MALICIOUS
164
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 phishing or malware distribution attempt. It contains embedded JavaScript and numerous external URIs, many of which point to compromised WordPress sites or disposable hosting, forming a link farm. The primary purpose appears to be redirecting users to malicious content or downloading further payloads.
Machine Learning
- Nyx PDF Classifier malicious score 0.9947
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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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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Embedded JS stream low PDF_JSPDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
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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://infrive.ru/uplcv?utm_term=hand+with+a+mouth
- https://kuechentreff-schmid.de/wp-content/plugins/super-forms/uploads/php/files/alrninht6irh9hmllmpbq46kun/43290948556.pdf
- https://fedico.ca/upload/editor/file/44817801394.pdf
- http://fairway.cc/images/blog//file/nabidibafupowopijoge.pdf
- https://napraforgohotel.hu/upload/file/zijidawaxajeguwabox.pdf
- https://www.alertgy.com/wp-content/plugins/super-forms/uploads/php/files/6ae60c6e7ef5579a2367fce6556334ae/41150805510.pdf
- http://myucpb.net/userfiles/file/45826404238.pdf
- http://www.malagatour.es/ckfinder/userfiles/files/vezera.pdf
- https://www.toptalentusa.com/wp-content/plugins/formcraft/file-upload/server/content/files/16089fd6c49710---pamemubagujode.pdf
- http://localhomesales.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/16081acfa395b8---7718094443.pdf
- https://personalloan2u.com/wp-content/plugins/super-forms/uploads/php/files/29be78bbb869a8f09aae92262c82df13/29798784681.pdf
- http://gagutp.com/sa_upload/userfiles/file/20210621101103.pdf
- http://stlnsk.ru/uploads/file/zotazemudegukibezibawap.pdf
- https://charterboatdeliverance.com/uploads/files/pibiwulema.pdf
- http://carnow.jp/js/upload/files/14764560154.pdf
- https://www.kiakaha.gr/wp-content/plugins/super-forms/uploads/php/files/4v6namcaue0nuf8nmsn7mgqch5/rilelurinokip.pdf
- http://newabel.com/ckfinder/userfiles/files/negusularimaxufu.pdf
- http://iideree.org/wp-content/plugins/formcraft/file-upload/server/content/files/16098b4af44473---69810727688.pdf
- https://deniz-sogutma.org/img/userfiles/file/vedijezovalovomunitixepaw.pdf
- http://veronicanealhome.com/wp-content/plugins/formcraft/file-upload/server/content/files/2/160bef9895e81e---94841469234.pdf
- http://fructusartis.com/i/File/kitadolejudawe.pdf
- http://bielwod.com/userfiles/file/zudojinidaxotumepofuk.pdf
- http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c3581fcaa7f---78719640274.pdf
- https://www.urban-quartz.co.uk/wp-content/plugins/super-forms/uploads/php/files/29002a105bfc65428c508955b3e9388a/98482070485.pdf
- http://www.191seo.com/wp-content/plugins/formcraft/file-upload/server/content/files/16073529887c73---32187223659.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_off0000ef5d.bin762f5005222b8bde7bdd686644d38d9fdad48dd40e1d751bcc6b830beac4cbaf |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xEF5D | 17732 bytes |
font_01_sfnt_off00011d19.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11D19 | 16792 bytes |
font_02_sfnt_off00013530.bin71d3c73c43dd1e5a02d9a84a82ebaeb87ef20841da7dd579c6fb1ed48781074e |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x13530 | 10244 bytes |
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