MALICIOUS
164
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF file contains embedded JavaScript, which is a common technique for executing malicious code. Additionally, it features a large number of external links, many of which point to disposable hosting or compromised CMS upload directories, suggesting a link farm designed to redirect users to malicious sites. The ML classifier and ClamAV detection strongly indicate malicious intent.
Machine Learning
- Nyx PDF Classifier malicious score 0.9976
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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Embedded JS stream low PDF_JSPDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
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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://uniquehotelsolutions.com/files/others/lerowu.pdf In PDF document text
- http://studioguagnoni.it/userfiles/files/soninojij.pdfIn PDF document text
- https://artsketch.ru/wp-content/plugins/super-forms/uploads/php/files/e02fab0793524d268a79912d2cf800c1/27939235026.pdfIn PDF document text
- http://volkshilfe-vlbg.at/images/content/files/11841573322.pdfIn PDF document text
- http://ncteonline.com/userfiles/file/sikasokerolajuzu.pdfIn PDF document text
- http://nuyewpilot.academy/wp-content/plugins/super-forms/uploads/php/files/0ecd4a3367bb8a28f8b5278f95b8ce1a/3520931881.pdfIn PDF document text
- http://tydafa.com/dafa/uploadfiles/20210905125647.pdfIn PDF document text
- https://tndvn.com/js/ckfinder/userfiles/files/82421386583.pdfIn PDF document text
- http://gpkoaee.ru/ckfinder/userfiles/files/xawiberijibexewukemopuwiv.pdfIn PDF document text
- https://cuatudongsaigon.vn/uploads/files/62688500282.pdfIn PDF document text
- https://izharfoster.com/wp-content/plugins/formcraft/file-upload/server/content/files/16138491070f4c---23535330855.pdfIn PDF document text
- https://livredart.com/ckfinder/userfiles/files/22721926160.pdfIn PDF document text
- https://masterjobintl.com/ckfinder/userfiles/files/rinotezexajinumimedikumif.pdfIn PDF document text
- http://makrostal.pl/user_images/file/34921619526.pdfIn PDF document text
- http://tieulongcopro.com/luutru/files/faravefaripuw.pdfIn PDF document text
- http://furnitura-syndicat.ru/ckeditor/ckfinder/core/connector/php/uploads/files/42086598615.pdfIn PDF document text
- http://doks-films.com/pcms/content/file/86994598650.pdfIn PDF document text
- http://cappellastudio.it/userfiles/files/88212927675.pdfIn PDF document text
- https://wacee.net/wp-content/plugins/formcraft/file-upload/server/content/files/16133453931e98---jekenodiwe.pdfIn PDF document text
- https://www.spoton.pet/wp-content/plugins/super-forms/uploads/php/files/1j12uti0647bjhdfcohp7iv83p/85717240858.pdfIn PDF document text
- http://files.ibiza-ferien.de/file/nefobizefitosi.pdfIn PDF document text
- http://ankaraeksioglu.com/resimler/files/50040921157.pdfIn PDF document text
- http://agecarekorea.com/ckupload/files/binogilikarodifuneg.pdfIn PDF document text
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/FevRqgeaUVY/uplcv?utm_term=how+prokaryotic+cell+is+different+from+eukaryotic+cellPDF link annotation
- 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_off0000bd39.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xBD39 | 11164 bytes |
SHA-256: 8c7bcc275524f2512c34841c7e370a1539c7c2b6851a4909416aa912cbc9ae37 |
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font_01_sfnt_off0000d75d.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD75D | 16236 bytes |
SHA-256: 8ed08b9476266df746e12d18e761cdbd14c80e4708b343af63b13d2ef606e4c7 |
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font_02_sfnt_off0001008a.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1008A | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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