MALICIOUS
156
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 a link farm strategy, with many URLs pointing to compromised CMS upload storage and disposable hosting. These links likely serve as lures to phishing sites or malware downloaders, aligning with a spearphishing attachment attack pattern.
Machine Learning
- Nyx PDF Classifier malicious score 0.9988
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://synerhu.ru/uplcv?utm_term=metodolog%C3%ADa+de+la+investigaci%C3%B3n+educacional
- http://www.musicmaestrodiscos.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160854742cd93f---70921126026.pdf
- https://tkpmission.org/wp-content/plugins/formcraft/file-upload/server/content/files/160f75fdbbc75a---40102773044.pdf
- https://damsindia.org/admin/uploads/file/12085924740.pdf
- https://divorcioconsensual.com.br/wp-content/plugins/super-forms/uploads/php/files/2f294eac429bb87eddde497a01407a84/29997596482.pdf
- https://12shio2.com/contents//files/woxuvalarofenegugexe.pdf
- http://mirrorgallery.com/wp-content/plugins/formcraft/file-upload/server/content/files/160808bb034912---guziladivibimunilab.pdf
- https://topclassgardening.nl/images/file/24636909919.pdf
- http://www.iycadana.org/wp-content/plugins/super-forms/uploads/php/files/ruhgve77r1l3u59ql774iigch3/dekolosanoxalitipive.pdf
- http://cephedanismani.com/images/pages/file/timidawebanovufon.pdf
- http://stylist.in.ua/wp-content/plugins/formcraft/file-upload/server/content/files/16089a74739951---zixisiviredi.pdf
- http://jessicarossitto.com/clients/7/7c/7c16b8c799dae9ffcd1258f31d6ff645/File/jifipamakajakalasurovod.pdf
- https://atraba-holding.com/userfiles/file/lawom.pdf
- https://www.mercato.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/160839edc0c4f4---19386137825.pdf
- https://www.quatainvestimentos.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1607e391c10b8d---73967828043.pdf
- https://dermo.com/wp-content/plugins/formcraft/file-upload/server/content/files/160704fc5ca328---23912933448.pdf
- http://hotstamping.pl/files/file/61549094220.pdf
- http://deurwater.com/wp-content/plugins/formcraft/file-upload/server/content/files/160adaa2999bc5---fatidotavefimikika.pdf
- http://www.stockholmswingallstars.com/wp-content/plugins/formcraft/file-upload/server/content/files/160cf8437899dc---libeginoz.pdf
- http://cedule-plachty.cz/files/file/rodolama.pdf
- https://agrotehholding.ru/wp-content/plugins/super-forms/uploads/php/files/4c014538bd259df44b94bdc5e71d8a63/42314719527.pdf
- http://gapoom.com/upload/fckeditor/file/juzejaxugazifunoxavujapu.pdf
- https://technok.cz/wp-content/plugins/super-forms/uploads/php/files/dbb9b7ac608407696be7e98670a3cda7/80827629900.pdf
- http://synerfreight.com/syner_upload/images/files/24301819487.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_off000162fc.bin985d54b1e42660561fb3812b6789d7685f60d4d826a08e26da58be266bc0a295 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x162FC | 10804 bytes |
font_01_sfnt_off00017b8f.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x17B8F | 16792 bytes |
font_02_sfnt_off000193a1.binf8e68373a1aa3b9875329e5929e04bc98e95f552c2aa97daff9d3c6fbe1aa930 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x193A1 | 19640 bytes |
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