MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It functions as a link farm, with numerous embedded URLs pointing to compromised CMS uploads and disposable hosting. These links likely lead to further stages of a phishing or malware distribution campaign.
Machine Learning
- Nyx PDF Classifier malicious score 0.9947
Heuristics 6
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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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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://www.chortho.co.uk/wp-content/plugins/super-forms/uploads/php/files/phcst2hv26uip2binh7s667gvu/1355795202.pdf
- https://sodigital.it/wp-content/plugins/formcraft/file-upload/server/content/files/160af79127d9a8---67008833696.pdf
- https://yastudio.net/wp-content/plugins/super-forms/uploads/php/files/b6ddb4bc557343da3b0532dbbaa0cc94/9585254304.pdf
- https://charterfori.ir/basefile/charterforiir/files/79896409595.pdf
- https://alenakovalchuk.ru/wp-content/plugins/super-forms/uploads/php/files/62f8a6d40dd8f1a720fa249c62c0d3d6/pezevafuf.pdf
- http://becro-plast.hr/wp-content/plugins/formcraft/file-upload/server/content/files/1607c54234184e---12523999097.pdf
- http://www.ponderosafestival.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c89721c18a0---29298536894.pdf
- http://www.makattakasinti.com/wp-content/plugins/formcraft/file-upload/server/content/files/160704e398e8df---texapelav.pdf
- https://beyondpins.com/calisma2/files/uploads/79606722308.pdf
- http://www.oknookna.pl/wp-content/plugins/formcraft/file-upload/server/content/files/1608c3d2a69444---96979449256.pdf
- http://chiengthai.com/file_media/file_image/file/81710098149.pdf
- http://bjzjygj.com/fckeditor/editor/filemanager/connectors/php/userfiles/file/goxizofogi.pdf
- https://www.alongsideasia.com/wp-content/plugins/super-forms/uploads/php/files/f641c38e54d8b9ada89b84cb4c29324e/40347641388.pdf
- https://www.unicodesystems.com/wp-content/plugins/super-forms/uploads/php/files/2lc19nqs896819g13gnhbk7m31/27791755171.pdf
- http://sts-logistika.ru/wp-content/plugins/super-forms/uploads/php/files/d976f8ad13f8eba7f10de6c15ca011aa/87867097700.pdf
- https://protectname.xyz/whoisprivacy/userfiles/files/93325602544.pdf
- http://triumphtoday.org/wp-content/plugins/formcraft/file-upload/server/content/files/1608566073f030---tubofanedebogidojug.pdf
- https://expungemyrecordnj.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c8a8dedae84---71606705320.pdf
- https://www.beadvised.co.uk/wp-content/plugins/super-forms/uploads/php/files/4df1ac26db866240ecdb6296885185b2/begen.pdf
- http://www.britocunhaadvocacia.com.br/home/wp-content/plugins/formcraft/file-upload/server/content/files/16078026b8074a---74651951090.pdf
- http://www.sunargrup.com.tr/wp-content/plugins/super-forms/uploads/php/files/asq1lltlhat3emcuddlv0s7os2/manojateruluwivejujalotib.pdf
- http://www.itbaloch.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d8141714637---jakeba.pdf
- http://hzjksj.com/images/upload/File/94488099746.pdf
- https://medprobr.com.br/wp-content/plugins/super-forms/uploads/php/files/7e82bfe74b515fdbba5ec6ed769072c8/fatejaremurogezuz.pdf
- https://feedproxy.google.com/~r/skout/mBVl/~3/PmAiG5ZyT-k/uplcv?utm_term=commands+in+minecraft+to+build+a+house
- 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_off0000fc6a.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xFC6A | 16792 bytes |
font_01_sfnt_off0001147c.bin95977c7edc77270b64718b4031cdcee351155f74a4e84d22bc172f1bd926f075 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1147C | 17388 bytes |
font_02_sfnt_off0001418c.bin61e30dd8c805307c8acd900db8444dbd96e7c8f73898ef328af5c9b0ef9baf93 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1418C | 11012 bytes |
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