MALICIOUS
164
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF contains embedded JavaScript and multiple external URIs, some of which point to compromised CMS upload storage and disposable hosting, indicating a link farm designed to redirect users. The ML classifier and ClamAV detection strongly suggest malicious intent, likely for phishing or malware delivery via these external links.
Machine Learning
- Nyx PDF Classifier malicious score 0.9976
Heuristics 7
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ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTIONClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
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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://masan315.net/board/imagefile/file/77653885464.pdf In PDF document text
- http://systemsbiology.at/uploads/assets/file/30385241752.pdfIn PDF document text
- https://abofahed.com/userfiles/file/65067490706.pdfIn PDF document text
- http://magicdiscoradio.hu/userfiles/file/13705478127.pdfIn PDF document text
- http://nickels.design/ckfinder/userfiles/files/kamade.pdfIn PDF document text
- http://adria-ex.com/images/blog//file/fogomu.pdfIn PDF document text
- http://lexus-custom.com/js/upload/files/vadupevuzobipafeguvitetew.pdfIn PDF document text
- https://advantagelic.com/singhania/downloads/file/29713377460.pdfIn PDF document text
- http://yatros.ro/wp-content/plugins/formcraft/file-upload/server/content/files/1608764175ffce---sukowudez.pdfIn PDF document text
- http://belst.by/upload/file/9914624912.pdfIn PDF document text
- https://preprodpcb.com/userfiles/files/55964771706.pdfIn PDF document text
- https://108pizza.pl/uploads/userfiles/files/tivud.pdfIn PDF document text
- http://okmarin.ru/userfiles/file/fogudopedalewomanul.pdfIn PDF document text
- https://caror.hu/ckfinder/userfiles/files/tewamad.pdfIn PDF document text
- http://brlairport.com/images/file/tevotakoguzirezopobelos.pdfIn PDF document text
- http://bookblog.kr/data/file//files/wovikufefunafolaludaji.pdfIn PDF document text
- https://hpsoft.shop/upload/files/fovizodave.pdfIn PDF document text
- http://www.hz-kontejnery.cz/ckfinder/userfiles/files/ropirik.pdfIn PDF document text
- https://vuaship.com/wp-content/plugins/super-forms/uploads/php/files/i5ovgngh6rb8to8l77gathptfb/watutifajubedozuvirago.pdfIn PDF document text
- https://afra24.com/basefile/afra24/files/moxijanuriborokojep.pdfIn PDF document text
- http://gennarimaq.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/16094a050a5077---2196694407.pdfIn PDF document text
- http://fasson.vip/images/editor/files/tugiwopovepudizabin.pdfIn PDF document text
- http://agiusfuneraldirectors.com/files/file/11691445723.pdfIn PDF document text
- https://feedproxy.google.com/~r/Uplcv/~3/FevRqgeaUVY/uplcv?utm_term=free+adobe+pdf+markup+toolPDF 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_off0000f1a4.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF1A4 | 10604 bytes |
SHA-256: 49e86e8208471f6e5116fb3b0df3a37e518b7d9aa92d91dcd163c600baaf8b99 |
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font_01_sfnt_off0001099e.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1099E | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_02_sfnt_off000121b0.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x121B0 | 17760 bytes |
SHA-256: 612e04752bca8e2feb152511bf944c1d01e886bf849be500534dd6cb1164ac64 |
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