MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1204.001 Malicious Link
The file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. Heuristics identified it as a PDF link farm pointing to compromised WordPress uploads and disposable hosting, suggesting it's designed to redirect users to malicious sites. The embedded URLs, such as https://medvor.ru/uplcv?utm_term=reading+comprehension+passages+8th+grade+pdf, are likely part of a phishing or malware distribution scheme.
Machine Learning
- Nyx PDF Classifier malicious score 0.9951
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://medvor.ru/uplcv?utm_term=reading+comprehension+passages+8th+grade+pdf PDF link annotation
- https://lightspec.ca/wp-content/plugins/super-forms/uploads/php/files/d21ce2c807181b0fbaf617cd66c084a5/27626664173.pdfIn PDF document text
- http://xlsferrosilicon.com/d/files/pegajabuvinudefipowan.pdfIn PDF document text
- https://2greenchicks.com/wp-content/plugins/super-forms/uploads/php/files/73da1b67bc51f0257d04e6ae2cc5d0f7/59399706878.pdfIn PDF document text
- http://lumieretvie.com/userfiles/file/92571373374.pdfIn PDF document text
- http://chayka-svg.ru/files/55892305450.pdfIn PDF document text
- https://pass-eco-energies.com/ckfinder/userfiles/files/38455446637.pdfIn PDF document text
- http://35ju.21tg.cn/uploadfile/ckeditor/files/xijomojukuxepazenakoso.pdfIn PDF document text
- https://zzarosiscarampola.it/file/23508078541.pdfIn PDF document text
- https://shrmivirtual.org/wp-content/plugins/super-forms/uploads/php/files/82770373fbb0f6ebb2ffa6262688bf28/wijukizud.pdfIn PDF document text
- http://lapenya.cat/imgjovesnaves/file/30175124087.pdfIn PDF document text
- https://cincia.ro/ckfinder/userfiles/files/wakefagikimirozibo.pdfIn PDF document text
- https://iasvn.org/Images_upload/files/6536163830.pdfIn PDF document text
- http://kezheng.net/Upload/file/pilut.pdfIn PDF document text
- http://www.orarestauratorisaf.it/wp-content/plugins/formcraft/file-upload/server/content/files/16076f6300dadf---48058448566.pdfIn PDF document text
- http://bora.su/ckfinder/userfiles/files/jenidijim.pdfIn PDF document text
- https://hung168.tw/UserFiles/files/56311636636.pdfIn PDF document text
- http://skup-laptopow.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607c06a693370---xusoguxad.pdfIn PDF document text
- http://openendrep.com/userfiles/files/13673555837.pdfIn PDF document text
- http://pvsystreports.com/wp-content/plugins/super-forms/uploads/php/files/06e11d0u32j4f7mkt6q6p1rfn1/1653194545.pdfIn PDF document text
- http://dmkert.hu/files/file/72462171176.pdfIn PDF document text
- http://solarhomepage.ch/fckeditor/editor/images/file/zaregojekowexakipujekab.pdfIn PDF document text
- https://jamiatulbanat.in/wp-content/plugins/formcraft/file-upload/server/content/files/160bc2ad35ca91---15078200682.pdfIn PDF document text
- http://alliance-ltd.com/userfiles/30815916850.pdfIn PDF document text
- http://pytextiles.com/userfiles/file/sivuxul.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_off0000b272.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xB272 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_01_sfnt_off0000ca89.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xCA89 | 11272 bytes |
SHA-256: b0b4be0fda9106c7fe0051427a1127b0405efe7a69248f6ad51383a31f5d3c4e |
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font_02_sfnt_off0000e48c.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE48C | 14800 bytes |
SHA-256: 9149f33090b6a5bb8629a2076bd917185bd9667808abd567f1a2f5365103ec25 |
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