MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The heuristics reveal it functions as a link farm, directing users to compromised WordPress sites that host further malicious PDFs. The document body, though heavily obfuscated, contains text related to an English exam, suggesting a phishing or social engineering lure. No scripts were extracted, but the overall pattern points to a phishing campaign using compromised infrastructure to distribute malware.
Machine Learning
- Nyx PDF Classifier malicious score 0.9998
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=examen+para+saber+el+nivel+de+ingles+pdf PDF link annotation
- https://provisionsinternational.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606f959d565d2---vudore.pdfIn PDF document text
- https://proff-doors.ru/wp-content/plugins/super-forms/uploads/php/files/29890029df4fcbb1996a631a032894f4/40369102358.pdfIn PDF document text
- https://www.paparazzirestaurant.com.au/wp-content/plugins/super-forms/uploads/php/files/3708342d39dbad84a1d742e6edce2fe2/molulukupejoj.pdfIn PDF document text
- https://centar-znr-zop.hr/wp-content/plugins/formcraft/file-upload/server/content/files/16072a571ef284---26452102605.pdfIn PDF document text
- https://boyanbolyarski.com/userfiles/file/58570116670.pdfIn PDF document text
- https://www.lindopoint.it/wp-content/plugins/super-forms/uploads/php/files/966f72b41b282677b31597042384cfe6/zomawuwolide.pdfIn PDF document text
- https://menlopark.com/wysiwygfiles/file/nojubewawavawenebo.pdfIn PDF document text
- http://xn--b1ahhafccpgkb2bxo.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/1a7cbc4d176e1be511548fdfe9475cb4/kabidurebifuzelenu.pdfIn PDF document text
- https://www.marbelitesa.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/160747c2685516---liwevo.pdfIn PDF document text
- http://www.canadiantreasurer.com/wp-content/plugins/formcraft/file-upload/server/content/files/16099820c4f6b1---puluzupuf.pdfIn PDF document text
- https://voolabs.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606c94a39fd72---29628498827.pdfIn PDF document text
- https://alula.com/wp-content/plugins/super-forms/uploads/php/files/010942b6522f9c56712113ea6d4315fc/79404813262.pdfIn PDF document text
- http://wksystems.net/HotelEstimator/userfiles/file/79030255958.pdfIn PDF document text
- https://higher-reason.com/wp-content/plugins/super-forms/uploads/php/files/6fkmnqlglbbt76fhlrrqm73f6q/96370602888.pdfIn PDF document text
- http://www.oknookna.pl/wp-content/plugins/formcraft/file-upload/server/content/files/1607a67bec9ba9---14107525270.pdfIn PDF document text
- https://accesoriosalmayor.com/images/userfiles/file/xonuxokizapewan.pdfIn PDF document text
- http://orgue-chantepie.info/FCKeditor/upload/file/30280267767.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
- http://purl.org/dc/elements/1.1/In PDF document text
- http://ns.adobe.com/pdf/1.3/In PDF document text
- http://ns.adobe.com/xap/1.0/In PDF document text
- http://ns.adobe.com/xap/1.0/mm/In PDF document text
- http://ns.adobe.com/xap/1.0/rights/In PDF document text
- http://scripts.sil.org/OFLIn PDF document text
Extracted artifacts 2
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000df94.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDF94 | 5588 bytes |
SHA-256: 600a5d7f7efca66b09a95c591397ebdde295151bd22193585e4d3155faf4bb7d |
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font_01_sfnt_off0000f285.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF285 | 12672 bytes |
SHA-256: 6be4f3859ca39ca52e39d748f2644d232fede1795216cf3ae3c9428a15ee50d3 |
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