MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains numerous links pointing to compromised WordPress sites and disposable hosting, suggesting a link farm designed to redirect users to malicious content. The presence of embedded URLs and the overall structure strongly suggest a phishing or malware distribution campaign.
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://irlanc.ru/uplcv?utm_term=funny+names+and+last+names
- http://www.carolglassman.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b078b25ffd0---46196786209.pdf
- https://festival.bg/fckeditorfiles/file/54330632357.pdf
- http://adria-ex.com/images/blog//file/41500089853.pdf
- http://pspectr.ru/userfiles/file/5624698425.pdf
- http://www.webtony.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160a06444ed9b8---somawi.pdf
- https://law.com.sg/wp-content/plugins/super-forms/uploads/php/files/a40c8d2346c43f25da69781cd35447d7/37438973651.pdf
- http://baanpowertrain.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608c1b5a23235---nusaso.pdf
- https://www.northernillumination.com/wp-content/plugins/super-forms/uploads/php/files/7e0507424ccb4455c094ac7463c29ab5/sigexuputexumolapoz.pdf
- http://cateringkieuan.com/uploads/userfiles/file/diruti.pdf
- http://www.doctor-carpet.com/wp-content/plugins/super-forms/uploads/php/files/ftc25q8pngc4qqiqravanm89l5/xujinuxenoxuzejovupiwok.pdf
- http://aaaexpressheating.com/userfiles/file/88273822241.pdf
- http://gancza.pl/userfiles/file/godele.pdf
- http://www.deadclan.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160733b352ae7c---7020652306.pdf
- http://www.ellisrasbetonwerke.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/1609fc2da04a14---duzagaradiverag.pdf
- https://alcc.vn/wp-content/plugins/super-forms/uploads/php/files/svqf7j18t3e77smbuf88ik42sd/48351789758.pdf
- https://maloneslandscape.com/wp-content/plugins/formcraft/file-upload/server/content/files/16081bba057631---fugewipoto.pdf
- http://dom-nenilovo.ru/wp-content/plugins/super-forms/uploads/php/files/7910bd7fc3ca3185c2addc66242833f6/tixipa.pdf
- https://binhruamuinanobac.com/wp-content/plugins/super-forms/uploads/php/files/lcrp0nkq7olkqql2vicmuhflul/54979084435.pdf
- http://www.allatpatikapecs.hu/images/file/bagigow.pdf
- https://thealloywheelcentre.co.uk/wp-content/plugins/super-forms/uploads/php/files/2784999cfba13e75d0505c8fac01dfa9/52910540721.pdf
- http://clarkstownhs64.com/clients/2/25/255c49a504cbad61718694d8b78dfcdd/File/40912679659.pdf
- http://makaeximworld.com/wp-content/plugins/formcraft/file-upload/server/content/files/16077c7becb084---87557112219.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_off00011dd2.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11DD2 | 16792 bytes |
font_01_sfnt_off000135e9.bin24db27de96bafdfb80db9e310608d489112ca40f809c6d00220120adfaad610f |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x135E9 | 10288 bytes |
font_02_sfnt_off00014d18.bin427c14406e124d6a55425f282c3f2472e02ed15f0c82b52cc37a3a247bedf4ab |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x14D18 | 17420 bytes |
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