MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains numerous external URLs, many pointing to compromised WordPress sites or disposable hosting, suggesting a link farm used for phishing or distributing further payloads. The presence of PDF-specific heuristics like 'PDF_SEO_DISPOSABLE_LINK_FARM' and 'PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM' reinforces this assessment.
Machine Learning
- Nyx PDF Classifier malicious score 0.9956
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=ampliar+memoria+android PDF link annotation
- https://heart-calligraphy.com/uploads/files/202109031155182218.pdfIn PDF document text
- https://laptopserwis.com/app/webroot/media/files/gomefotipada.pdfIn PDF document text
- http://abw10thstreetne.com/uploads/files/58815203721.pdfIn PDF document text
- http://hotelrealerimini.it/userfiles/files/duwokibufelujunakifo.pdfIn PDF document text
- http://waxiangyuan.com/upload_fck/file/2021-9-13/20210913031045209208.pdfIn PDF document text
- http://sacoorhealth.pt/site/upload/file/razepajededigobuxe.pdfIn PDF document text
- http://medicare-darmstadt.de/bilder/UserImages/file/finudokudo.pdfIn PDF document text
- http://fotofolliasanlazzaro.it/userfiles/files/buleloj.pdfIn PDF document text
- http://spec-so.ru/sites/default/files/file/20054036039.pdfIn PDF document text
- http://www.brennholz-heinlein.de/wp-content/plugins/formcraft/file-upload/server/content/files/1613b46200c5ab---pujufabuzamiguxawolara.pdfIn PDF document text
- http://stylekd.ru/files/lejetudojekum.pdfIn PDF document text
- https://holzhaus-suedtirol.it/wp-content/plugins/formcraft/file-upload/server/content/files/161300da909cb0---vevofejojiwevuse.pdfIn PDF document text
- https://visualarchive.bg/files/15087950964.pdfIn PDF document text
- http://solartgaleria.hu/images/file/55483372329.pdfIn PDF document text
- http://firewaterdamagedfw.com/test/fckeditor/uploadfiles/file/luxevagefatemevagabaleg.pdfIn PDF document text
- http://sh8ke.com/wp-content/plugins/formcraft/file-upload/server/content/files/16137014d61660---10035938481.pdfIn PDF document text
- http://reanda.com/jingkelun/userfiles/files/20210908035747.pdfIn PDF document text
- http://csc-028.com/userfiles/file/20210902035538_l2cuod.pdfIn PDF document text
- http://vandientuchinhhang.com/upload/files/46399397599.pdfIn PDF document text
- http://111-orte.com/testarea/cwsCMSlight/media/files/koluwa.pdfIn PDF document text
- http://viviapalermo.com/userfiles/files/34887437825.pdfIn PDF document text
- https://ringid.vn/ckfinder/userfiles/files/55912802301.pdfIn PDF document text
- http://hawaiisushi.iorderfoods.com/uploads/files/64041081084.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_off0000de3a.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDE3A | 10268 bytes |
SHA-256: fd5c38daf40f69e439049746655f261880653e85272448206c16c611c02eb905 |
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font_01_sfnt_off0000f525.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF525 | 19188 bytes |
SHA-256: 6c7f3b5f8ece898a32d71d0878318983343a2cd53f474274d6d2e488aa2d74b1 |
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font_02_sfnt_off00012747.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x12747 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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