MALICIOUS
164
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
The file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains embedded JavaScript and numerous external URIs, suggesting it is designed to redirect users to potentially harmful websites. The presence of PDF_SEO_DISPOSABLE_LINK_FARM and PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM heuristics further supports the attack pattern of using link farms on compromised or disposable hosting to distribute malicious content.
Machine Learning
- Nyx PDF Classifier malicious score 0.9956
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 https://allytemp.ru/uplcv?utm_term=how+do+you+find+the+vertex+of+a+parabola
- https://newsale.linyn.mobi/upload/ckeditor/pages/files/18429028867.pdf
- http://mcap.cz/images/uploadedimages/file/nemixikoza.pdf
- https://konferencii.ru/js/ckfinder/userfiles/files/dokezuvefojes.pdf
- http://mlead.net/images/e/file/59733375937.pdf
- https://egf.tw/test2/images/file/jumopajepikudatagafawe.pdf
- https://www.saenger-ohg.de/wp-content/plugins/formcraft/file-upload/server/content/files/1614238daa5f38---ronevese.pdf
- https://carcarnet.com/home/sandbox/domains/hkdance.tritek.hk/public_html/ckfinder/userfiles/files/55451262229.pdf
- http://makaifruits.com/wp-content/plugins/formcraft/file-upload/server/content/files/161443aa7552ea---17270428597.pdf
- http://gkz-crimea.ru/userfiles/file/zidajusobesoximululukovag.pdf
- https://kaktutzhit.by/uploads/files/jilupoxisuta.pdf
- https://bawauang.com/contents/files/fituvuboruvudalaj.pdf
- http://alliance-ic.ru/uploads/file/jufakolutusujotu.pdf
- http://slabowidzacy.smprzemysl.pl/ckfinder/userfiles/files/zuxenomofedolunab.pdf
- http://www.painters-restaurant.com/userfiles/file/18164827574.pdf
- http://dangkydoanhnghiep.org/hinhanh_fckeditor/file/12417026467.pdf
- http://www.cda.org.hk/ckfinder/userfiles/files/mukamu.pdf
- http://www.valathors.com/ckfinder/userfiles/files/19823224265.pdf
- https://toananhmedical.com/uploads/files/woromitosirukaferomokof.pdf
- http://valdhans.cz/userfiles/file/33973195718.pdf
- https://bimetoor.com/basefile/bimetoorir/files/nesofukogeferakawoxek.pdf
- https://www.scmsgroup.org/ckfinder/userfiles/files/topijiturisipedugaz.pdf
- https://aguiapromocional.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1614563c785718---25931443258.pdf
- http://www.darvidproperty.com/news/file/zekovozugupe.pdf
- http://www.w3.org/1999/02/22-rdf-syntax-ns#
- http://purl.org/dc/elements/1.1/
- http://ns.adobe.com/pdf/1.3/
- http://ns.adobe.com/xap/1.0/
- http://ns.adobe.com/xap/1.0/mm/
- http://ns.adobe.com/xap/1.0/rights/
- http://dejavu.sourceforge.net
- http://dejavu.sourceforge.net/wiki/index.php/License
Extracted artifacts 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000b4fa.bin550e77f990a676a7441dc5dd94cb28f2e0dccc7aa9292a3053f2896f09793e10 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xB4FA | 15984 bytes |
font_01_sfnt_off0000dd3d.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDD3D | 16792 bytes |
font_02_sfnt_off0000f554.binadae80b923a064138d46de34943aae2e2cef39a908f48ec22e18f0236cb14190 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF554 | 11024 bytes |
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