MALICIOUS
164
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
This PDF file was flagged by multiple heuristics as malicious, including a high-confidence ML classifier and ClamAV detection. It contains embedded JavaScript and a large number of external URIs, many of which point to compromised WordPress sites or are part of a link farm on disposable hosting. The embedded JavaScript likely serves to exploit vulnerabilities or redirect the user to malicious sites, contributing to a phishing or malware distribution attack.
Machine Learning
- Nyx PDF Classifier malicious score 0.9951
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 https://medvor.ru/uplcv?utm_term=can+t+open+pdf+on+android+phone PDF link annotation
- https://iwistw.com/upload/files/81391062051.pdfIn PDF document text
- https://www.assofmt.org/ckfinder/userfiles/files/zafakijolelax.pdfIn PDF document text
- http://zatoodesign.com/userfiles/files/xaluvara.pdfIn PDF document text
- https://investmentskillsgroup.com/images/userfiles/file/92929206633.pdfIn PDF document text
- https://royal-art.pl/uploads/userfiles/files/84824801106.pdfIn PDF document text
- http://sistersaviopublicschool.com/userfiles/file/72146071754.pdfIn PDF document text
- https://monarchwinemerchants.com/wp-content/plugins/super-forms/uploads/php/files/a5d0f59db758e8256d5f92012d32d80c/82446892313.pdfIn PDF document text
- http://artsar.pl/userfiles/file/43281579654.pdfIn PDF document text
- http://ipayon.com/root/FCKeditor/file/nutegax.pdfIn PDF document text
- https://icicle-mountaineering.ltd.uk/ckfinder/userfiles/files/14450561928.pdfIn PDF document text
- http://palakkadtourism.in/ckfinder/userfiles/files/13256432298.pdfIn PDF document text
- https://advicezone.org.uk/wp-content/plugins/super-forms/uploads/php/files/8go7i125ufstnl2ggq1s4k6ho4/38685236083.pdfIn PDF document text
- https://charteriraq.ir/basefile/charteriraqir/files/jeroziz.pdfIn PDF document text
- https://assisdrive.pt/userfiles/file/11577990374.pdfIn PDF document text
- http://ilink.pl/userfiles/file/57611167252.pdfIn PDF document text
- http://decorstore.eu/upload/file/tumopowonozokamoleruvozi.pdfIn PDF document text
- https://moraure.net/js/ckfinder/userfiles/files/6625175139.pdfIn PDF document text
- http://www.inhd.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/161351cc91c162---venenata.pdfIn PDF document text
- http://tokyoto.pl/UserFiles/file/41653477483.pdfIn PDF document text
- https://ciiinnovationsummit.com/ci/userfiles/files/20136044534.pdfIn PDF document text
- https://ofertaromania.ro/ckfinder/userfiles/files/zovizigozoromijikifofi.pdfIn PDF document text
- http://aadcnfgl.netsociality.com/upload/files/30206111339.pdfIn PDF document text
- https://wyslijpaczki.pl/app/webroot/files/userfiles/file/zuzujitetebusofimejek.pdfIn PDF document text
- http://www.taylormadetc.com/siteadmin/ckfinder/userfiles/files/nemis.pdfIn PDF document text
- http://www.orarestauratorisaf.it/wp-content/plugins/formcraft/file-upload/server/content/files/1614996bc34c43---92408552397.pdfIn 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://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_off0000b041.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xB041 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_01_sfnt_off0000c858.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xC858 | 10412 bytes |
SHA-256: 0ff112ded9435a214939948b99c5ff242d300927227fac4b3a9606dff79dc67c |
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font_02_sfnt_off0000dfda.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDFDA | 14368 bytes |
SHA-256: d37ef9586b8bb18eedbc8902cf87ed2c4a46f5ff3492b5a95afc822ce8919030 |
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