MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The PDF file was identified as malicious by ClamAV and an ML classifier, exhibiting characteristics of a link farm. Multiple heuristics indicate the presence of external URIs and links pointing to compromised CMS uploads and disposable hosting, suggesting a phishing or SEO poisoning attempt. The document body is heavily obfuscated and contains no readable content, preventing further analysis of its specific lure.
Machine Learning
- Nyx PDF Classifier malicious score 0.9947
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 https://cructi.ru/uplcv?utm_term=the+best+men%27s+haircut+for+your+face+shape PDF link annotation
- http://chukysovin.com/img-svc/files/60159096855.pdfIn PDF document text
- http://freestyler.cz/img/file/kijos.pdfIn PDF document text
- http://secondhandgraphics.com/usrfiles/file/zuzubagorifi.pdfIn PDF document text
- http://dirpub.org/editor/ckfinder/userfiles/files/guson.pdfIn PDF document text
- http://thayloilocnuoctaihanoi.net/upload/files/6829313655.pdfIn PDF document text
- http://bundoreh.com/fckeditor/files/file/4398695296.pdfIn PDF document text
- http://shanghaiqingchen.com/upload/files/tifulujatazutoruwe.pdfIn PDF document text
- http://gamjagolla.com/uploads/files/44359631519.pdfIn PDF document text
- http://pebyte.com/wp-content/plugins/super-forms/uploads/php/files/84a91vg0ema83bod1ral582brf/81770862178.pdfIn PDF document text
- https://eurotig.ro/file/gotufutexixifam.pdfIn PDF document text
- http://phutungquanghieu.com/app/webroot/files/ckfinder/files/18046427432.pdfIn PDF document text
- http://sooam.com/files/fckeditor/file/2101140484613f40333012b.pdfIn PDF document text
- http://omonetach.pl/foto/ilustracje/file/bajebazutilovatafusasi.pdfIn PDF document text
- https://almentispharma.com/ckfinder/userfiles/files/67007380709.pdfIn PDF document text
- http://meijialx.com/ckfinder/userfiles/files/nevaluzaripijif.pdfIn PDF document text
- https://lenaoyunlar.net/calisma2/files/uploads/jemafep.pdfIn PDF document text
- https://themodernla.com/wp-content/plugins/super-forms/uploads/php/files/7b2b32daa20fe0e08f8f7619cfa9828b/63589039053.pdfIn PDF document text
- http://swhwsolution.it/ckeditor-ckfinder-integration/uploads/files/lomax.pdfIn PDF document text
- http://onishi-kyosendo.jp/archive/mepodinibapop.pdfIn PDF document text
- https://queensflower.nl/clientfiles/51631840280.pdfIn PDF document text
- https://www.masismarketing.com/wp-content/plugins/super-forms/uploads/php/files/6b7910c2c0d8e392156f2b56da9eec67/wonexilikani.pdfIn PDF document text
- http://studiorapizza.it/userfiles/files/bevibaw.pdfIn PDF document text
- http://sun-green.be/ckfinder/userfiles/files/34662632560.pdfIn PDF document text
- https://sg-design.top/wp-content/plugins/super-forms/uploads/php/files/f801d1eb545a340e24dd6d005f8b2423/71076505075.pdfIn PDF document text
- https://www.lang-mayer.de/wp-content/plugins/formcraft/file-upload/server/content/files/161362e1e4b54f---3401399052.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_off0000c48d.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xC48D | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_01_sfnt_off0000dca4.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDCA4 | 11052 bytes |
SHA-256: 6741445bb01cce06fd42def7af823c07bd9ccdee589f7015e3690deb3f3a1fd3 |
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font_02_sfnt_off0000f611.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF611 | 16748 bytes |
SHA-256: 8076f57a7ec3177b1a320abab6493072d65f421a794a981068df791fb3292b07 |
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