MALICIOUS
164
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The sample is a PDF file detected as malicious by ClamAV and an ML classifier. It contains embedded JavaScript and a large number of external URLs, many of which point to compromised WordPress sites or disposable hosting, suggesting a link farm or phishing lure. The presence of embedded JavaScript indicates potential for malicious actions, such as downloading further payloads or redirecting users to malicious sites.
Machine Learning
- Nyx PDF Classifier malicious score 0.9975
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://medvor.ru/uplcv?utm_term=eighteenth+amendment+act+2010+pdf
- http://www.benvenutialmare.com/wp-content/plugins/formcraft/file-upload/server/content/files/161346c4c36e75---vemofunomogikixifap.pdf
- https://csn-alliance.com/data/files/51332686380.pdf
- http://lsmtrontractor.com/upfiles/file/20210904035716.pdf
- https://gulertrafik.com/wp-content/plugins/super-forms/uploads/php/files/uof7irb0mkl1oel2qtpoi23vq2/rigoviluroza.pdf
- https://toocapen.com/files/79210899181.pdf
- http://teraval.cz/res/file/bepofuzulisi.pdf
- https://hopadive.cz/ckfinder/userfiles/files/vimosiluzujage.pdf
- http://nissanotogovap.net/uploads/images/files/nijapefaxezilefuvev.pdf
- http://gibisch.com/files/files/24236316200.pdf
- http://3wsystems.com/shipinc/userfiles/files/kidule.pdf
- http://ziepniekkalns.lv/wp-content/plugins/formcraft/file-upload/server/content/files/1612f94b42224c---xefavivegenubu.pdf
- http://gordostcrista.ru/userfiles/file/tafavenigupowilurubupet.pdf
- http://innovatepc.com/userfiles/file/sijizifogomelok.pdf
- https://vnjhanoi.com/upload/files/73643894023.pdf
- http://iccjsc.com/images/uploads/files/zugategunumefaduvepobofum.pdf
- https://dongcohonda.com/userfiles/file/99842484218.pdf
- http://druckmaschinenservice.com/uploads/fce/files/woroziwojilezipopuleto.pdf
- http://bright-mineral.com/uploadfile/file/2021090716584543.pdf
- http://federicozucchettiarchitetto.eu/userfiles/files/vomot.pdf
- http://nsdadventist.org/FCKData/file/66758740332.pdf
- http://mousike.it/img_ins/files/jibubi.pdf
- http://www.enjoyvaltellina.it/admin/ckfinder/userfiles/files/84547708997.pdf
- https://www.l-games.jp/js/ckfinder/userfiles/files/15876331474.pdf
- http://www.icareonline.net.au/ckfinder/icare/files/51727286599.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_off0000d62e.bin7b9450bfee48a86670261589df9550c541a6001f7fa895d156f631e60185d803 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD62E | 17420 bytes |
font_01_sfnt_off00010360.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10360 | 16792 bytes |
font_02_sfnt_off00011b77.bin19e486be2fcde2824233e6780759e5bc702d7fe8586037ba5b6bb64bce2aeceb |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11B77 | 10912 bytes |
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