MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The file was detected as malicious by ML classifiers and ClamAV, indicating a phishing or trojan payload. It contains numerous external URIs and links to compromised CMS upload storage, suggesting it is part of a link farm designed to redirect users to malicious sites. No scripts were extracted, but the PDF structure and embedded URLs strongly indicate a phishing or malware distribution attempt.
Machine Learning
- Nyx PDF Classifier malicious score 0.9944
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://synerhu.ru/uplcv?utm_term=olive+tree+yellow+leaves
- https://cpsguffanti.com/uploads/file/91384829697.pdf
- http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ad77cb35f5c---balepapevasesebawijike.pdf
- http://vswet.ru/f/90617729519.pdf
- https://completecollegestrategies.com/wp-content/plugins/super-forms/uploads/php/files/0614a3e7beab532f2622e9abba68f3e7/boxobitaw.pdf
- http://www.tif.cn/wp-content/plugins/super-forms/uploads/php/files/p65ghths8qp93d6jgajnaip7i2/derotilotuxezuredabolove.pdf
- http://www.meglobalinc.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/160b51c8cdf281---75197826894.pdf
- http://oumkua.com/userfiles/file/zuzujesekivo.pdf
- http://jadever.vn/Images_upload/files/73390242986.pdf
- https://tavcam.com/upload/ckfinder/files/zesutowazezuwidap.pdf
- http://aep-tc.com/cache/fck_files/file/4913513615.pdf
- https://reifenscho.de/wp-content/plugins/formcraft/file-upload/server/content/files/161026e9bc4bcf---jafasa.pdf
- http://arcdesantmarti.com/biocop/Images/images-editor/file/48258219077.pdf
- http://talk200.com/admin/admin/uploadfiles/file/xabokozifi.pdf
- https://www.mybizwebsites.com/wp-content/plugins/formcraft/file-upload/server/content/files/160aa051a99592---famopopuwemekiniwujul.pdf
- https://sg-design.top/wp-content/plugins/super-forms/uploads/php/files/7aaf446d178680669a73e6fb696c4035/85125329409.pdf
- http://wxhsbl.com/ckfinder/userfiles/files/20210825_041451.pdf
- https://jamiatulbanat.in/wp-content/plugins/formcraft/file-upload/server/content/files/160869d480cf45---92404484992.pdf
- https://ventana-sur.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d3c7fd5f957.pdf
- http://pizzeriadevita.it/userfiles/files/85144046698.pdf
- https://12tiga.com/contents//files/19304593190.pdf
- https://brusroom.com/wp-content/plugins/super-forms/uploads/php/files/f98ba176c0e848399ea41b6d7d5ecaea/titegera.pdf
- https://thewaves.net/wp-content/plugins/super-forms/uploads/php/files/kr3oqga1mgjab9ch7nnjlhc566/84951155657.pdf
- http://www.iqubz.com/wp-content/plugins/formcraft/file-upload/server/content/files/16119cf2a60e75---felisexabu.pdf
- http://sungsam.net/userData/board/file/sunetugetabolimik.pdf
- http://bright-mineral.com/uploadfile/file/2021062411050778.pdf
- https://www.prowallpanama.com/wp-content/plugins/super-forms/uploads/php/files/ecf70535544edd8cc750aa0904178349/43608284048.pdf
- http://www.w3.org/1999/02/22-rdf-syntax-ns#
- http://purl.org/dc/elements/1.1/
- http://ns.adobe.com/pdf/1.3/
- http://ns.adobe.com/xap/1.0/
- http://ns.adobe.com/xap/1.0/mm/
- http://ns.adobe.com/xap/1.0/rights/
- http://dejavu.sourceforge.net
- http://dejavu.sourceforge.net/wiki/index.php/License
Extracted artifacts 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000d82f.bin98a306e72d86e557cba34c406492e5801755f86a5b4476db18378b6dbdbc6efa |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD82F | 17384 bytes |
font_01_sfnt_off00010583.binb328475e58eec6b22f1940fbdb12ef52a465a2dda5c667e8c43bf45ff731b29a |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10583 | 10288 bytes |
font_02_sfnt_off00011cf1.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11CF1 | 16792 bytes |
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