MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
This PDF file was flagged by multiple heuristics as malicious, including a critical ClamAV detection for phishing and a high ML score. The document contains numerous URLs, many pointing to compromised WordPress sites or disposable hosting, suggesting a link farm designed to redirect users to malicious content. The presence of PDF_SEO_DISPOSABLE_LINK_FARM and PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM heuristics indicates a deliberate effort to obscure the true destination or leverage compromised infrastructure. No scripts were extracted, but the overall structure and URL distribution strongly suggest a phishing or malware distribution lure.
Machine Learning
- Nyx PDF Classifier malicious score 0.9965
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://chcial.ru/uplcv?utm_term=hydraulic+turbines+pdf+files
- http://mbcasc.net/imgs/file/pujopatuniregejamemafe.pdf
- https://www.cr-sdc.org/wp-content/plugins/super-forms/uploads/php/files/029a28ea45319e698cfa311809e07ac3/92856257157.pdf
- http://nature-revive.org/files/file/fulaserasokolal.pdf
- http://zekidilektekstil.com/images_upload/files/96160358321.pdf
- http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/16095769bc5f57---18458270987.pdf
- https://zapcdn.space/web/img/podborky/files/rudixoxefa.pdf
- http://bjjiffy.com/upload/xedobinunadatuvapi.pdf
- http://paulbwatkinslaw.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/muwaxob.pdf
- http://say-international.eu/userfiles/file/sapis.pdf
- https://nidi.mk/ckfinder/userfiles/files/tawitu.pdf
- https://sidexsideaudio.com/wp-content/plugins/formcraft/file-upload/server/content/files/160be632743682---puximegikijizer.pdf
- https://yidinfo.net/wp-content/plugins/super-forms/uploads/php/files/kh78iavt72i6av34qguu34nc70/99165500195.pdf
- https://krimgranit.ru/wp-content/plugins/super-forms/uploads/php/files/017e23bd1fc9ee093529b58f2a67a418/75106387951.pdf
- https://hpx.com.ua/wp-content/plugins/super-forms/uploads/php/files/bcff9a74289cb156100d52f3e6a15d13/17085688649.pdf
- http://bsinteriordesigner.com/userfiles/files/kakiwubitibidojoji.pdf
- http://garderoba.sk/images/_file/sokubaja.pdf
- https://tranthachcaodanang.com/uploads/image/files/78594632383.pdf
- http://biaikatolikus.hu/files/file/faxigusegosobiwelur.pdf
- http://joshuadacosta.com/wp-content/plugins/formcraft/file-upload/server/content/files/160be69f0aa4f2---95578378795.pdf
- http://workprohealth.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608b22031a96b---juzilokudimikuguruxe.pdf
- http://texmet.pl/userimages/file/pugolof.pdf
- https://agrotehholding.ru/wp-content/plugins/super-forms/uploads/php/files/957499a2705b65a13c8d82ec76934598/77880701084.pdf
- http://gazosilikatnn.ru/uploads/files/5597870542.pdf
- http://vecsecity.info/editor_up/kexosatukube.pdf
- http://gdwtechnology.com/fckeditor/file/3820425839.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_off0000b0e6.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xB0E6 | 16792 bytes |
font_01_sfnt_off0000c8f8.bin0afede35bc9333896534ef25714ffcebe198781d82ed69e22476bfa021819503 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xC8F8 | 15336 bytes |
font_02_sfnt_off0000efb4.bin3ea16b0969ca2ba1d37f1a7a4d1dd1a281f0f909f3035fc8139174fc7b34c8c4 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xEFB4 | 10840 bytes |
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