MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1204.002 Malicious File
This PDF file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. The file functions as a link farm, with numerous embedded URLs pointing to compromised WordPress sites. These sites, in turn, host further PDF files, suggesting a multi-stage redirection or phishing scheme. The presence of external URIs and link farms on compromised CMS uploads points towards an attempt to obscure the ultimate malicious destination.
Machine Learning
- Nyx PDF Classifier malicious score 0.9970
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://crewmak.ru/uplcv?utm_term=used+detach+lowboy+trailers+for+sale
- https://pilotcenter.gr/wp-content/plugins/super-forms/uploads/php/files/t4v1jjp4tp6a85ucteo424c3lk/suzezugefavufaliwovalabi.pdf
- http://minuspk.ru/minuspk.ru/userfiles/file/62381707199.pdf
- https://hobbes-group.com/upload/files/1898406264.pdf
- https://arizonalightingsales.com/wp-content/plugins/super-forms/uploads/php/files/5b1b63ceec31d4464d54347b3ef2877e/73732202636.pdf
- http://www.nbrownies.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/16071c980410bd---nerinijom.pdf
- https://saraelv.no/wp-content/plugins/formcraft/file-upload/server/content/files/16098362ad0e4e---73936996498.pdf
- http://www.driftime.ee/wp-content/plugins/formcraft/file-upload/server/content/files/160ab343b12591---jadetuk.pdf
- https://advance-pack.com/editor_upload/file/wunolofutak.pdf
- https://sk-developers.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a972141b3d3---86362092651.pdf
- http://amon-syotengai.com/userfiles/file/wekagovesexoxenerulaza.pdf
- http://studiotecnicoarduini.eu/userfiles/files/95021809531.pdf
- http://allseasonsart.com/uploads/fck_uploads/file/65387486737.pdf
- http://oreade-breche.fr/userfiles/file/11779593444.pdf
- http://beergolfers.com./blog/images/file/42324454364.pdf
- https://notofthisgalaxy.com/wp-content/plugins/super-forms/uploads/php/files/gnl9f3m2u78t97huj0p0tt45cf/35164208008.pdf
- https://infravoip.com/wp-content/plugins/super-forms/uploads/php/files/d23ab8f6614a194b657dbf9d7a670e8a/33594711388.pdf
- https://www.qbuildsoftware.com/wp-content/plugins/super-forms/uploads/php/files/4ec5f261a49941347dd3ee6c0fb847aa/12366590231.pdf
- https://dallaslandscapedesign.com/media/files/memabezajuvitakevulu.pdf
- https://www.heainc.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607dd49b7fc55---lugetusix.pdf
- https://youstore21.com/wp-content/plugins/super-forms/uploads/php/files/5ad954a4ef077eb13920f6a8fd3b0bce/81908981687.pdf
- https://sipsib.ru/wp-content/plugins/super-forms/uploads/php/files/8ae014525c38315da966ad3c89144977/28627779974.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_off0000ec35.bin797ac3144fc56eb53fa281638805fcac5f81e46622e8b0f62d5b6a7f7bfaf198 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xEC35 | 10816 bytes |
font_01_sfnt_off0001055a.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1055A | 16792 bytes |
font_02_sfnt_off00011d6c.binbdcf591d2b38b34e40c154b0a5e42c5cdbfbbfe218bd0510f50b1ae5ecb85549 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11D6C | 18004 bytes |
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