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 CMS upload directories, suggesting a link farm designed to redirect users. The PDF's structure and embedded URLs are consistent with phishing or malware distribution lures.
Machine Learning
- Nyx PDF Classifier malicious score 0.9991
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://oniceh.ru/uplcv?utm_term=bsava+anesthesia+and+analgesia+pdf PDF link annotation
- https://aguiapromocional.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/16134f0c253cf3---97501921143.pdfIn PDF document text
- http://spalovnachemolak.sk/userfiles/file/putokiwoxuvomeduzisitem.pdfIn PDF document text
- https://adium.ru/userfiles/file/58572583766.pdfIn PDF document text
- https://sabunwangi.com/contents/files/bapavoji.pdfIn PDF document text
- https://studiogreenwich.ru/wp-content/plugins/super-forms/uploads/php/files/d999fc5aea8574dc5614566e2f249477/2482323809.pdfIn PDF document text
- http://doremimarlikinsaat.com/userfiles/file/viriwemafixatatewo.pdfIn PDF document text
- https://rosettes.it/userfiles/file/filiviluwapuwopij.pdfIn PDF document text
- http://taiwan-casters.com/userfiles/file/tuxotogapurajavabimux.pdfIn PDF document text
- http://wienbildarchiv.com/upload_files/files/7553233477.pdfIn PDF document text
- http://www.sandzthabapanel.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/16138719a04e56---gukidegebajogefuramureses.pdfIn PDF document text
- https://0800-707-808.com/upload/ckfinder_temp/files/20210905110829.pdfIn PDF document text
- http://1night2day.com/ckupload/files/bijiberepigomasavogib.pdfIn PDF document text
- https://cleartunemonitors.com/ckfinder/userfiles/files/xisuripalaralobebunos.pdfIn PDF document text
- https://strechybenesov.cz/content/nonudoxodurejunis.pdfIn PDF document text
- http://resheto.ru/users_images/fck/file/58953829810.pdfIn PDF document text
- https://www.passion-rnd.com/upfile/files/2021/09/03/76681248915.pdfIn PDF document text
- http://tischlerei-schlusche.de/sites/default/files/file/59573277186.pdfIn PDF document text
- https://muacash.com/webroot/img/files/9650501247.pdfIn PDF document text
- https://butzbacher.turnpoint.jo/app/webroot/upload/files/fafofurudoju.pdfIn PDF document text
- http://aranysolyomfeszke.hu/editor_up/xizole.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_off0000b5ed.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xB5ED | 18036 bytes |
SHA-256: c305bcf62fe0c80cfe3b283734b28c8af3e6c873ac7b18bb558dbf64d919ea70 |
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font_01_sfnt_off0000e54e.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE54E | 10676 bytes |
SHA-256: 01c6d94f39a4ca2442b8a48ad18d641f50b187e408c07c6644e35bc5cf91480e |
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font_02_sfnt_off0000fd88.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xFD88 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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