MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1204.002 Malicious Link
The PDF contains a link farm pointing to numerous compromised WordPress sites, indicating a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly suggest malicious intent. The document body is heavily obfuscated and unreadable, providing no direct user-facing content, but the presence of external links and the 'PDF_SEO_DISPOSABLE_LINK_FARM' heuristic confirm the nature of the attack.
Machine Learning
- Nyx PDF Classifier malicious score 0.9927
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 http://tradeweb.es/userfiles/file/61257496138.pdf
- https://happycustomerservice.com/wp-content/plugins/super-forms/uploads/php/files/7e1dd1d2978e6abb06b654ac94f4e281/vilugifovibigajewatirug.pdf
- http://ranaghatpchsschool.org/userfiles/file/ledesiguxuwuvoxuzodadiku.pdf
- http://thanhlamresort.vn/wp-content/plugins/formcraft/file-upload/server/content/files/160730fec89a51---noviwufanobobububoxoni.pdf
- https://dsodrecital.com/wp-content/plugins/formcraft/file-upload/server/content/files/16075083e15b2a---30949590285.pdf
- https://mcq-exambd.com/app/webroot/ckfinder/userfiles/files/juraniluxa.pdf
- http://www.adatechotomasyon.net/wp-content/plugins/formcraft/file-upload/server/content/files/160ac4b8614fd8---zifux.pdf
- https://bellevuecommunityfoodbank.org/wp-content/plugins/super-forms/uploads/php/files/edfa729600ce30ae2a46fd2ae4e6ff70/83442491940.pdf
- http://classtool.info/upload/files/povironuvufidez.pdf
- http://www.combatsim.eu/wp-content/plugins/formcraft/file-upload/server/content/files/1608a2903afba3---78130064046.pdf
- http://blpest.com/UserFiles/file/88131432486.pdf
- http://straub-online.ch/userfiles/files/47853602771.pdf
- https://lasvegasrebath.com/wp-content/plugins/super-forms/uploads/php/files/e4793269dbdf8076d696eba82d8ea324/puperipaxada.pdf
- https://www.mercedesbenzofaustinservice.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609adf8400a13---3222349476.pdf
- http://a-kamen.com/userfiles/file/35957434541.pdf
- http://xn--90ad5ackt1d.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/9b24fbec9eb142b076e0e116925ed5ae/wibuwunajuredesak.pdf
- https://vettercycles.ch/userfiles/files/luwukisawumokagamubaf.pdf
- http://getem.plfiles/file/75992139147.pdf
- http://hitecds.com/userfiles/file/25106385288.pdf
- http://www.dereformasenalicante.com/archivos/files/gizifi.pdf
- https://www.havanasalsa-dance-tours.com/wp-content/plugins/super-forms/uploads/php/files/6e053edb0207350bfe4fe81bb4bcd243/44080197389.pdf
- http://claudiodauelsberg.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160c1925b3aec4---8869500242.pdf
- http://www.chinahkcarplate.com/wp-content/plugins/formcraft/file-upload/server/content/files/160cc4b88b08e1---31014060983.pdf
- https://feedproxy.google.com/~r/Uplcv/~3/FevRqgeaUVY/uplcv?utm_term=every+tailed+beast
- 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 4
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000fd53.bin9144d19a6b5107e30ae146bf127a49f7b986887ece4bac7e1e17b5b84f10ef30 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xFD53 | 17392 bytes |
font_01_sfnt_off00012a17.bin86e0ff5759f90f2d669e468886a80692f5adccfcd76ab86e388d8b8273c9371e |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x12A17 | 2040 bytes |
font_02_sfnt_off0001337f.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1337F | 16792 bytes |
font_03_sfnt_off00014b96.bin945b8fa3a45f0a0d045e374421e46aa4b38f595f3804d96c731ce5b27f1718d8 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x14B96 | 10320 bytes |
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