MALICIOUS
164
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The sample contains embedded JavaScript and multiple URLs, many of which point to compromised WordPress sites or disposable hosting, indicating a link farm designed to redirect users. The ClamAV detection and ML classifier strongly suggest malicious intent, likely phishing or malware delivery. The embedded JavaScript is a common method for initiating malicious actions within PDFs.
Machine Learning
- Nyx PDF Classifier malicious score 0.9976
Heuristics 7
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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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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://nadrozmerne-sklo.cz/uploads/madowitafibokozuwali.pdf
- http://2446665a.ru/ckfinder/userfiles/files/ganex.pdf
- http://studioarchoggianiepartners.it/userfiles/files/petivoxadevilugibino.pdf
- http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d22deba6a16---55291026824.pdf
- http://conganbacgiang.vn/app/webroot/uploads/files/82375792508.pdf
- http://cuanhomkinhtoanthang.com/media/file/85040381919.pdf
- http://thedewakohchang.com/image/upload/File/8382947159.pdf
- http://tipkeo.com/js/ckfinder/userfiles/files/90238750327.pdf
- https://feriaesotericadeatocha.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608093319b02c---35097247.pdf
- http://alumcity.ru/userfiles/file/89774628308.pdf
- https://resonanceacteurs.nl/userfiles/file/73485827762.pdf
- https://www.bouldersudbury.org/wp-content/plugins/formcraft/file-upload/server/content/files/16091a61576b5c---30663883896.pdf
- http://domeinbeverdonk.be/assets/files/file/18044770991.pdf
- https://turdv.ru/SITE/files/editor/file/kugabelosu.pdf
- http://www.pro9apps.com/app/webroot/files/uploadimagesfile/64200874855.pdf
- https://stewsites.com/wp-content/plugins/super-forms/uploads/php/files/9e963200559a97c1dcd6098fea94620f/30578423523.pdf
- http://www.knickmeier.net/images/pageimg/file/11576197166.pdf
- http://leap-egypt.com/wp-content/plugins/formcraft/file-upload/server/content/files/1612ffa10e314f---tokudiko.pdf
- http://ajk-opakowania.eu/upload/fck/file/rizapopimusojev.pdf
- http://growlink.biz/userfiles/file/27674617029.pdf
- http://bridgesonthepark.com/wp-content/plugins/formcraft/file-upload/server/content/files/160912bae07b15---fanedasefumav.pdf
- http://malagi.pl/user-files/fck/file/towevixumokiwil.pdf
- http://ohsclassof73.com/clients/9/9a/9a21b0b253f7c4eafe662346d237c286/File/33924246548.pdf
- https://feedproxy.google.com/~r/Uplcv/~3/cv9VXjIrmdE/uplcv?utm_term=scalanie+stron+pdf+online
- 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_off0000ec81.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xEC81 | 16792 bytes |
font_01_sfnt_off00010493.bincc986c2dadb1bf81d2e4ea5257dc461e85237597c61b1a899ca0378ebe3d510e |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10493 | 18484 bytes |
font_02_sfnt_off00013465.bin87f34bc8136bac6ac57d24fcc93394b3a2359c2903be89a45448e5dfd43ba9c1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x13465 | 10688 bytes |
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