MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The PDF file contains a link farm pointing to numerous compromised WordPress sites, with many URLs leading to other PDF files. This structure is indicative of a phishing or malware distribution campaign, aiming to lure users to malicious content. The ML classifier and ClamAV detection strongly support its malicious nature.
Machine Learning
- Nyx PDF Classifier malicious score 0.9944
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://sireny.net/share/files/neviwogozigesijalixifi.pdf
- https://www.chinacimctrailer.com/wp-content/plugins/super-forms/uploads/php/files/b66fb56f273033f46d52c77d035a466a/3524470081.pdf
- http://www.marcado.ca/wp-content/plugins/formcraft/file-upload/server/content/files/160726dc501071---ludixisese.pdf
- https://vicotelecom.vn/static/source/images/file/jekunudewubi.pdf
- https://www.olympusnorge.no/wp-content/plugins/super-forms/uploads/php/files/62vjtdd6fbkec6on7f1j55bn6g/38348004610.pdf
- https://www.aceitedeoliva.com/wp-content/plugins/super-forms/uploads/php/files/faa1250eb5516318497f49de3fe24d9d/78775386867.pdf
- http://cleangroupbd.com/ck/upload/files/95202516055.pdf
- https://www.hotel-palladium.gr/wp-content/plugins/super-forms/uploads/php/files/b3ee5iciaat7rj6qk7fvfr5p2t/98994692616.pdf
- http://az4group.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160d7ce50b8211---26053207435.pdf
- http://barcelonasixtytwo.com/userfiles/file/zajek.pdf
- http://e-menu.hu/editor_up/57558376370.pdf
- http://maternites-catholiques.org/ressource/site-image/files/77031084058.pdf
- http://kystop.com/wp-content/plugins/super-forms/uploads/php/files/0vk6jbt374ik2f9o7pgo7euut3/feguzu.pdf
- https://www.zulilighting.com/wp-content/plugins/super-forms/uploads/php/files/57801f10dfde4c6c59313390518d08cf/wujotifamewesunisixudire.pdf
- https://mancomunidadvaldizarbe.com/userfiles/files/kitemelag.pdf
- http://cgt-fo-csc.fr/wp-content/plugins/formcraft/file-upload/server/content/files/1608b560355f34---sokijuzamopokok.pdf
- https://pelicanfinancialnetwork.net/ckfinder/userfiles/files/27341761522.pdf
- http://aliancegroup.su/wp-content/plugins/formcraft/file-upload/server/content/files/160723035e6efa---38847948783.pdf
- http://lalinpress.com/ckfinder/userfiles/files/kunidakaxef.pdf
- http://terminsk.by/pics/files/91048856076.pdf
- http://www.pirac.org/wp-content/plugins/super-forms/uploads/php/files/d12ce34058acbf107b28b7a2b8131408/newilozizubi.pdf
- http://serendipityorlando.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b6899cea1bb---waseguduguro.pdf
- http://bagumul.com/file_upload/spaw_upload/file/20210602223434.pdf
- https://manualismedicina.hu/fileok/file/vokerazuxafetewujapobi.pdf
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/3vuEKuznOb8/uplcv?utm_term=vbspu.ac.in+time+table+2018+pdf+download
- 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_off0000b8d0.bin6c08887b596ecb472c5a0482df8c2f828d83fc5b5d16111ed0caa1fced1b35dc |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xB8D0 | 1680 bytes |
font_01_sfnt_off0000c0cd.bin07ddf0323df2a3e3f95ef273feb7b5d6adfab5090ff7a5c52052d4de747be1f6 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xC0CD | 11544 bytes |
font_02_sfnt_off0000dc13.bin1f3915fea2bd9578dc9c981c1107465b4d43fc7c46f1cd82015a0e07f1f5cf88 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDC13 | 22192 bytes |
font_03_sfnt_off000113d3.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x113D3 | 16792 bytes |
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