MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1204.002 Malicious Link
The PDF file was identified as malicious by ML classifiers and ClamAV. It contains a link farm with numerous URLs pointing to potentially compromised websites, suggesting an attempt to redirect users to malicious content. The presence of multiple external URIs and link farm heuristics indicates a phishing or malware distribution attempt.
Machine Learning
- Nyx PDF Classifier malicious score 0.9981
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://controlcert.se/wp-content/plugins/formcraft/file-upload/server/content/files/1613baeab233c1---duzejanosivepolebu.pdf In PDF document text
- http://cuathepvangohaiduong.com/images/ckeditor/files/55083808796.pdfIn PDF document text
- http://ajej.pretty-match.com/upload/files/28234269017.pdfIn PDF document text
- https://www.chortho.co.uk/wp-content/plugins/super-forms/uploads/php/files/go6f0r8tr0v9cf0ct54qgeg0n0/71821004198.pdfIn PDF document text
- http://canshu.dlzj.net/upload/files/20210913000116786599.pdfIn PDF document text
- http://saharun.org/uploads/ckfinder/userfiles/files/91947274673.pdfIn PDF document text
- https://www.theknowledgeonline.com/files/lib/ckfinder/userfiles/files/wodufog.pdfIn PDF document text
- http://ahkjt.com/upfile/file/8276842360.pdfIn PDF document text
- http://alcantara.cz/data/file/sufijofimiza.pdfIn PDF document text
- http://etasystem.net/userfiles/files/82887022056.pdfIn PDF document text
- https://nomortiga.com/contents/files/mosibubetemef.pdfIn PDF document text
- http://namuvaldymas.lt/userfiles/file/3061744293.pdfIn PDF document text
- http://inciboya.com/resimler/site/files/posuxuvejamizaxivoba.pdfIn PDF document text
- http://www.deadclan.nl/wp-content/plugins/formcraft/file-upload/server/content/files/161398d15a2925---fezufose.pdfIn PDF document text
- http://tndgdemo2.com/ckfinder/userfiles/files/39862838373.pdfIn PDF document text
- https://aiwatopup.com/ckfinder/userfiles/files/67077346962.pdfIn PDF document text
- http://muabannhagiare.net/images/uploads/files/tuvijapufuboge.pdfIn PDF document text
- http://maimungkorn.com/UserFiles/file/vabuda.pdfIn PDF document text
- http://kennyre.com/wp-content/plugins/formcraft/file-upload/server/content/files/16131560208288---86331846906.pdfIn PDF document text
- http://internet-trade.eu/UserFiles/file/pikefeguz.pdfIn PDF document text
- http://lsphc.com/userfiles/file///42864783085.pdfIn PDF document text
- http://tahi.hu/ckfinder/userfiles/files/difar.pdfIn PDF document text
- https://feedproxy.google.com/~r/skout/mBVl/~3/FevRqgeaUVY/uplcv?utm_term=gymnopedie+no+1+sheet+music+pdfPDF link annotation
- 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_off0000cff1.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xCFF1 | 10884 bytes |
SHA-256: 72da9301a3b658f65b759cc4d905a6d9d6a5e8cecae375a042db22954db82a1a |
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font_01_sfnt_off0000e901.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE901 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_02_sfnt_off00010113.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10113 | 17188 bytes |
SHA-256: 1a3d22e2b81356c5c4116e9f2513a4dca9e8cc6dc601d74645738ba909d3637f |
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