MALICIOUS
164
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The sample is a PDF containing embedded JavaScript, which is a common technique for delivering malicious content. The PDF also contains numerous external links, many pointing to compromised websites or disposable hosting, suggesting a link farm designed to redirect users to malicious sites. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware distribution.
Machine Learning
- Nyx PDF Classifier malicious score 0.9912
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://davidhammerstein.org/ckfinder/userfiles/files/9822798847.pdf In PDF document text
- https://fiambreszav.com/wp-content/plugins/super-forms/uploads/php/files/5be85c13b5075f2d0c5d4727f6b184d0/43804765685.pdfIn PDF document text
- http://www.fliesen-brill.de/wp-content/plugins/formcraft/file-upload/server/content/files/16080642daa9f3---wovexasajovavogu.pdfIn PDF document text
- http://factory-01.com/js/upload/files/26470746441.pdfIn PDF document text
- https://papiratisk.cz/soubory/94574405071.pdfIn PDF document text
- https://www.grecosalesinternational.com/wp-content/plugins/formcraft/file-upload/server/content/files/16126e9dfd9981---40374493466.pdfIn PDF document text
- https://www.asahinafunnels.com/wp-content/plugins/super-forms/uploads/php/files/teuvjr35vabrsjtg4nbnlrgrve/17068861815.pdfIn PDF document text
- https://www.geosuiteonline.de/wp-content/plugins/formcraft/file-upload/server/content/files/160d5b2f9d64c1---piwuxofonutole.pdfIn PDF document text
- https://avonsteel.com/UserFiles/file/97527176470.pdfIn PDF document text
- http://robbes.nl/media/files/madodef.pdfIn PDF document text
- https://octvads.site/js/ckfinder/userfiles/files/mopabozulebutukokixuw.pdfIn PDF document text
- https://bdata.vn/upload/files/79828761815.pdfIn PDF document text
- https://birudongker.com/contents/files/48762029998.pdfIn PDF document text
- http://kaies.cn/upfiles/210525032923291537w1xfic.pdfIn PDF document text
- https://www.chauffeur-prive-nice.fr/wp-content/plugins/formcraft/file-upload/server/content/files/16077b1cdda7f4---dekelorodovelamajerexed.pdfIn PDF document text
- http://novaserv.com/wp-content/plugins/formcraft/file-upload/server/content/files/160de35a0a2ba5---binakufovemovolifo.pdfIn PDF document text
- http://smeeing.com/userfiles/files/86776274779.pdfIn PDF document text
- http://www.ddd-iasi.ro/wp-content/plugins/formcraft/file-upload/server/content/files/1607bd2b8417f0---dokerewax.pdfIn PDF document text
- https://tecnibat.net/uploads/archivos/18803848308.pdfIn PDF document text
- https://weddingitaly.jp/images/file/21631104113.pdfIn PDF document text
- https://www.reliancecareuk.com/wp-content/plugins/super-forms/uploads/php/files/f4af16a585f03df03771cf12461c354f/givafuvukopu.pdfIn PDF document text
- https://sayurmateng.com/contents//files/sozim.pdfIn PDF document text
- http://gwardiajuvenia.pl/zdjecia/fck/file/wosizemiwo.pdfIn PDF document text
- https://werbemittelag.ch/upload/file/20187271037.pdfIn PDF document text
- http://www.rebranded.tv/wp-content/plugins/formcraft/file-upload/server/content/files/1608fb10d9b248---7267973153.pdfIn PDF document text
- http://dspec-car.com/js/upload/files/85589735941.pdfIn PDF document text
- https://feedproxy.google.com/~r/Uplcv/~3/Om9ozkHLxGw/uplcv?utm_term=iso+14001+version+2004+standard+pdfPDF 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_off0000e780.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE780 | 17816 bytes |
SHA-256: c9ae8d598da2fb1fc3e512ab5b17726e695643ffa1a466370af8148cc24d1490 |
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font_01_sfnt_off00011566.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11566 | 10832 bytes |
SHA-256: 98f099571838b663b83f35aa4fe835614cb090ff5e9a2e6f0fb701fd43c0fe9e |
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font_02_sfnt_off00012ea4.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x12EA4 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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