MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
This PDF file was flagged by multiple heuristics and a machine learning classifier as malicious, with ClamAV identifying it as a phishing trojan. It contains a link farm pointing to numerous compromised WordPress upload directories, suggesting an attempt to distribute malicious content or conduct phishing. The embedded URLs, such as 'https://ketchas.ru/uplcv?utm_term=sarcastic+quotes+about+school', are likely part of this distribution or phishing scheme.
Machine Learning
- Nyx PDF Classifier malicious score 0.9952
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://ketchas.ru/uplcv?utm_term=sarcastic+quotes+about+school
- http://iideree.org/wp-content/plugins/formcraft/file-upload/server/content/files/1606f61ec0208d---57293463112.pdf
- http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608b84165c8d1---pukexisisimitupe.pdf
- http://www.garriagricola.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606ca8d0381d1---dajidi.pdf
- https://www.ferienhof-schneider.de/wp-content/plugins/formcraft/file-upload/server/content/files/160761a0f2383d---sifipexuturosasosasogifal.pdf
- http://studiogiovannone.com/userfiles/files/foxenefupofupezalo.pdf
- http://agiteam.org/clients/b/b0/b0c4817036ef1cb73596cc935f3fa86d/File/98313136570.pdf
- https://www.medicalart.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/1606c97abc43c6---narezemuwuponitawoxemuno.pdf
- http://maidnheaven.com/wp-content/plugins/formcraft/file-upload/server/content/files/16088f4ef65998---56053430257.pdf
- https://area34.info/wp-content/plugins/super-forms/uploads/php/files/tbpe9lian17ebfi0apn7oed377/wolazotimimogewe.pdf
- http://hongdanhaudio.com/luutru/files/77277199555.pdf
- http://www.chicagoalphas.com/wp-content/plugins/formcraft/file-upload/server/content/files/16070f61a5103f---pikagexokosukuwitunazira.pdf
- https://dalnoboy.com/data/filestorage/upload/files/vawixejexutozesowu.pdf
- https://lllk.ru/wp-content/plugins/super-forms/uploads/php/files/cd94642bb5e86e38809794206ca95812/muromeni.pdf
- https://islandsvefir.is/wp-content/plugins/super-forms/uploads/php/files/od19io1nmvhkt2kv96sr3oa41l/53023923070.pdf
- https://broodjedenbosch.nl/ckfinder/userfiles/files/23797383569.pdf
- https://datatech-int.com/userfiles/file/bidozafetata.pdf
- http://mariopresto.pl/userfiles/file/botipajonusebafuwuwimajum.pdf
- http://rethabise.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/1608b55ad0d67d---buviridirinaporat.pdf
- http://expertsystemgroup.com/file_media/file_image/file/gokudewudosukutoposovu.pdf
- https://parquesanalbertohurtado.cl/ckfinder/userfiles/files/nisokekazupovofa.pdf
- http://worksafeorg.com/wp-content/plugins/super-forms/uploads/php/files/hqafpfqi5qrnka6hh048ot3f47/51935043912.pdf
- https://cradlegold.com/wp-content/plugins/super-forms/uploads/php/files/cjah7tkq9bqcpsro497hjigi45/bomomeparasuselanepulopa.pdf
- https://www.tonygssoulfood.com/wp-content/plugins/super-forms/uploads/php/files/0964d8620e4ebb1a54eb6bfd9a7d400c/merelazatofewomupenal.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_off0000f578.bin853dd664ddbe9ecd32ee8418bd92c80fad2ef7d31fef96868130e1b3df4d8a0a |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF578 | 10684 bytes |
font_01_sfnt_off00010e11.bine88183bb06160ee625f3866f86eee93be7fc52fc78deeef0917e2bcdff332a60 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10E11 | 17756 bytes |
font_02_sfnt_off00013c94.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x13C94 | 16792 bytes |
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