MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
This PDF file was detected as malicious by ClamAV and an ML classifier. It contains a link farm pointing to multiple distinct hosts, many of which appear to be compromised WordPress sites used for hosting PDF files. The primary URL, https://crewmak.ru/uplcv, suggests a redirection mechanism, likely to facilitate phishing or malware delivery. No scripts were extracted, but the presence of numerous external links and the overall structure indicate a malicious intent to lure users to external resources.
Machine Learning
- Nyx PDF Classifier malicious score 0.9964
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://crewmak.ru/uplcv?utm_term=how+to+get+spoiled+meat+fast+in+ark
- http://www.barankayalar.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/160add3bf5cdc7---66307915829.pdf
- http://aklond.com/UploadFilesfile///2021043001085170.pdf
- https://agrotehholding.ru/wp-content/plugins/super-forms/uploads/php/files/88a6ad0b259d4c1cd41aec1231006ae0/pitusivuwerakogotugipi.pdf
- http://robbinsfamilyhealthcare.com/clients/2/2c/2c787fa606fc56c3a3a24dfc5409695f/File/juwajubavu.pdf
- https://glowskincare.net/wp-content/plugins/super-forms/uploads/php/files/65a47114eb4183c445eeac1f3ae6d551/bixulizudo.pdf
- http://diagonal.org.ar/wp-content/plugins/formcraft/file-upload/server/content/files/160bc951078748---vowefapigubuxibizu.pdf
- http://www.holderit.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608b641cc146f---17692639389.pdf
- https://www.breastcancerfoundation.in/wp-content/plugins/super-forms/uploads/php/files/f4f6824da75374826d308f564a627083/63336983009.pdf
- https://www.tangelo.no/wp-content/plugins/formcraft/file-upload/server/content/files/1606f1008b075f---vetoxujutekabutanasatora.pdf
- http://for-rent-antwerp.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bfa0eaa4c2d---gigotofezotijox.pdf
- https://www.mclarenpress.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608ab8e74505e---16136627201.pdf
- http://www.victorian-manor.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/1609b643552915---27300724103.pdf
- https://rijst.nu/userfiles/file/biwesagijuxokolidum.pdf
- http://maekuangudomthara.com/ckfinder/userfiles/files/texinaki.pdf
- http://www.niziointerior.pl/upload/file/zefaweworefadajagizuvazow.pdf
- http://eltonltd.ru/sites/default/files/uploads/gekisevanidegoken.pdf
- http://kwik-it.ru/wp-content/plugins/formcraft/file-upload/server/content/files/16072d66eca83b---72124888623.pdf
- https://extremetour74.ru/wp-content/plugins/super-forms/uploads/php/files/a6743a5265bb9799da90f2d19c1ec0fb/54350717265.pdf
- https://glasschneider.koeln/wp-content/plugins/super-forms/uploads/php/files/u2m4qrqcskju366osvpchtvo1s/91157437184.pdf
- http://ahchala.com/img/file/61431201066.pdf
- https://www.sanier.pl/wp-content/plugins/super-forms/uploads/php/files/hfkjvh058jc9hti5hg2884sjl7/41595212755.pdf
- http://stroynerud-sm.ru/wp-content/plugins/formcraft/file-upload/server/content/files/160afa06b680c0---duxunezitav.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_off0000eb1e.bina24cd12adaf4b6574c52a518be114c779c4864fce6cc7b6944d2ce8b13c9f697 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xEB1E | 17088 bytes |
font_01_sfnt_off0001178c.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1178C | 16792 bytes |
font_02_sfnt_off00012fa3.bin3e38346154a6da18e37b9c65ff2ca136a87a334d42bc648772e7a03667667e09 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x12FA3 | 11008 bytes |
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