MALICIOUS
164
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF contains embedded JavaScript and a significant number of external URIs, many of which point to compromised CMS uploads or disposable hosting, indicating a phishing or redirection scheme. The ML classifier and ClamAV detection strongly suggest malicious intent, likely to lure users to malicious sites via the link farm.
Machine Learning
- Nyx PDF Classifier malicious score 0.9912
Heuristics 7
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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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Embedded JS stream low PDF_JSPDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
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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://queure.ru/uplcv?utm_term=trust+device+android
- http://investbuild.ru/var/upload/file/xuraxefeno.pdf
- https://grupo-kayros.com/userfiles/file/lesaxuvedazewubozi.pdf
- https://kapokcmassage.com/uploads/files/202109160956463217.pdf
- http://www.aunay-sous-auneau.fr/ckfinder/userfiles/files/83742431228.pdf
- https://accesoriosalmayor.com/images/userfiles/file/lotiferadasevepitoge.pdf
- https://seedomoretravel.com/files/files/gawedusifemukavuvuv.pdf
- https://pielinks.com/UserFiles/file/40364020579.pdf
- http://adhunikjewellers.com/ckfinder/userfiles/files/lamawolitapolati.pdf
- http://scbczy.cn/up_files/file/20210905_231057.pdf
- http://unstitchedfootwear.net/files/file/nivumolur.pdf
- https://paloaltospeakerseries.com/wp-content/plugins/super-forms/uploads/php/files/fd5bed057d2f025c55b317091d13152f/24965047478.pdf
- http://traiteur-ribot.fr/userfiles/file/monatasenirurodusijuvif.pdf
- https://heritagelogs.com/wp-content/plugins/super-forms/uploads/php/files/i5f9ea346jfb86ed0k6vmmqb2c/82707999544.pdf
- http://npi-management.fr/ressource/site-image/files/menexokazojezujored.pdf
- https://izharfoster.com/wp-content/plugins/formcraft/file-upload/server/content/files/16138870c5f66e---pulolefod.pdf
- https://tierlistei.ch/downloads/88643873654.pdf
- http://sahamit.net/userfiles/file/69812624951.pdf
- http://chiari-web.com/ckfinder/optimist/files/19462085039.pdf
- http://rund.cz/UserFiles/File/momitexixodavifejafebeken.pdf
- http://www.aaar.cat/assets/js/ckfinder/userfiles/files/74465926489.pdf
- http://tungalag.mn/userfiles/files/84708926852.pdf
- http://nktrading.qa/file/files/xuvuvosofubewal.pdf
- http://le-bouquet.be/userfiles/files/6614263458.pdf
- https://www.taxiserviceh24.com/wp-content/plugins/formcraft/file-upload/server/content/files/16138460426dde---mavemudu.pdf
- https://reha.bg/content/upload/file/91886932343.pdf
- http://bilmatbasim.com/userfiles/file/13870409011.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_off0000e2f6.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE2F6 | 16792 bytes |
font_01_sfnt_off0000fb0d.binb8adfde4995c2d74464199f24b005bae126f6695de91dd904c656d0f9a6152d3 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xFB0D | 10444 bytes |
font_02_sfnt_off000112ec.binf3441c4fee4a2130311f3ca7a1777a3d8af94e375d4a8cd532506679aea3b9df |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x112EC | 17620 bytes |
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