MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains numerous links, many pointing to compromised WordPress sites or disposable hosting, suggesting it functions as a link farm to redirect users to malicious content. The presence of PDF link farm heuristics and compromised CMS upload links strongly supports this attack pattern.
Machine Learning
- Nyx PDF Classifier malicious score 0.9973
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://mithermomix.com.mx/wp-content/plugins/super-forms/uploads/php/files/f5b3f8a8e7911cc8e62e297df70a4d50/23115365993.pdf
- http://oldmotorsclub.com/files/file/xabajo.pdf
- https://vietnaminsight.biz/ckfinder/userfiles/files/nakuvovejofudif.pdf
- https://www.sir.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/1614fa3620bd22---36274004705.pdf
- http://studioaeditecne.it/userfiles/file/fifewinezolevoke.pdf
- http://hotelbasantresidency.com/uploads/panusilidit.pdf
- http://drzwiukryte.pl/userfiles/file/buperitodexetit.pdf
- http://ogcdc.org/uploads/ck_upload/files/kajafigo.pdf
- http://audiohrestomatiya.ru/content/file/wikubi.pdf
- https://sjaindonesia.com/sitefiles/file/jugap.pdf
- http://halongwave.com/userfiles/file/11334860394.pdf
- http://indago-rovigo.it/userfiles/files/xukarax.pdf
- http://olech-rzeszow.pl/userfiles/file/58905133068.pdf
- http://3e-recycling.ru/app/webroot/filesfiles/nulaguwolebesux.pdf
- https://nomortiga.com/contents/files/50887137419.pdf
- http://aaexpansionjoint.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613381278d94d---74902525640.pdf
- http://moyamoya.center/images/hand_uploaded/files/22133706834.pdf
- http://haphadoor.com/upload/files/22906214463.pdf
- http://avandcie-automation.fr/ckfinder/userfiles/files/fidijam.pdf
- http://jungvassar.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/82087786443.pdf
- https://transturist.ba/ckeditor/ckfinder/files/files/30475360321.pdf
- http://osmed.cz/app/webroot/files/files/98988027324.pdf
- https://cvssteelex.com/ckfinder/userfiles/files/berilosamirak.pdf
- https://f27szerviz.hu/upload/files/sosexapugegagajubitej.pdf
- https://mb-classic-service.de/userfiles/file/marisamuve.pdf
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/FevRqgeaUVY/uplcv?utm_term=usted+puede+ser+lo+bueno+que+quiera+ser+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_off0000bc60.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xBC60 | 16792 bytes |
font_01_sfnt_off0000d472.bin6b6cf5f69e320efb0fec146d9bd8f50db81ee4d022f151cc2354e182bcf3a804 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD472 | 17684 bytes |
font_02_sfnt_off000101f2.bin677d559cc15fadedcb6e9ba72bf710dd5d19e631330f3689c93006cac966cbca |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x101F2 | 10884 bytes |
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