.com.br/wp-content/plugins/super-forms/uploads/php/files/5cmjhs7omlgdkt0t2o363mccdf/42582714472.pdfIn PDF document text
- http://yishiweb.com/upfiles/files/20210904_124342.pdfIn PDF document text
- https://aprenda-atdi.com/uploads/files/66174711722.pdfIn PDF document text
- https://bozoklar.org/ckfinder/userfiles/files/futuvodumuxupolij.pdfIn PDF document text
- http://unsersohn.com/images/file/23082374250.pdfIn PDF document text
- http://digifast.cz/userfiles/laxonuporifetazibumirujo.pdfIn PDF document text
- http://e-restauracion.com/app/webroot/files/uploads/files/nowizotasumotutama.pdfIn PDF document text
- http://mclarenquartz.in/ci/userfiles/files/84097916474.pdfIn PDF document text
- http://martom24.pl/martom/userfiles/file/58959978967.pdfIn PDF document text
- https://sg-design.top/wp-content/plugins/super-forms/uploads/php/files/6c41a8afaf3375ae06cb06fd545dd449/17147176216.pdfIn PDF document text
- http://szamosiszerviz.hu/feltoltott/files/xawuzaboruwazopomo.pdfIn PDF document text
- http://erulingua.hu/uploads/content_files/files/wubej.pdfIn PDF document text
- http://ahxxzx.com/userfiles/202109/file/96736191464.pdfIn PDF document text
- http://nguyenthaotech.com/upload/files/11262156110.pdfIn PDF document text
- https://majubesar.com/contents/files/sopinabasizuxuxere.pdfIn PDF document text
- http://christopherspubandgrille.com/userfiles/files/wugale.pdfIn PDF document text
- http://mtt-association.fr/upload/file/77306381088.pdfIn PDF document text
- https://www.ferienhof-schneider.de/wp-content/plugins/formcraft/file-upload/server/content/files/161339730adca2---luzebepalotunogi.pdfIn PDF document text
- http://bualuang101.com/backoffice/upload/files/934156172.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_off0000b01e.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xB01E | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_01_sfnt_off0000c830.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xC830 | 14376 bytes |
SHA-256: 63b11af3cd4f36bdd8b78d573fb278d899a1612de50ea6ebec2807e604c6b41e |
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font_02_sfnt_off0000ebd1.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xEBD1 | 10268 bytes |
SHA-256: c0a72034099504fc10a10386f5213f2711c79aa982b12bc288b9246a4f7a082a |
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