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 platforms or disposable hosting, indicating a link farm designed to distribute malicious content or phish users. The ML classifier and ClamAV detection strongly support its malicious nature. No scripts were extracted from this sample.
Machine Learning
- Nyx PDF Classifier malicious score 0.9942
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://synerhu.ru/uplcv?utm_term=rational+choice+theory+book+pdf PDF link annotation
- http://www.rotudavid.com/ckfinder/userfiles/files/nufeseredik.pdfIn PDF document text
- http://eichler-kammerer.de/48821403576.pdfIn PDF document text
- https://www.prowallpanama.com/wp-content/plugins/super-forms/uploads/php/files/abd38778aade12d072c90419fe176353/1646676077.pdfIn PDF document text
- http://langeline.com/ckeditor/upload/files/35096955303.pdfIn PDF document text
- http://tochuchoinghi.org/files/32540220998.pdfIn PDF document text
- https://jokerprod.net/userfiles/file/zavotifup.pdfIn PDF document text
- http://prodesign31.ru/wp-content/plugins/formcraft/file-upload/server/content/files/1608969981b573---4450669580.pdfIn PDF document text
- http://www.fullmooneye.com/wp-content/plugins/formcraft/file-upload/server/content/files/16098bd720872f---7634019058.pdfIn PDF document text
- https://nsck-cykelmotion.dk/userfiles/file/44456954111.pdfIn PDF document text
- http://lindendirect.com/ckfinder/userfiles/files/11679245210.pdfIn PDF document text
- http://www.blackhillsdancecentre.com/wp-content/plugins/formcraft/file-upload/server/content/files/16119aa5a04b5d---21531877632.pdfIn PDF document text
- http://thementalhealthadvocates.org/files/userfiles/file/nomozimosetemimar.pdfIn PDF document text
- http://toyotacri.com/userfiles/files/wexapusaxasip.pdfIn PDF document text
- http://weymouthhighschoolclassof62.com/clients/5/50/50fe23896e84432c97ff20d680692bb9/File/zumoduv.pdfIn PDF document text
- https://bluetact.com/ckfinder/userfiles/files/nipewonumaxilebeguji.pdfIn PDF document text
- http://indiebookoftheday.com/wp-content/plugins/formcraft/file-upload/server/content/files/16131fcf367087---38360400798.pdfIn PDF document text
- http://boxerdapolenta.com/cmsimple/images/file/78244237607.pdfIn PDF document text
- https://tirthmobile.com/wp-content/plugins/super-forms/uploads/php/files/5gniqj2s7p5lcsvbk0kf667btt/20802037169.pdfIn PDF document text
- http://marine-inox.com/i/File/kobijofadade.pdfIn PDF document text
- https://psychologgia.pl/Upload/file/56811474849.pdfIn PDF document text
- http://wedooverseas.com/userfiles/file/linirakekegitese.pdfIn PDF document text
- http://dothi.info/images/files/bemoweverekusebo.pdfIn PDF document text
- https://www.accidentinjurylascruces.com/wp-content/plugins/super-forms/uploads/php/files/kgg96pv3c2jmvu746kipr78e9b/gisuminu.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_off0000f9fd.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF9FD | 18688 bytes |
SHA-256: d96c2b42020d7306607d4288fdfc079f4710299fbe86ae1fef1ea8081b8efd53 |
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font_01_sfnt_off00012b52.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x12B52 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_02_sfnt_off00014369.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x14369 | 10940 bytes |
SHA-256: b2b612585b141e1812eda1b206c83f613b7baa7c356540f792aac83cebad118d |
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