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. It contains numerous links pointing to compromised WordPress sites, suggesting a link farm used for distributing malware or phishing content. The document body, though heavily obfuscated, appears to be a lure related to PDF size increases, likely to trick users into visiting the malicious URLs.
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://coretry.ru/uplcv?utm_term=pdf+size+increase+in+kb PDF link annotation
- https://bettenbaehren.de/wp-content/plugins/formcraft/file-upload/server/content/files/160b971e22b94c---fegeni.pdfIn PDF document text
- https://dermo.com/wp-content/plugins/formcraft/file-upload/server/content/files/16086336560066---bavaguminozujela.pdfIn PDF document text
- http://www.loicadesacavem.pt/wp-content/plugins/formcraft/file-upload/server/content/files/160c0e64e5dc25---jubigimedin.pdfIn PDF document text
- https://www.quatainvestimentos.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160b906be68720---libusuvenulaxuxuduremi.pdfIn PDF document text
- https://spherule.org/wp-content/plugins/super-forms/uploads/php/files/7a6649860eebabfb3934e57af436f84e/64921221523.pdfIn PDF document text
- https://www.ideaklinikbursa.com/wp-content/plugins/formcraft/file-upload/server/content/files/160786305cdcd3---zopojulo.pdfIn PDF document text
- https://abeess.com/userfiles/file/wofipagupinuvir.pdfIn PDF document text
- https://swotin.com/wp-content/plugins/formcraft/file-upload/server/content/files/16085fc2d37aaa---67704780098.pdfIn PDF document text
- https://udachi.co.th/wp-content/plugins/super-forms/uploads/php/files/0pv4em3bpktf9pu5v9djuscfvh/motokojiba.pdfIn PDF document text
- https://functionalmovement.gr/wp-content/plugins/super-forms/uploads/php/files/bf423088f6bb954ae9bf7c6660e221f3/fofofikijaxamupixinavumip.pdfIn PDF document text
- http://anhuizhkj.com/upload_fck/file/2021-5-24/20210524012438207408.pdfIn PDF document text
- https://agmatbaa.com/upload/files/19117943738.pdfIn PDF document text
- https://qualitycountscleaning.com/wp-content/plugins/super-forms/uploads/php/files/9037ecb3d80f81c8779fa3b025ab7750/98565179450.pdfIn PDF document text
- http://ampletrekking.com/userfiles/file/xavon.pdfIn PDF document text
- http://caribsplash.org/wp-content/plugins/formcraft/file-upload/server/content/files/160a6b87a5d1cc---megawogegetojo.pdfIn PDF document text
- https://briljant-maleri.se/UserFiles/files/guxinoxovezad.pdfIn PDF document text
- https://telenovella-bg.com/files/75131543138.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_off0000e7dc.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE7DC | 5236 bytes |
SHA-256: 3d8272f44dbf583e83e9710b9f3b2f0f417c8ea0714f05741d1195f455763e33 |
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font_01_sfnt_off0000f9cd.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF9CD | 10996 bytes |
SHA-256: fe10ea9bea11676b86863702e90fbe9ce5173eb525aa7b439bb27ff8dc66c8bb |
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