MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The PDF contains numerous links pointing to compromised websites, as indicated by the 'PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM' and 'PDF_SEO_DISPOSABLE_LINK_FARM' heuristics. The ML classifier and ClamAV detection strongly suggest malicious intent. The embedded links likely serve as a lure to redirect users to malicious content, potentially for phishing or further malware delivery.
Machine Learning
- Nyx PDF Classifier malicious score 0.9984
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 http://wsystem.sk/userfiles/files/surube.pdf In PDF document text
- https://nichecnk.leaddeehub.com/userfiles/files/jawisotalovamefe.pdfIn PDF document text
- https://www.cocochan.com.pk/wp-content/plugins/super-forms/uploads/php/files/6e3b65c9abcb7ba4669bdaa2e1412878/10458323148.pdfIn PDF document text
- http://skup-laptopow.com/wp-content/plugins/formcraft/file-upload/server/content/files/16135711313645---38470547480.pdfIn PDF document text
- http://veraschwemmle.de/fckdata/file/47145091300.pdfIn PDF document text
- http://coimbra.hu/uploads/ckfinder/userfiles/files/puxixat.pdfIn PDF document text
- http://ownlines.com/upfiles/file/32224637017.pdfIn PDF document text
- http://happy-land.hu/editor_up/ramodavirufipupubavu.pdfIn PDF document text
- http://wwsm-us.com/files/file/79959203732.pdfIn PDF document text
- http://datacomsystems.cz/userfiles/file/tumosixijoginuvukoxalibe.pdfIn PDF document text
- https://ribaczpeter.hu/files/file/73925539287.pdfIn PDF document text
- https://greenboo.vn/uploads/files/dorufowinetupa.pdfIn PDF document text
- http://viviapalermo.com/userfiles/files/35835953068.pdfIn PDF document text
- https://kientrucqhouse.com/uploads/image/files/37436454586.pdfIn PDF document text
- http://keramann.ru/uploads/files/70894686764.pdfIn PDF document text
- https://harmony-lazienka.pl/Upload/file/getosipo.pdfIn PDF document text
- https://christianboudreau.com/wp-content/plugins/formcraft/file-upload/server/content/files/1612f460f3553f---55227532140.pdfIn PDF document text
- http://andrenickels.de/ckfinder/userfiles/files/83723776395.pdfIn PDF document text
- https://tyko.pl/userfiles/file/2452866710.pdfIn PDF document text
- https://nsstore.mx/ckeditor/ckfinder/archivossubidos/files/86480859684.pdfIn PDF document text
- https://loyallcanada.ca/editor_files/file/vejenizunik.pdfIn PDF document text
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/YTWXjIUwRh0/uplcv?utm_term=miui+launcher+poco+x3PDF link annotation
- 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_off0000d389.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD389 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_01_sfnt_off0000eb9b.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xEB9B | 14620 bytes |
SHA-256: 07f66be01951aef491b2ea03ceea9b393306114616c22e3beb4f4069d3542462 |
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font_02_sfnt_off0001107f.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1107F | 10572 bytes |
SHA-256: d4ba33c299ade822b3647a0550dac8cc7035668289fbc3ac5f7c530293118ee4 |
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