MALICIOUS
164
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The file is identified as malicious by ML classifiers and ClamAV, indicating a phishing or trojan payload. Numerous embedded URLs point to compromised CMS uploads and link farms, suggesting an attempt to distribute further malicious content or phish for credentials. The presence of a 'download button' heuristic reinforces the lure-based attack pattern.
Machine Learning
- Nyx PDF Classifier malicious score 0.9998
Heuristics 7
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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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Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTONDocument contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
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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=exercise+irregular+verbs+pdf PDF link annotation
- https://kes-stv.ru/wp-content/plugins/super-forms/uploads/php/files/6ea23822f9ef793acb83fb122b1cd0d1/95629020671.pdfIn PDF document text
- https://harrisitalia.it/uploads/file/lufosokodopekogij.pdfIn PDF document text
- https://bem-sa.com/img/file/nixom.pdfIn PDF document text
- http://caribsplash.org/wp-content/plugins/formcraft/file-upload/server/content/files/16081d915b171d---lurugog.pdfIn PDF document text
- https://autoschiller.de/wp-content/plugins/formcraft/file-upload/server/content/files/16093fc9f7ab86---kuvebigigonen.pdfIn PDF document text
- http://aodaibooking.com/FileData/ckfinder/files/20210605_CD5286048FBAA12B.pdfIn PDF document text
- https://xn--arbeitskndigungsrecht-best-5zc.de/userfiles/file/tajodex.pdfIn PDF document text
- https://zapcdn.space/web/img/podborky/files/9570881688.pdfIn PDF document text
- http://bephoangdung.vn/uploads/ckfinder/files/fajulaxafav.pdfIn PDF document text
- https://artsketch.ru/wp-content/plugins/super-forms/uploads/php/files/b85819cea45b8a1a60148fd1ba18087c/76747154463.pdfIn PDF document text
- https://valserve.in/web/k/main_admin/ckfinder/userfiles/files/fikolebugunosibezaw.pdfIn PDF document text
- https://admonks.ru/wp-content/plugins/super-forms/uploads/php/files/0440091cdfe394642511d41f2433aa29/kuwoguri.pdfIn PDF document text
- https://www.tifdip.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608396c707a30---fipute.pdfIn PDF document text
- http://reiki-roots.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/16073399b2cac5---66113451453.pdfIn PDF document text
- https://bizdrive.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1/16074f90edcb9e---pofikilawuralu.pdfIn PDF document text
- https://samiznojmo.cz/wp-content/plugins/super-forms/uploads/php/files/dfdd69e7372f30807dba2bcdb37a4b93/98879795141.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn 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://scripts.sil.org/OFLIn PDF document text
Extracted artifacts 2
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000bcbf.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xBCBF | 5548 bytes |
SHA-256: 47e984a3837d6710cb4b479bfdf37adf8f3fdcf1daa5036683600f178bc047f8 |
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font_01_sfnt_off0000cfb9.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xCFB9 | 10260 bytes |
SHA-256: 3b9deab4e584f184db4c6ad9093e5a48e41e227ac7a7463eb0a81b960531be1e |
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