MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
This PDF file was identified as malicious by ML classifiers and ClamAV, indicating a phishing or trojan threat. It functions as a link farm, directing users to multiple external URLs, some of which are hosted on compromised WordPress sites. The presence of numerous links and the use of 'utm_term' parameters suggest an attempt to lure users with search engine optimization tactics, potentially leading them to download malware or engage in phishing activities.
Machine Learning
- Nyx PDF Classifier malicious score 0.9991
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://archism.ru/uplcv?utm_term=vn+video+editor+for+pc+windows+10 PDF link annotation
- https://sevsport.info/wp-content/plugins/super-forms/uploads/php/files/d673b6bc44bddc642d1eb8cf5844e292/50919151727.pdfIn PDF document text
- https://www.revistadefiesta.com/wp-content/plugins/formcraft/file-upload/server/content/files/161313481482ea---89774289707.pdfIn PDF document text
- http://www.roosprommenschenckelfoundation.nl/ckfinder/files/files/fizutolaxilazibajodiwajad.pdfIn PDF document text
- http://zpkprzemysl.pl/ckfinder/userfiles/files/61713848451.pdfIn PDF document text
- https://sharzh-ufa.ru/wp-content/plugins/super-forms/uploads/php/files/0d54d047b8c8176815c7c30d8193c84a/87147461171.pdfIn PDF document text
- http://thevisionkharj.com/userfiles/files/lelijeranatezabed.pdfIn PDF document text
- http://montpellier-businessplan.eu/mbp/upload/images/images/upload/ckfinder/penoluxijakoxeguxixoxi.pdfIn PDF document text
- https://mycocoa.org/images/upload/files/mosowupepugoxab.pdfIn PDF document text
- https://rubfila.in/files/file/xolamopefumi.pdfIn PDF document text
- https://comobrew.com/newsite/images/user_uploads/file/zijuxukuviwudaxajaguf.pdfIn PDF document text
- http://e-district.org/userfiles/file/24931314922.pdfIn PDF document text
- https://ariaparvaz.com/basefile/ariaparvazcom/files/47573467176.pdfIn PDF document text
- http://goldsunjsc.com/upload/files/lonuxujeligajetule.pdfIn PDF document text
- http://massvt.sk/editor_uploads/system/files/76131168278.pdfIn PDF document text
- http://www.injamal.es/nueva/ckfinder/userfiles/files/7485283038.pdfIn PDF document text
- http://around-sicily.net/userfiles/file/galogirizovonofarigajuf.pdfIn PDF document text
- http://sporteambiente.it/ckfinder/userfiles/files/41673848717.pdfIn PDF document text
- http://www.ez4parcel.net/upfile/files/2021/09/07/95340163541.pdfIn PDF document text
- https://sakesushimn.com/userfiles/files/jaxumozigipamado.pdfIn PDF document text
- https://plewmal-d.com/Uploads/files/fazimavuvu.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_off0000d865.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD865 | 17496 bytes |
SHA-256: e71cd627feb44f5f1aa55bcbb4121f2baeea6cdec5ce221cb424df4d2b672801 |
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font_01_sfnt_off000105d9.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x105D9 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_02_sfnt_off00011df0.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11DF0 | 10700 bytes |
SHA-256: 9a674534003d5e74656a16682a913bc6e01d8f74b428e345192cf0d1d6e268c4 |
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