MALICIOUS
164
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
This PDF file was detected as malicious by ClamAV and an ML classifier. It contains an embedded JavaScript stream and numerous external URIs that form a link farm, many hosted on compromised WordPress sites. These links likely serve as redirects to phishing or malware download pages, indicating a spearphishing attachment attack vector.
Machine Learning
- Nyx PDF Classifier malicious score 0.9984
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://synerhu.ru/uplcv?utm_term=best+keyboards+for+android+free PDF link annotation
- https://www.thecandystoresudbury.com/wp-content/plugins/super-forms/uploads/php/files/f6tg2m0mpn55p7b039gulkskse/43217694272.pdfIn PDF document text
- http://krindustria.com.br/site/wp-content/plugins/formcraft/file-upload/server/content/files/1613ffcfd8ad2d---75909684062.pdfIn PDF document text
- https://niagarablock.com/application/webroot/userfiles/file/89777850310.pdfIn PDF document text
- http://twilaw.com/files/files/tazowexirejo.pdfIn PDF document text
- http://kpdb.org/userfiles/files/mezasiribesafemagaviki.pdfIn PDF document text
- https://ketgate.eu/wp-content/plugins/super-forms/uploads/php/files/461b455e5da453372efa9cd3b212f3b0/tuzetisi.pdfIn PDF document text
- http://dominant.name/userfiles/file/92456662760.pdfIn PDF document text
- http://fsf-vastroad.com/userfiles/file/bufas.pdfIn PDF document text
- https://www.eecpowerindia.com/codelibrary/ckeditor/ckfinder/userfiles/files/45002653437.pdfIn PDF document text
- http://www.chinahkcarplate.com/wp-content/plugins/formcraft/file-upload/server/content/files/16132da2092447---34421010108.pdfIn PDF document text
- https://www.educazionesessuale-scuola.ch/ck/ckfinder/userfiles/files/76745736924.pdfIn PDF document text
- https://www.fishhabitatnetwork.com.au/application/third_party/ckfinder/userfiles/files/girudakilag.pdfIn PDF document text
- http://www.drop-lok.com/wp-content/plugins/formcraft/file-upload/server/content/files/1612ff7b632830---40820079311.pdfIn PDF document text
- http://coytex.net/ckfinder/userfiles/files/87114883821.pdfIn PDF document text
- http://www.ernakulamarchdiocese.org/www/js/ckfinder/userfiles/files/33281928317.pdfIn PDF document text
- http://ap116.ru/userfiles/file/zagewa.pdfIn PDF document text
- http://aroma-es.site/yamituki-n/uploads/files/60151573294.pdfIn PDF document text
- http://liqaa-lb.com/files/userfiles/files/38420788221.pdfIn PDF document text
- http://albarossa.jp/js/upload/files/64763759711.pdfIn PDF document text
- http://congluc.com/upload/files/danomujadaxawali.pdfIn PDF document text
- https://exlite.it/ckfinder/userfiles/files/fuwadala.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_off0000ca86.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xCA86 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_01_sfnt_off0000e29d.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE29D | 10700 bytes |
SHA-256: 523dd05477836d31024a0ed4963e1af9a2c01c2b283096b34b85645996b4368c |
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font_02_sfnt_off0000fb65.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xFB65 | 17336 bytes |
SHA-256: a1235c79610b3ce55587d5f63d8c3e24cdb000e0f0b84f238296ab73e85a4ae2 |
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