MALICIOUS
176
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. The heuristics reveal it contains numerous links to compromised WordPress sites and disposable hosting, suggesting it's part of a link farm designed to redirect users to malicious content. The presence of embedded URLs and the nature of the heuristics point towards a phishing or malware distribution campaign, likely initiated via spearphishing attachment.
Machine Learning
- Nyx PDF Classifier malicious score 0.9951
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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Clickable URI points to raw IP address medium PDF_URI_IP_LITERALPDF contains a clickable HTTP(S) action whose host is a literal IPv4 address. Legitimate documents normally link to named domains; raw-IP destinations are common in disposable phishing and malware-delivery infrastructure.
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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://coretry.ru/uplcv?utm_term=critical+care+interview+questions+and+answers
- http://www.pirac.org/wp-content/plugins/super-forms/uploads/php/files/84242ba05a9bda6b636cd9fe1641b064/bowokorar.pdf
- http://104.156.58.56/~web2inbox/wp-content/plugins/formcraft/file-upload/server/content/files/160c179693d810---6530930840.pdf
- http://www.blackhillsdancecentre.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c152449a24e---40207393586.pdf
- http://www.kliningstroy.ru/wp-content/plugins/formcraft/file-upload/server/content/files/1607135cf0e354---39217498840.pdf
- https://www.burit.net/wp-content/plugins/formcraft/file-upload/server/content/files/1607b66809c4b8---34359929758.pdf
- http://alliance-ltd.com/userfiles/bavatarakudiriviwib.pdf
- http://sillajen.com/fckeditor/_upload/file/44949656464.pdf
- https://www.reparaciondebomba.com.ar/wp-content/plugins/super-forms/uploads/php/files/n5tsedrpq1khdmcqq5qvbu0eq7/gifozosasu.pdf
- http://yatros.ro/wp-content/plugins/formcraft/file-upload/server/content/files/160a404b8bce62---rajatubade.pdf
- http://www.sarajevo-inn-grunewald.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606f6c3679a82---jamuwobavirasimiwisusire.pdf
- https://haps.company/wp-content/plugins/super-forms/uploads/php/files/b6cau5kbngp6kl3vjfjoc0sdo5/91175259846.pdf
- http://www.emporiocaritaspisa.it/wordpress/wp-content/plugins/formcraft/file-upload/server/content/files/160802a26ec042---dasuxoka.pdf
- http://cleannshieldflorida.com/wp-content/plugins/super-forms/uploads/php/files/0ce33bc508d800e0f395d8140984cdf4/29383930445.pdf
- https://xlspandoek.nl/userfiles/file/wavutiwapesamosi.pdf
- http://oryginalnedekoracje.pl/userfiles/file/59304605191.pdf
- http://www.jamesbgriffinlaw.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c873a90dd86---40681279942.pdf
- https://robert-zauer.cz/userfiles/file/fudifanegenusixod.pdf
- http://bridgesonthepark.com/wp-content/plugins/formcraft/file-upload/server/content/files/16077cfbdccbab---50021770273.pdf
- http://alfavit.tv/userfiles/file/75275151219.pdf
- http://www.sensible-seeds-premium.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a818ac1e1ab---tabezebupudorabeno.pdf
- https://ceadersvalet.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608a523fc97cb---fizegepixinazopatez.pdf
- https://marksiegeldds.com/wp-content/plugins/super-forms/uploads/php/files/e182ce1886bbe6757f1ef153124b57a0/25366609044.pdf
- http://akbmodel.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bb5f45de450---70007812312.pdf
- https://atcotourismtravel.com/userfiles/file/lisowilopokowezi.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_off0000ed09.bin93e387ae834167d4ed2f03526075ad3bceed1c0b2cc9701aa4347499094f53b7 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xED09 | 10792 bytes |
font_01_sfnt_off000105e2.bina1aa2089e10cc640984b780260e8f8114846ae2b36d30cfb17a8dc36565b329e |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x105E2 | 16592 bytes |
font_02_sfnt_off000130b6.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x130B6 | 16792 bytes |
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