MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains numerous links pointing to compromised websites, suggesting it functions as a link farm to distribute phishing content or further malware. The presence of external URIs and link farms on potentially disposable hosting supports this assessment.
Machine Learning
- Nyx PDF Classifier malicious score 0.9947
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://krisoc.ru/uplcv?utm_term=my+ding+a+ling+song
- http://vetranhtuong.info/luutru/files/91367302258.pdf
- http://gemculture.com/userfiles/file/gamoxolilajenakoziwazutuk.pdf
- https://www.cr-sdc.org/wp-content/plugins/super-forms/uploads/php/files/f3532ecf318e1fd595ac99974a9a0f0b/memijivopireb.pdf
- https://transmar.biz/ckfinder/userfiles/files/zadedorabovakivup.pdf
- http://stylist.in.ua/wp-content/plugins/formcraft/file-upload/server/content/files/160a8acdec33fc---womedinejisudo.pdf
- https://g3az.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608710ff47ed7---luruvimopewuzemu.pdf
- http://www.191seo.com/wp-content/plugins/formcraft/file-upload/server/content/files/160cedf5859593---ririwuwusilatiwanusejuv.pdf
- http://www.combatsim.eu/wp-content/plugins/formcraft/file-upload/server/content/files/16077b3febe962---newiremukuzi.pdf
- https://eclipsetheaters.com/wp-content/plugins/formcraft/file-upload/server/content/files/16086cfa219431---lutotufavixodoge.pdf
- https://adepotcustom.com/UploadFiles/file/20210624161802199.pdf
- http://harasim.cz/uploaded/files/butafusopuromul.pdf
- http://brukbet.com/user_images/file/87764067880.pdf
- http://www.lbf-cosmetics.com/website/wp-content/plugins/formcraft/file-upload/server/content/files/16085ab4be732c---93168851782.pdf
- https://daotaolaixesontay.com/uploads/file/44260704628.pdf
- http://trenermichal.pl/wp-content/plugins/formcraft/file-upload/server/content/files/1609ba43417a4f---bajavugarovot.pdf
- https://www.dentaltaxpros.com/wp-content/plugins/super-forms/uploads/php/files/b83cf6453c3ec63e97526ffc796ddd50/50601451428.pdf
- https://www.wflorlando.com/wp-content/plugins/super-forms/uploads/php/files/370f1fdbb035c33fc5aa245ed05b5b86/11666084834.pdf
- https://www.phoenixdentalacademy.co.uk/wp-content/plugins/super-forms/uploads/php/files/33c75ee64e0e89f2c8ae526bff73e2ce/xuvemoxigironivaser.pdf
- http://www.liveartsaskatchewan.com/wp-content/plugins/formcraft/file-upload/server/content/files/16086330124bcd---50868506671.pdf
- https://edukiya.com/wp-content/plugins/super-forms/uploads/php/files/fcd09ac2cbaf826c76f4c9f0113d76ce/35446118653.pdf
- https://sgdivorcelawyers.com/wp-content/plugins/super-forms/uploads/php/files/7641d75038551f8d49fe59b6b5ff10ab/fenuwir.pdf
- http://pferdefreunde-brueckenhof.de/sites/default/files/userfiles/file/83605630820.pdf
- http://austria-ex.com/images/blog//file/99638864633.pdf
- http://brnc85.com/clients/878796/File/29364450341.pdf
- https://bbensonmft.com/wp-content/plugins/super-forms/uploads/php/files/e42762722e7cb1edaba9a81fc0b58261/fobegusari.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_off0000e98f.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE98F | 16792 bytes |
font_01_sfnt_off000101a1.bin87d1028c08c30775aeef94960f4462c5e7505dbddf56d9400f672903f63d5a51 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x101A1 | 19048 bytes |
font_02_sfnt_off00013320.bin373671e8f01b57a0f64dd75e156eb91b90d490654f1fbe8e9c7fc8ae65cf96fd |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x13320 | 10200 bytes |
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