MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF file was flagged by multiple heuristics as malicious, including a ClamAV detection for 'Pdf.Phishing.Trojan'. It contains numerous embedded URLs, many of which point to compromised WordPress sites or disposable hosting, suggesting a link farm designed to redirect users to malicious content. The ML classifier also strongly indicated maliciousness.
Machine Learning
- Nyx PDF Classifier malicious score 0.9987
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://crewmak.ru/uplcv?utm_term=solving+a+system+of+linear+equations+in+two+variables
- https://abicecream.ru/ckfinder/userfiles/files/ketonidi.pdf
- https://yourtuscanyguide.com/wp-content/plugins/super-forms/uploads/php/files/6034e4s5dansa6vuqs7ikv0up0/gugevetowafide.pdf
- http://www.hj-bouwt.be/wp-content/plugins/formcraft/file-upload/server/content/files/16128bec06eb00---burevasa.pdf
- https://akemi.ro/hirek/file/73314008889.pdf
- http://gemculture.com/userfiles/file/fewiwimagelagizajemata.pdf
- https://eldorado777.ro/upload/editor/file/27713694777.pdf
- https://sentinels.ro/userfiles/file/vegibekagenimilafetum.pdf
- https://cherrychile.cl/cherry/uploads/contenido/files/19752821912.pdf
- https://responsible-tourism-alliance.com/content_file/files/vanulozenujawopujovinufok.pdf
- http://ledson.ru/upload_picture/74964786257.pdf
- https://drmiamiconnect.com/wp-content/plugins/super-forms/uploads/php/files/5c5a3ec715dcdcf56af0a4c6c15828e7/nugenobaragevine.pdf
- http://smartcookieacademy.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bea0dd08e94---puniv.pdf
- http://www.magicapro.it/wp-content/plugins/formcraft/file-upload/server/content/files/1608bcf23e370f---busagiturapenewagup.pdf
- http://akbmodel.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d7a1bdd05d1---juxekepadakal.pdf
- https://krimgranit.ru/wp-content/plugins/super-forms/uploads/php/files/cd9318f0a33593b18644066cc867d334/90942320648.pdf
- http://arcadia6465.com/clients/f/fc/fcac8d81e62e7f23ed02b02243def538/File/vanesiku.pdf
- https://him-home.ru/wp-content/plugins/super-forms/uploads/php/files/02f9453b21c1f582acd64f5ebb63622a/80741527418.pdf
- https://www.gml.de/wp-content/plugins/formcraft/file-upload/server/content/files/161268bce1d584---18176651048.pdf
- https://www.gsccn.it/wp-content/plugins/formcraft/file-upload/server/content/files/1612757c7bc893---nibefunedabi.pdf
- http://vdgairconditioning.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160796290d6251---tuwidovivuzajigerepirokix.pdf
- http://www.stemcellhairclinic.com/files/files/fizalazut.pdf
- http://files.ibiza-ferien.de/file/repozovova.pdf
- https://inchirierielicopter.ro/wp-content/plugins/formcraft/file-upload/server/content/files/160bb5f0d0c580---sasumuz.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_off0000ee61.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xEE61 | 16792 bytes |
font_01_sfnt_off00010678.bin2133806c75663dc37e48d89a098cf5fafad736b66e5c30bca529048c3efdf4da |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10678 | 11284 bytes |
font_02_sfnt_off000120bc.binc1d2f302931a84352db3e3de0d8842506f854b69a45f902d45a354d7e3bb2a7f |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x120BC | 18136 bytes |
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