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 phishing or malware distribution intent. It contains numerous links to external websites, many hosted on compromised WordPress installations, suggesting it functions as a link farm or redirects users to malicious content. The presence of embedded URLs and the nature of the heuristics strongly suggest it is part of a phishing campaign, likely delivered as a spearphishing attachment.
Machine Learning
- Nyx PDF Classifier malicious score 0.9953
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://cructi.ru/uplcv?utm_term=student+information+form+template
- https://www.tctnanotech.com/wp-content/plugins/super-forms/uploads/php/files/a64068de9ed786ded2db3f40a7d9d1ec/23552033868.pdf
- https://pluviaterra.mx/wp-content/plugins/super-forms/uploads/php/files/f0b04daa23e8a0a055958f8f6640f3da/visozezadelikaj.pdf
- https://bistro-8.com/wp-content/plugins/super-forms/uploads/php/files/5af1328679812ac1b042d3fa2fdae9fc/32160617145.pdf
- https://prsnashville.com/wp-content/plugins/super-forms/uploads/php/files/bedad2cbafb80f39f058b3d1267dcdac/ziregido.pdf
- http://goref.ru/files/file/54395716332.pdf
- http://www.medical-psychology.gr/wp-content/plugins/formcraft/file-upload/server/content/files/16083332157186---68168671616.pdf
- https://www.hdontheroadnapoli.it/wp-content/plugins/formcraft/file-upload/server/content/files/16075c5198ecc4---memafufizuwoboxogam.pdf
- https://stefandes.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b4019d62985---24528056302.pdf
- https://www.frankcapassoandsons.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c4201f0caf1---41864039242.pdf
- https://wodepcb.cn/uploadfiles/files/tilaxoset.pdf
- http://esrafisek.com/images_upload/files/2256642500.pdf
- http://compufoxmail.com/userfiles/file/zomomuwuruwuj.pdf
- https://www.lightingsolutionsinc.net/wp-content/plugins/super-forms/uploads/php/files/a3329ed1d1b3d8a3ca1f8e56896e27cb/mekevebejejawevevib.pdf
- https://successalpha.team/upload/files/12175616112.pdf
- http://gmei.lt/ckfinder/userfiles/files/rinodojupaburevujasat.pdf
- http://cesishotel.lv/res/wysiwyg/file/52683324878.pdf
- http://www.hkqi.com/wp-content/plugins/formcraft/file-upload/server/content/files/16072b4fc06ddf---70599006089.pdf
- http://altadirezione-consulting.it/userfiles/files/zivim.pdf
- http://www.etoiles-recrutement.com/wp-content/plugins/formcraft/file-upload/server/content/files/160823b17e984e---fowuserutinakajapijamezo.pdf
- http://argra.rs/wp-content/plugins/formcraft/file-upload/server/content/files/1609fe4417e083---jibalokesofusopawe.pdf
- http://web68s.com/upload/files/31811019547.pdf
- https://www.ezhealthcheck.com/wp-content/plugins/super-forms/uploads/php/files/eijal57ja3rpvkmftgs8of6d0q/57228384634.pdf
- http://wawabed.pl/uploads/userfiles/file/muxivukejirab.pdf
- http://ntep2008.com/UserFiles/File/48549309577.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_off0000cf4e.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xCF4E | 16792 bytes |
font_01_sfnt_off0000e760.binfe20c29990be5be69afa2de48f246531d4ea904597b621f40c33b150c2d9cdf0 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE760 | 16696 bytes |
font_02_sfnt_off000112ef.binc4196fcd186ad9ac255b208f8edd01e9dfec0360bf05e388df6f6c79572a7fe3 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x112EF | 10668 bytes |
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