MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1204.002 Malicious Link
The PDF contains a large number of links pointing to various websites, many of which are hosted on compromised WordPress installations or disposable domains. This behavior is characteristic of a link farm designed to distribute phishing content or lead users to malicious sites. The ML classifier and ClamAV detection strongly indicate malicious intent.
Machine Learning
- Nyx PDF Classifier malicious score 0.9840
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://ketchas.ru/uplcv?utm_term=difference+between+rough+and+smooth+endoplasmic+reticulum+class+9
- http://kashima.cc/userfiles/file/vadede.pdf
- https://www.isgs.org/wp-content/plugins/super-forms/uploads/php/files/486a0ff3a7c038fa6a7ff11b7bf28e94/1469789337.pdf
- https://wscnaturalhealings.com/wp-content/plugins/super-forms/uploads/php/files/065a30a985648cb9948b9d3ac3ebe74b/bavoritazafobonisutefukam.pdf
- https://www.heracles-hotel.eu/wp-content/plugins/super-forms/uploads/php/files/erlgb3cnatukgku1nm2bb1fd19/konojavugi.pdf
- http://iwish-cosmetics.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d32bee3da90---rupamenefobafulimuked.pdf
- https://www.dishdivvy.com/wp-content/plugins/super-forms/uploads/php/files/a0c23b95158a0e9b45bfd60db123aea5/31901529.pdf
- http://ccswcd.com/userfiles/file/jiwerawiwifuvuvege.pdf
- https://rhythmcprandfirstaid.com/wp-content/plugins/super-forms/uploads/php/files/7abfb70f909baa6ce251d6ac87d9dce7/40357376136.pdf
- https://apoiotelecom.com/imagens/img_fckeditor/file/43512868916.pdf
- http://ideviceplus.nl/app/webroot/files/userfiles/files/nebezidit.pdf
- http://xn--b1ahhafccpgkb2bxo.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/baae8e822936380cd068e21e582c4dcd/1533855496.pdf
- https://advancedcheckcashadvance.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607c9f0bcc0d8---vixogopaponof.pdf
- https://veritiesinstitute.com/wp-content/plugins/super-forms/uploads/php/files/78e2a28c447bc2777792797847040778/77108829622.pdf
- https://www.shopveriamici.com/wp-content/plugins/super-forms/uploads/php/files/0c95k68d8ib0pr9ns5jp92ltt1/xevabizugozopuzikiwujubog.pdf
- https://alphaveneers.co.uk/wp-content/plugins/super-forms/uploads/php/files/47c76c18145ed7ab9a3b7c7331fc9a23/dorusitivokugurage.pdf
- https://www.demetagras.com/wp-content/plugins/formcraft/file-upload/server/content/files/16076c6015e3af---18741875308.pdf
- https://www.haievent.com/wp-content/plugins/super-forms/uploads/php/files/mmpo9qidl5r0tcuue6mtc3ka6i/5031620849.pdf
- http://adoriantarla.ro/wp-content/plugins/formcraft/file-upload/server/content/files/1609dd47d312be---42966666789.pdf
- https://nowbali.co.id/wp-content/plugins/formcraft/file-upload/server/content/files/1609c6d0e62b6b---29655927102.pdf
- http://ahlhy.com/uploads/file/020803307115.pdf
- https://www.hed-endo.hr/wp-content/plugins/formcraft/file-upload/server/content/files/160aa2878aa997---kojofaj.pdf
- http://www.davidwoodpersonnel.com/wp-content/plugins/formcraft/file-upload/server/content/files/16088c2fa02979---mibam.pdf
- http://deurwater.com/wp-content/plugins/formcraft/file-upload/server/content/files/16090030b57179---kisuwilejuzikotiguni.pdf
- https://bikinibody.be/wp-content/plugins/super-forms/uploads/php/files/glbj4imn7dapvvfmoevp1qkebk/44937169607.pdf
- https://www.tangelo.no/wp-content/plugins/formcraft/file-upload/server/content/files/160881738e5d90---lofenefim.pdf
- https://naseeha.org/wp-content/plugins/super-forms/uploads/php/files/b5c51c142ee9d785591c49438b102dba/takabalometevetubasobibe.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_off0000c885.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xC885 | 16792 bytes |
font_01_sfnt_off0000e097.binef0ef81b401729c42ceaaef0d4147c15b99babb7c0b47ac9a27190f96c0aab77 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE097 | 16400 bytes |
font_02_sfnt_off00010b03.binc86cf5a01a6c078a44c4135e785a0a6dd15dab0cbe1832345bdd920c1191a2d0 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10B03 | 11560 bytes |
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