MALICIOUS
164
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains embedded JavaScript and a large number of external URIs, many of which point to compromised CMS upload storage or disposable hosting, suggesting it is used as a link farm to distribute phishing content or further malware. The embedded JavaScript likely facilitates the redirection to these malicious sites.
Machine Learning
- Nyx PDF Classifier malicious score 0.9986
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://krisoc.ru/uplcv?utm_term=obm+almanya+i%C5%9F%C3%A7i+al%C4%B1m%C4%B1+ba%C5%9Fvuru+formu
- http://jinistudy.com/_UploadFile/Images/file/vejesedalarurelonanexuda.pdf
- https://thietbiotoviet.com/Images_upload/files/75318209266.pdf
- http://gunjanjain.com/app/webroot/js/uploads/files/sevodewedivir.pdf
- https://ohligschlaeger-berger.de/wp-content/plugins/formcraft/file-upload/server/content/files/160f308eaa8668---fusukudus.pdf
- https://hmv.ir/wp-content/plugins/formcraft/file-upload/server/content/files/160bab2618bf32---panalamenif.pdf
- https://bluetact.com/locktactyuma/userfiles/file/radirubadomusum.pdf
- http://www.optionassurance.ca/wp-content/plugins/formcraft/file-upload/server/content/files/160a0a3e95ad33---60595418303.pdf
- http://fabrykakonwersji.pl/wp-content/plugins/super-forms/uploads/php/files/d34d0ecf2a3f92ffd856f99615b8116c/nokomos.pdf
- https://traveletrust.com/basefile/traveletrustcom/files/nuzoxeginitikokitolove.pdf
- http://cartonwrappingmachine.com/userfiles/file/bepamepalemetaxixizomabux.pdf
- http://minhledtran.com/luutru/files/buwufirabenumas.pdf
- http://premiumresourcing.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b9271a8136e---palitu.pdf
- https://frpeteradeyemi.com/userfiles/files/gemurufoforux.pdf
- http://www.everhouse.lt/wp-content/plugins/formcraft/file-upload/server/content/files/16095cee8c2d06---lugis.pdf
- http://abapaposentados.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/16076aba984244---25113061926.pdf
- https://apinero.com/wp-content/plugins/formcraft/file-upload/server/content/files/16076bbe5e6a3e---47062843234.pdf
- https://www.northernillumination.com/wp-content/plugins/super-forms/uploads/php/files/96135355b67385f8e9d42d99f3131fae/sogulujosikulas.pdf
- https://mexico-airport-transfers.com/ckfinder/userfiles/files/fapuvelokuxalojekeko.pdf
- https://thehideawayresortpattaya.com/userfiles/files/3897294114.pdf
- http://www.pirac.org/wp-content/plugins/super-forms/uploads/php/files/f8240d3f7644186711d7e7e1d02ff6d4/29703683694.pdf
- http://relocationservicesgroup.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606cc3e23cbb5---rizezasutosujisojelijum.pdf
- https://www.cocochan.com.pk/wp-content/plugins/super-forms/uploads/php/files/1fa863684fc36b7f34bd4b09381a9230/pizobaforamigoj.pdf
- https://wineuniverse.us/userfiles/file/25713052411.pdf
- https://eclipsetheaters.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606c85b8be164---80116174097.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_off0000ebf4.bine305127ac919426639a63a4aff583dfc9a2b0522d9f78d47b9819fb616addb52 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xEBF4 | 19836 bytes |
font_01_sfnt_off00011c9a.binf86dad92678139971660c60a7a5b0cbb59cb2837107f85921d9452205b53f6b4 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11C9A | 10908 bytes |
font_02_sfnt_off00013598.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x13598 | 16792 bytes |
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