MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains numerous external URIs and embedded links, many pointing to compromised WordPress sites or disposable hosting, suggesting a link farm or phishing lure. The document body is heavily obfuscated, preventing a clear understanding of its specific content, but the overall structure and URL analysis point towards a phishing or malicious redirection scheme.
Machine Learning
- Nyx PDF Classifier malicious score 0.9951
Heuristics 6
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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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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=how+to+quickly+thaw+scallops
- https://afriqueitnews.com/wp-content/plugins/super-forms/uploads/php/files/b1359ce69e9ba4725fa1b8c5897f0d4b/meniti.pdf
- http://aelma.com/sites/default/userfiles/file/fipiloxi.pdf
- https://www.advids.co/wp-content/plugins/formcraft/file-upload/server/content/files/16070c34733216---69042892566.pdf
- https://unicornproduction.gr/wp-content/plugins/super-forms/uploads/php/files/10b9a7970f4f5d2f61c7212e9e78a4ae/fiwikojidemevipit.pdf
- http://kadh.kr/bobod/upload/file/guviregapavesejemax.pdf
- https://interesttour.com/wp-content/plugins/super-forms/uploads/php/files/d5b99bcbf14425cb311fd8c2df065a28/sesawetenawud.pdf
- https://rrr71.ru/upload_picture/12008261295.pdf
- http://www.dadosefatos.net.br/wp-content/plugins/formcraft/file-upload/server/content/files/160703816c57d1---bovavejaromexafisasote.pdf
- https://ocvirapuato.com.mx/wp-content/plugins/super-forms/uploads/php/files/33f6ed716cae0b1a1b9ab3fa343a9dac/57821411117.pdf
- http://www.iycadana.org/wp-content/plugins/super-forms/uploads/php/files/89rg2o7td7loqjs2tcj3angkb2/48133209785.pdf
- http://bizwd.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607d04b6b173f---98846296693.pdf
- https://promocionesnma.com/wp-content/plugins/super-forms/uploads/php/files/a2f936765ab8848db59699df1cf8da8f/42180758063.pdf
- http://muabannhagiare.net/images/uploads/files/gezerilugoxipalikisupub.pdf
- https://www.birdandwildlifeteam.com/wp-content/plugins/formcraft/file-upload/server/content/files/16078b868b5f69---xevuses.pdf
- http://uni-farm.pl/ckfinder/userfiles/files/lilorama.pdf
- https://citronel.com/userfiles/files/sivesofemubujalonutebos.pdf
- http://architettoannalisatinelli.it/userfiles/files/11365030291.pdf
- http://becro-plast.hr/wp-content/plugins/formcraft/file-upload/server/content/files/160a96af35bcf5---78810305161.pdf
- http://yoron.net/up/files/dikox.pdf
- http://famcareconnect.org/wp-content/plugins/formcraft/file-upload/server/content/files/1608f454216fb1---50614372476.pdf
- https://pluviaterra.mx/wp-content/plugins/super-forms/uploads/php/files/8b70644cc792a80a1a552bc610fa1c15/21516826102.pdf
- http://aeskulap24h.com/wp-content/plugins/formcraft/file-upload/server/content/files/160cb28325d4d7---vikulugunopugavilaf.pdf
- https://mygamedaysports.com/wp-content/plugins/super-forms/uploads/php/files/9f9744c80a2e55f1d2971af9d8ee8bce/87932585664.pdf
- http://triumphtoday.org/wp-content/plugins/formcraft/file-upload/server/content/files/160b7532447de6---vevatemarekopuku.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_off0000ed2d.bin3f4db199649cb061c17376bc30ee9a10ca8f3148732dda0d5b5c80f195c0250d |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xED2D | 16820 bytes |
font_01_sfnt_off000118ed.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x118ED | 16792 bytes |
font_02_sfnt_off00013104.bin89989664c617e3db541ded748b7fe0750015d53774987072a32c20e4da6e4fb5 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x13104 | 10664 bytes |
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