MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains numerous links pointing to compromised CMS upload directories and disposable hosting, suggesting a link farm designed to redirect users. The PDF's structure and the presence of external URIs strongly indicate it's used as a lure to lead victims to potentially malicious sites.
Machine Learning
- Nyx PDF Classifier malicious score 0.9929
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=severe+anger+issues
- https://nowackleverkusen.de/wp-content/plugins/formcraft/file-upload/server/content/files/16077f19bd3974---botikifib.pdf
- http://aleeblog.com/wp-content/plugins/super-forms/uploads/php/files/rkmgdbq7uismcqoadsq0dnjns6/volevigurofijidolajof.pdf
- http://warraichmeats.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607bc21d2c138---vawasixalipiwowonaxa.pdf
- http://menafundinfo.com/userfiles/file/77583492657.pdf
- https://minipowerpack.net/upload/files/nuxite.pdf
- https://cedarcreeksauce.com/wp-content/plugins/super-forms/uploads/php/files/27a74ac89de6f253c3695b39f0f52773/xegegokavirumobidov.pdf
- https://microfocus-realize2020mea.com/wp-content/plugins/super-forms/uploads/php/files/039e4fb41f69e7acd36cfd6e288d8d78/bulowitepudojokus.pdf
- https://robinio.de/wp-content/plugins/super-forms/uploads/php/files/djs57gsb5idkec8rpkvqs3pscn/64333216392.pdf
- http://lbhs1965.com/clients/6/6b/6bdd8f708684a1f547efbf97e1630fe5/File/zupuki.pdf
- http://atut-biuro.com/uploaded/file/vozobowuxitojumadotiwo.pdf
- https://plasy.com/uploads/file/sijefebopotemozeka.pdf
- http://www.hcibatiment.fr/wp-content/plugins/formcraft/file-upload/server/content/files/1609b3800238c1---gokuxoletem.pdf
- https://xuantruongtech.com/images/ckeditor/files/97045827977.pdf
- http://sakirnoopo.ru/wp-content/plugins/super-forms/uploads/php/files/e073f6032287332c48cd74564012fbf2/rugonofujaloraj.pdf
- http://fsgpj.com/upfolder/e/files/20210628191650.pdf
- https://iamluno.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607a854503d3f---38755544935.pdf
- https://controlcert.se/wp-content/plugins/formcraft/file-upload/server/content/files/160c5d8402fd89---73333367683.pdf
- https://archltginc.com/wp-content/plugins/super-forms/uploads/php/files/bc67459be3dc10427670da5194f4f62c/19265988578.pdf
- http://ucity68.com/clients/e/ea/ea220da86df44fb0ae3b7c8e8295ccc1/File/tuluwavaremajekonas.pdf
- https://allianceflooring.net/wp-content/plugins/super-forms/uploads/php/files/a251de6ba2afd945707d8b28a6544388/96467875061.pdf
- https://hssipm.com/wp-content/plugins/super-forms/uploads/php/files/931d1d4a7160e66bfd0ef26a5d367840/57276094618.pdf
- https://www.gs-gleichmann.de/wp-content/plugins/formcraft/file-upload/server/content/files/160946712b3517---1398269979.pdf
- http://asesorialuishervas.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bee018394c3---31166834192.pdf
- http://www.caribbeandentist.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bd3484348d1---zugew.pdf
- http://www.viksexteriors.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c79d38e877d---5200827442.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_off00010bc3.bin62da8c70da2c9d857c7d479355a8954f43e347cef7f659e97a617fa67bb9c8ab |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10BC3 | 19732 bytes |
font_01_sfnt_off00013f21.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x13F21 | 16792 bytes |
font_02_sfnt_off00015738.bin4c467e2a4b0c4b7c52bd2dad554a2b747b670e67159c40e549f1637daf64f630 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x15738 | 10260 bytes |
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