MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The sample was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains numerous links, many pointing to compromised WordPress upload directories and disposable hosting, suggesting a link farm designed to redirect users. The PDF's structure and the presence of external URI heuristics strongly suggest it's used as a lure to external, potentially malicious, content.
Machine Learning
- Nyx PDF Classifier malicious score 0.9966
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 http://lamekatus.ee/uploads/ckeditor/files/xopugo.pdf
- https://alkalacarservice.com/public_html/userfiles/file/kixewaretutusu.pdf
- https://www.birdandwildlifeteam.com/wp-content/plugins/formcraft/file-upload/server/content/files/16076a8e646967---53815972462.pdf
- http://russkiivopros.com/images/FCKeditor/file/80501120004.pdf
- https://www.straightmyteeth.eu/wp-content/plugins/super-forms/uploads/php/files/58dde635431eff937b0b1a65b86d7d05/98273806914.pdf
- https://plumcourse.com/wp-content/plugins/super-forms/uploads/php/files/875a2ab640bff53f887b6ca54ee6c264/1276497993.pdf
- https://glasschneider.koeln/wp-content/plugins/super-forms/uploads/php/files/c8fk216ma2n9uib9gh367p1kqs/5836341999.pdf
- https://www.freshstartdigitalmarketing.com/wp-content/plugins/super-forms/uploads/php/files/d5fd7ad0ac4cc342cb8bdaa9a0ea2964/mugiwu.pdf
- https://www.elementstraining.co.uk/wp-content/plugins/super-forms/uploads/php/files/9raa2k13pptj1petee0nec7a7f/77640972589.pdf
- https://infoenergie-loire.org/userfiles/file/wisenakamefilekawegin.pdf
- http://baaningdoi.com/file_media/file_image/file/18359578873.pdf
- http://kaufdeinauto.de/wp-content/plugins/formcraft/file-upload/server/content/files/160862a5831a8a---7347885905.pdf
- http://modelkyujin.com/wp-content/plugins/formcraft/file-upload/server/content/files/160722c16ebc95---45274675788.pdf
- https://www.tessilgiada.it/wp-content/plugins/formcraft/file-upload/server/content/files/16088df9e88b17---xubala.pdf
- https://www.colegiodesafio.net/home/wp-content/plugins/formcraft/file-upload/server/content/files/160e8f10245157---sixetidodawuxepazagumel.pdf
- https://member-amz-seller-system.de/wp-content/plugins/super-forms/uploads/php/files/fe1ddb1c0d0e6a2473edeff6e29f0a10/3267189910.pdf
- https://cailux.lu/userfiles/files/22205071133.pdf
- http://dh-life.com/ckfinder/userfiles/files/32888805453.pdf
- http://xn--dlek-5qa.com/admin/UserFiles/file/41836444386.pdf
- http://tikatalog.sk/_files/file/52950765249.pdf
- https://feedproxy.google.com/~r/Uplcv/~3/3vuEKuznOb8/uplcv?utm_term=fever+after+chickenpox+vaccine
- http://lovewhereyoulv.wpengine.com/wp-content/plugins/super-forms/uploads/php/files/671b0c67ebb0ebd437b54339282569da/mamagopuriwoxibom.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_off0001004e.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1004E | 16792 bytes |
font_01_sfnt_off00011865.binffbf0e298c271dbd758a5103f9d046a445112c3c82cceb9da20bb3656e7ee878 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11865 | 10600 bytes |
font_02_sfnt_off0001308e.bin4d14c6fe871bd34b0b16a6085618d994faa075656c5496a8a189f4e6de94d8a1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1308E | 17432 bytes |
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