MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
This PDF was flagged by multiple heuristics and a machine learning classifier as malicious, with ClamAV identifying it as a phishing trojan. It contains numerous external links, many pointing to potentially compromised WordPress sites or disposable hosting, suggesting a link farm designed to redirect users to malicious content. The presence of embedded URLs and the nature of the heuristics indicate a phishing or malware distribution attempt, likely initiated via spearphishing.
Machine Learning
- Nyx PDF Classifier malicious score 0.9975
Heuristics 6
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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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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=english+idioms+in+use+advanced+book+with+answers+pdf
- http://frutapacargentina.com/ckfinder/userfiles/files/29117594469.pdf
- https://funbugs.ie/files/file/49731621903.pdf
- https://k85shj16h-561lt.com/contents/files/7679094433.pdf
- http://generaltubi.com/container/ckfiles/files/84460912562.pdf
- https://pensiuneavalentina.ro/app/webroot/file/keduvada.pdf
- http://cosyromania.com/media/file/83307717899.pdf
- http://heimundsicherheit.de/userfiles/file/53182534373.pdf
- http://irina-beha.com/ckfinder/userfiles/files/xafin.pdf
- https://mkserwis.pl/userfiles/file/sogikubujagerefo.pdf
- http://cartonwrappingmachine.com/userfiles/file/56366445562.pdf
- http://nanouklid.cz/upload/file/1914486236.pdf
- http://squarcialupirelaxinchianti.com/writable/public/userfiles/file/84905843606.pdf
- http://tt-ural.su/admin/ckfinder/userfiles/files/vamugunisuzimivuvodaraxi.pdf
- http://goldenteriyaki.com/uploads/files/maraxarizagizisesoxikokes.pdf
- http://greenglobepms.com/uploads/27935222398.pdf
- http://www.kocay.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/1613edf96805af---boxawomevurem.pdf
- http://bordahusfeldolgozo.hu/editor_up/xigibupumizakosodi.pdf
- https://smilaxlabs.com/userfiles/files/xavilibifenepemem.pdf
- https://www.northamericatalk.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613dc3627adaa---42128006479.pdf
- http://vhktn.at/images/content/files/5341544228.pdf
- https://beyondpins.com/calisma2/files/uploads/kegaridilazulenoma.pdf
- https://www.beewellrx.com/wp-content/plugins/super-forms/uploads/php/files/1ar2edt90djmgjgug9fceci2o2her5tp/34514115646.pdf
- https://galedo.cz/www/data/cms_files/files/49911243124.pdf
- https://www.kiteschule-eckernfoerde.de/wp-content/plugins/formcraft/file-upload/server/content/files/16145a80ba39a0---wiginiwijiloluli.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_off0000b329.bin8684cd3e42d19a6b6da97441081f33298312d5a41f4cda76349a6a8a0b16964d |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xB329 | 11536 bytes |
font_01_sfnt_off0000cdeb.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xCDEB | 16792 bytes |
font_02_sfnt_off0000e5fd.bin68ac3f98b27f515f386b32fa2b0beca4f97ae10ce9e64b104f6de9df320893e5 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE5FD | 15692 bytes |
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