MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. Heuristics reveal it functions as a link farm, directing users to multiple compromised WordPress upload sites and other disposable hosting domains. The embedded URLs, such as 'https://crysiq.ru/uplcv?utm_term=katy+kaylee+libros+pdf', likely serve as lures for phishing or to download further malicious content.
Machine Learning
- Nyx PDF Classifier malicious score 0.9956
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://crysiq.ru/uplcv?utm_term=katy+kaylee+libros+pdf PDF link annotation
- http://lilit-realty.com/wp-content/plugins/super-forms/uploads/php/files/76vk05vf1tgebd703rsp6uqor7/jigujememinatafedix.pdfIn PDF document text
- http://namlinhchivietnam.net/userfiles/image/file/xifavefelivuvavuvajapekol.pdfIn PDF document text
- http://fvv-hohenfelde.de/sites/default/files/files/93138943260.pdfIn PDF document text
- http://baovecongtruong.com/upload/files/meruratigab.pdfIn PDF document text
- http://gocep.org/data/userfiles/files/4061790450.pdfIn PDF document text
- https://sieuviet.net/webroot/img/files/96312756803.pdfIn PDF document text
- http://zdravi-kromeriz.cz/files/file/52638912899.pdfIn PDF document text
- http://nb-magnet.com/upload/files/15453959730.pdfIn PDF document text
- https://icbacademy.com/upload/files/92077862190.pdfIn PDF document text
- http://sola-brothers.com/userfiles/file/94375248790.pdfIn PDF document text
- http://devison-matras.ru/upload/file/fitema.pdfIn PDF document text
- http://cloudinfo01.smartevolve.com/images/ckeditor/files/lizadumerewodaloro.pdfIn PDF document text
- http://interstroy96.ru/uploads/files/15700682887.pdfIn PDF document text
- http://nanumed.ro/uploads/files/lisisezuwesigatidejim.pdfIn PDF document text
- https://digireg.cn/upload/riliferibopajoxukifo.pdfIn PDF document text
- https://www.totalblissbeauty.com.au/application/third_party/ckfinder/userfiles/files/9612742375.pdfIn PDF document text
- http://minuspk.ru/minuspk.ru/userfiles/file/93961767883.pdfIn PDF document text
- http://bugskin.org/userfiles/file/begojaluravobemuwakovipeb.pdfIn PDF document text
- https://www.artikel238.nl/emmwebbit/resources/ckfinder/userfiles/files/zenojonedatasimetot.pdfIn PDF document text
- http://royalgroup.at/tmp/gupiginirovaxapofogunera.pdfIn PDF document text
- http://www.americaninvest.net/upls/files/fetijopolaja.pdfIn PDF document text
- http://ar-intl.net/wp-content/plugins/super-forms/uploads/php/files/jgc2nidtf8puhjdk6i4h713qh0/xipadudib.pdfIn PDF document text
- http://totalfinance.ca/wp-content/plugins/formcraft/file-upload/server/content/files/161483d487b551---xodusalewajunipexefawu.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_off0000b254.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xB254 | 17812 bytes |
SHA-256: 8a70a71f7cd03e6bf470c181dd9d4a3ebe7db6396663882455ebbf0273d142cf |
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font_01_sfnt_off0000df72.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDF72 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_02_sfnt_off0000f789.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF789 | 10724 bytes |
SHA-256: 1b2c5282ffbf8b940929253d745559c429f2a801ce24a99b4b6f23047be4ea54 |
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