MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The sample is identified as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains numerous external links, many pointing to compromised CMS uploads or disposable hosting, suggesting a link farm designed to redirect users. The presence of embedded URLs and the PDF structure strongly suggest it's used as a lure, likely for phishing or to download further malicious content, aligning with spearphishing attachment tactics.
Machine Learning
- Nyx PDF Classifier malicious score 0.9991
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://coretry.ru/uplcv?utm_term=vocal+function+exercises+speech+therapy+pdf PDF link annotation
- https://samsungdvmklima.com/upload/ckfinder/files/76839497364.pdfIn PDF document text
- http://altinay-law.com/images/file/wakufifelazuwefu.pdfIn PDF document text
- http://cascinamana.it/userfiles/file/617956409.pdfIn PDF document text
- http://www.farparts.cl/wp-content/plugins/formcraft/file-upload/server/content/files/1608d0b506d066---fefevudovedawevekewoza.pdfIn PDF document text
- http://szao-spb.ru/images/news/file/lufarunugol.pdfIn PDF document text
- http://bielle-srl.com/userfiles/files/daxudulosuvamijofozowuv.pdfIn PDF document text
- http://www.findvoters.com/userfiles/file/36953486348.pdfIn PDF document text
- http://artmetinc.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608253022a739---tozotiratizazataj.pdfIn PDF document text
- http://www.radiopopiatej.com/wp-content/plugins/formcraft/file-upload/server/content/files/160aec531cab42---32767463323.pdfIn PDF document text
- http://esipro.fr/userfiles/file/getozazajepoxazebimini.pdfIn PDF document text
- http://willtorock.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b0df6990bc9---zizenoriri.pdfIn PDF document text
- http://gallery4walls.com/upload/editer/file/84554953601.pdfIn PDF document text
- http://www.studiolegalefusimorelli.com/wp-content/plugins/formcraft/file-upload/server/content/files/160abd88b6e455---43161626645.pdfIn PDF document text
- http://hellnocancershow.com/wp-content/plugins/formcraft/file-upload/server/content/files/16071a43c15d6d---lubilipun.pdfIn PDF document text
- http://thienlongadv.com/upload/files/89264607876.pdfIn PDF document text
- http://www.next-conseil.fr/wp-content/plugins/formcraft/file-upload/server/content/files/160b80ba86e34c---togukaxotusazar.pdfIn PDF document text
- https://gretajensen.com/ckfinder/userfiles/files/89739302201.pdfIn PDF document text
- http://connect-senior.ch/uploades/userfiles/file/38179454131.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_off0000fa48.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xFA48 | 17908 bytes |
SHA-256: f4327d3325be13320bddcf4aac5d658e29098a4181947731366ec2dd5697baaa |
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font_01_sfnt_off000129ab.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x129AB | 11004 bytes |
SHA-256: df52b1a94afe0b33a0f4333b2e5271d11b780858b26545c5174f5c19babbfe53 |
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font_02_sfnt_off00014338.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x14338 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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