MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1204.002 Malicious Link
The PDF contains numerous links pointing to various websites, many of which appear to be compromised CMS upload directories. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' indicates a pattern of using disposable hosting for these links. The ML classifier and ClamAV detection strongly suggest malicious intent, likely phishing or malware distribution via these links.
Machine Learning
- Nyx PDF Classifier malicious score 0.9982
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 http://dongtienlamnghiep.com/upload/file/40217325322.pdf
- http://goodtraefarm.com/ckupload/files/kazumenizizinipase.pdf
- http://synagoge-stommeln.de/ckfinder/userfiles/files/fibipoxemobafuse.pdf
- https://allianceflooring.net/wp-content/plugins/super-forms/uploads/php/files/bfb2b47eca932e6fec40f5579a935443/83668790906.pdf
- http://systemsbiology.at/uploads/assets/file/33199870502.pdf
- https://dobski.pl/userfiles/file/18180118201.pdf
- http://daehwa.info/uploaded/file/50158063207.pdf
- http://www.trimbleexpress.sk/wp-content/plugins/formcraft/file-upload/server/content/files/160984bef399b5---71488580834.pdf
- http://geology.ie/wp-content/plugins/formcraft/file-upload/server/content/files/160b3581820b99---napatarozefibosirozurosa.pdf
- http://asqcert.net/files/files/renuverotedenukelabig.pdf
- https://pluckywize.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c5bbcd63e71---ziponita.pdf
- https://bokseinstituttet.dk/wp-content/plugins/formcraft/file-upload/server/content/files/1609727885cc4c---wusilewawaxomuda.pdf
- http://bukharaalpharetta.com/sites/default/files/file/95795085088.pdf
- https://bakwanudang.com/contents//files/97879120900.pdf
- http://wjvanderheidedienstverlening.nl/uploads/file/85115581691.pdf
- https://funbugs.ie/userfiles/file/73092916842.pdf
- http://quincy.pl/ckfinder/userfiles/files/32043243566.pdf
- http://europeanprofservices.com/wp-content/plugins/formcraft/file-upload/server/content/files/16099b44a4fd08---90646739176.pdf
- https://www.coconutlodge.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608157ad388b2---tatelazilapove.pdf
- http://glassick.com/userfiles/file/ziwasavapuluvex.pdf
- https://cafesca.org/ckfinder/userfiles/files/wimokifewajonukubus.pdf
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/LPIa9PGmDLg/uplcv?utm_term=assignment+examples+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_off0000f519.bin65c6b6e28e25f4a2814749d8c75e903a92b018028724da366d4b0e6f634ecb13 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF519 | 17896 bytes |
font_01_sfnt_off0001235c.bin3287161b3daf222192c5dd921d2df19a58c19b403c7a1737420bccae0efecb98 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1235C | 10704 bytes |
font_02_sfnt_off00013bbd.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x13BBD | 16792 bytes |
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