MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1204.002 Malicious Link
The PDF contains a large number of embedded URLs, many of which point to compromised CMS upload directories or are hosted on disposable domains. This behavior is indicative of a link farm designed to manipulate search engine results or redirect users to malicious sites. The ML classifier and ClamAV detection strongly support a malicious classification, likely related to phishing or SEO spam.
Machine Learning
- Nyx PDF Classifier malicious score 0.9974
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://krisoc.ru/uplcv?utm_term=best+sites+to+watch+movies+online+free+quora PDF link annotation
- http://shreyaghoshal.com/konadnew/userfiles/file/95593915911.pdfIn PDF document text
- http://nnk.gr/wp-content/plugins/formcraft/file-upload/server/content/files/1609f046c38278---kajosawitejegeforukox.pdfIn PDF document text
- http://studiocastigli.eu/userfiles/files/manun.pdfIn PDF document text
- https://advancedbusiness.co/wp-content/plugins/super-forms/uploads/php/files/a3464074d4b5718a5f9d9da4d3c79295/45604048832.pdfIn PDF document text
- https://handinhand-daycare.com/ckfinder/userfiles/files/99964469741.pdfIn PDF document text
- http://ash-graphy.com/userfiles/file/82268517228.pdfIn PDF document text
- http://unicorn-furnitures.com/d/files/65205735788.pdfIn PDF document text
- http://hoondb.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607e7011649cf---nowimakekigopoketig.pdfIn PDF document text
- https://cosmeticdermatologymiamibeach.com/uploads/data/files/14011541270.pdfIn PDF document text
- https://happycustomerservice.com/wp-content/plugins/super-forms/uploads/php/files/818829db96b78114d616797736dc6a11/39376405191.pdfIn PDF document text
- http://www.canadiantreasurer.com/wp-content/plugins/formcraft/file-upload/server/content/files/16090ba74d9669---lalanefumosasiniza.pdfIn PDF document text
- http://overtonnation.com/clients/f/f9/f97855507a39dfa58978186db9bff07a/File/vuwofopaxajozilupogan.pdfIn PDF document text
- https://ka-base.no/images_content/file/jizevab.pdfIn PDF document text
- http://rent2day.ca/ci2/userfiles/files/3170181099.pdfIn PDF document text
- http://hillcresthigh1971.com/clients/9/9f/9fbf9047a6869172a982db6f42f05a9a/File/nopoxotijiririlewekuxadub.pdfIn PDF document text
- http://caribsplash.org/wp-content/plugins/formcraft/file-upload/server/content/files/16082f01f33ca2---42114106651.pdfIn PDF document text
- http://vdgairconditioning.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160bdab57ea19e---37050175445.pdfIn PDF document text
- http://co-wemart.com/careeruserfiles/file/kosikikafawani.pdfIn PDF document text
- https://lawpropertyconsultants.co.uk/wp-content/plugins/super-forms/uploads/php/files/9faa630smrucmmep6ha2co4hmn/lurotupibezabufumot.pdfIn PDF document text
- https://addsfly.com/userfiles/file/82775378721.pdfIn PDF document text
- http://botosani.ro/img/uploads/file/rodufedafodamomemoj.pdfIn PDF document text
- http://dalnoboy.org/data/filestorage/upload/files/70253417797.pdfIn PDF document text
- http://bizwd.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a41f44c2b52---tubemutagapizoloxukes.pdfIn PDF document text
- https://activepymes.com/pub/file/vabelowijidudenunuteni.pdfIn PDF document text
- http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
- http://purl.org/dc/elements/1.1/In PDF document text
- http://ns.adobe.com/pdf/1.3/In PDF document text
- http://ns.adobe.com/xap/1.0/In PDF document text
- http://ns.adobe.com/xap/1.0/mm/In PDF document text
- http://ns.adobe.com/xap/1.0/rights/In PDF document text
- http://dejavu.sourceforge.netIn PDF document text
- http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
Extracted artifacts 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000e5d5.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE5D5 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_01_sfnt_off0000fdec.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xFDEC | 11052 bytes |
SHA-256: 2b52e0f44b90bfaecb9729eca534f5f71c2ee62d793be3aedd6277992b2ec5a2 |
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font_02_sfnt_off00011798.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11798 | 16596 bytes |
SHA-256: d453b04de1bcc4cb2bf0ae807e880858db4b47c27836c0bb54576e74bf0f5622 |
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