MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
This PDF file was identified as malicious by ML classifiers and ClamAV, indicating a phishing or malware distribution intent. It functions as a link farm, containing numerous embedded URLs pointing to compromised WordPress sites, likely to redirect users to malicious content. The presence of external URI heuristics and the PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM rule further support this attack pattern.
Machine Learning
- Nyx PDF Classifier malicious score 0.9780
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://klingende-zeder.de/wp-content/plugins/formcraft/file-upload/server/content/files/160aaa39c3a71c---lenuxikokaruwa.pdf
- https://www.reachcast.ca/wp-content/plugins/super-forms/uploads/php/files/a34cdd02e03313f1d68e79e064371ed0/gubavizub.pdf
- http://www.iycadana.org/wp-content/plugins/super-forms/uploads/php/files/nchl5q61jknc00gq8ef1unjrn6/tugaretapalox.pdf
- http://thm-holding.ru/wp-content/plugins/super-forms/uploads/php/files/7c8dcb39df122f8ecccb2ee8d6bebd1e/46431351143.pdf
- http://geredekombiservisi.com/userfiles/file/vexojexogozomukokoripu.pdf
- http://drstevealbrecht.com/wp-content/plugins/super-forms/uploads/php/files/0b0ac2f677cefc316efcd845dc212e20/76057017425.pdf
- https://inclinedigital.com/wp-content/plugins/formcraft/file-upload/server/content/files/16094320046cca---sutulopeziwewopokuduri.pdf
- https://www.capitalroofingct.com/wp-content/plugins/formcraft/file-upload/server/content/files/160cf3ec1dd7d2---xupewizefenamelo.pdf
- https://cutletsmeat.com/wp-content/plugins/formcraft/file-upload/server/content/files/16071369073f09---gaxunejujurogewis.pdf
- https://notofthisgalaxy.com/wp-content/plugins/super-forms/uploads/php/files/eieu4sbjpq9693gq7fadrvptaf/76486872121.pdf
- https://sipare.com.ar/wp-content/plugins/super-forms/uploads/php/files/6smop7lgg6s24c3fdsu3p1npqs/gedukapevokitiwepijub.pdf
- http://ankurgroups.com/userfiles/file/fumadox.pdf
- http://sip7.online/wp-content/plugins/super-forms/uploads/php/files/a1e90c2c4be8041e48fa1fbbffd740d0/fufuveweliveb.pdf
- http://www.hcibatiment.fr/wp-content/plugins/formcraft/file-upload/server/content/files/1609accb16b11b---ledipolewa.pdf
- https://www.frontierexim.com/wp-content/plugins/super-forms/uploads/php/files/3l7n8kvhb75dseab10g500moel/vilale.pdf
- https://gamedunyasi.com/calisma2/files/uploads/71604649355.pdf
- http://www.kreasoft.mx/wp-content/plugins/formcraft/file-upload/server/content/files/16084e18904ba2---sutiletomoxewapizuxizujo.pdf
- https://badoza.net/userfiles/file/40269420268.pdf
- http://extrastyle.ee/ckfinder/userfiles/files/61679360742.pdf
- http://bsa.by/ckfinder/userfiles/files/87487421631.pdf
- https://amagi.la/wp-content/plugins/formcraft/file-upload/server/content/files/1607416d8d9cee---suzilatirijajeluveg.pdf
- https://leicht-spb.ru/wp-content/plugins/super-forms/uploads/php/files/947ad72611c4a6be0271cc480b9fd793/37368544606.pdf
- http://tragiaocolamsapa.com/userfiles/image/file/11117143290.pdf
- http://fitviewer.de/files/file/89449271208.pdf
- http://www.redactordecontenidos.eu/wp-content/plugins/formcraft/file-upload/server/content/files/160a8c6a285579---bigegofetegelakif.pdf
- https://noks.cz/wp-content/plugins/formcraft/file-upload/server/content/files/1608cd6fbea301---10380385778.pdf
- http://ajtoablakcentrum.com/_user/file/subeba.pdf
- https://dentinale.eu/wp-content/plugins/super-forms/uploads/php/files/96d13de30bb5544a5682002e53b795bc/bobizujajufasexu.pdf
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/BvfzZFkJO3s/uplcv?utm_term=one+minute+manager+summary+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_off000152b1.binfcf07951605d4ba6dc60651241e4fd5305774d0443c158fff4fdd7feccb56821 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x152B1 | 10912 bytes |
font_01_sfnt_off00016bcc.binbd8256517d1779ec075721756f9c719a10a19a0ecaeb817cda088a7e2f5c551a |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x16BCC | 18180 bytes |
font_02_sfnt_off00019b34.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x19B34 | 16792 bytes |
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