MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains numerous embedded URLs, many of which point to compromised WordPress sites or disposable hosting, indicating a link farm designed to redirect users to malicious content. The presence of these links and the overall structure strongly suggest a phishing or malware distribution attempt.
Machine Learning
- Nyx PDF Classifier malicious score 0.9986
Heuristics 6
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ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTIONClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
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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=add+password+to+apps+android PDF link annotation
- http://th-hl.com///upload/files/70457106020.pdfIn PDF document text
- http://sushi-belovo.ru/files/45116174299.pdfIn PDF document text
- http://tecresconsolidamentorestauro.it/fck_data/file/wuneb.pdfIn PDF document text
- http://osullivanspressurewashing.com/wp-content/plugins/formcraft/file-upload/server/content/files/161435a6964648---vowidekekuzebemoveruzo.pdfIn PDF document text
- https://www.tessilgiada.it/wp-content/plugins/formcraft/file-upload/server/content/files/16138f6bdace35---2193243448.pdfIn PDF document text
- http://elturo.ru/img/upload/files/7472685811.pdfIn PDF document text
- https://yodishit.com/uploads/userfiles/file/29513241145.pdfIn PDF document text
- http://sanarina-coaching.de/ckfinder/userfiles/files/zinuzoxupikaf.pdfIn PDF document text
- http://e-hematologica.com/users/file/33692886195.pdfIn PDF document text
- http://jamalcar.com/userfiles/file/52074449417.pdfIn PDF document text
- http://lnyuanzong.com/uploads/files/20210908121034.pdfIn PDF document text
- http://czpohledavky.cz/userfiles/files/40092287494.pdfIn PDF document text
- https://www.spitalmoldovanoua.ro/ckfinder/userfiles/files/72305562273.pdfIn PDF document text
- http://opalbiosciences.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613e7192c62d3---xodojuv.pdfIn PDF document text
- https://sadhankendra.org/erc/media/zemobomel.pdfIn PDF document text
- http://thestarbusan.com/FileData/ckfinder/files/20210902_4EB1E1D352E0019A.pdfIn PDF document text
- http://studiotecnicobonoli.com/userfiles/files/ferolasor.pdfIn PDF document text
- http://www.shjkyq.com/up_files/FCK/file/jevixuk.pdfIn PDF document text
- http://machulski.com/public/file/diwogenepixetefatikeka.pdfIn PDF document text
- https://hosrem.org.vn/ckfinder/userfiles/files/vuvumabuw.pdfIn PDF document text
- https://tempegaring.com/contents/files/31987417608.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_off0000b728.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xB728 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_01_sfnt_off0000cf3a.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xCF3A | 16072 bytes |
SHA-256: 6f2931bc2bcad378fe05f1b045443b5fd57f6af86b3631cad8cb1b0cdf653439 |
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font_02_sfnt_off0000f883.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF883 | 10272 bytes |
SHA-256: 95baee50fe7f5fc487cde321e33dc296e9b3b41e9036722e393368cd76284193 |
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