MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF contains a large number of embedded links, many pointing to compromised WordPress sites and disposable hosting, indicating a link farm designed to redirect users to malicious content. The ClamAV detection and ML classifier strongly suggest this PDF is malicious, likely serving as a phishing lure or a distribution point for further malware. No scripts were extracted, but the extensive use of external links is the primary attack vector.
Machine Learning
- Nyx PDF Classifier malicious score 0.9975
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://catamma.ru/uplcv?utm_term=c+or+k+spelling+rule+worksheets+pdf
- https://www.picmephotoboothhire.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/16079a83a84419---73596418249.pdf
- http://www.monts.sk/upload_images/file/65132964066.pdf
- https://condominiovillage.com/userfiles/file/xirubeben.pdf
- https://law.myvzl.com/wp-content/plugins/super-forms/uploads/php/files/a4atmt7kml460fbk4739kp15dg/xodirogamazugu.pdf
- http://lucavolpicella.it/userfiles/files/52904642168.pdf
- http://asja-doll.ru/userfiles/file/15474948338.pdf
- http://womensmentalhealthmd.com/clients/9/9a/9a9ccad1be43d50cbc9928f06550b956/File/92875986816.pdf
- http://hellnocancershow.com/wp-content/plugins/formcraft/file-upload/server/content/files/1611990a487e01---27626414191.pdf
- http://solar-makernavi.com/ckfinder/userfiles/files/fuxinejibiduxipakofapupel.pdf
- https://gbagencement.fr/uploads/file/48009663157.pdf
- https://pilotcenter.gr/wp-content/plugins/super-forms/uploads/php/files/o0ol19bp3d9g7fhinabq4521qn/90859142682.pdf
- http://aliancegroup.su/wp-content/plugins/formcraft/file-upload/server/content/files/16074ac453bc12---10030728099.pdf
- http://xn--b1ahhafccpgkb2bxo.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/0e1c9aecf65b5eafe103e6d3f7402682/20260698829.pdf
- https://holcom-wd.com/webroot/img/files/lurex.pdf
- http://cmi.nfe.go.th/ckfinder/userfiles/files/88568646380.pdf
- https://www.taxiserviceh24.com/wp-content/plugins/formcraft/file-upload/server/content/files/160890fe6a5cf6---vawukom.pdf
- http://transgusto.ch/userfiles/file/48649995193.pdf
- http://kingsfinancialconsulting.com/userfiles/file/77692253411.pdf
- http://www.holzbau-hoelzl.at/wp-content/plugins/formcraft/file-upload/server/content/files/16071888812194---27660351418.pdf
- https://ymy-tea.tw/upload/files/somubitovazogikawanezap.pdf
- http://www.elsecretodelolivo.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608610b910b77---297487120.pdf
- http://nw-line.ru/generic/uploaded/meredudeninawol.pdf
- http://birzebbugastpetersfc.com/files/file/31643461155.pdf
- https://ecableapp.com/FCKeditor/FCKimgUpload/file/88484789107.pdf
- http://lynhuagiasi.com/Images_upload/files/wijoxamesej.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_off0000da22.binbc3aa56dfed03446fc9db272eb663e59253308b891d8a65413fe674ef512ee7c |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDA22 | 10924 bytes |
font_01_sfnt_off0000f340.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF340 | 16792 bytes |
font_02_sfnt_off00010b52.bind6330449f0c35e9831e912f7fa3e06a20d4f5730ac5f407b8807eab384c55f1a |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10B52 | 17384 bytes |
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