MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The PDF was identified as malicious by ML classifiers and ClamAV, with heuristics indicating it functions as a link farm. Multiple URLs point to compromised CMS uploads, suggesting an attempt to distribute malicious content or redirect users to phishing sites. The document body is heavily obfuscated, preventing a clear understanding of its specific lure.
Machine Learning
- Nyx PDF Classifier malicious score 0.9982
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://www.unicodesystems.com/wp-content/plugins/super-forms/uploads/php/files/hdiigrrg4eal79ulhshupl80v7/8122572518.pdf In PDF document text
- http://davcpundri.com/css/file/mopapenaz.pdfIn PDF document text
- http://gezond-trakteren.nl/kasteel-doornenburg-img/bestandenfile/96080546086.pdfIn PDF document text
- https://www.hungarianassociation.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ee17063d7cc---jegewigedetujamumizumeneg.pdfIn PDF document text
- http://depcip.com/app/views/panel/ckfinder/userfiles/files/zizafojatogufojumiwivenex.pdfIn PDF document text
- https://zweiund40.com/wp-content/plugins/super-forms/uploads/php/files/c1rant23aspbs3kt4getjsgikr/50419098867.pdfIn PDF document text
- http://chagatea.ru/wp-content/plugins/super-forms/uploads/php/files/f3928cf030a5f4a540078b424e7b054f/gupexogofoxatupovi.pdfIn PDF document text
- https://tahitotfaluovodak.hu/ckfinder/userfiles/files/86991372985.pdfIn PDF document text
- https://www.thecandystoresudbury.com/wp-content/plugins/super-forms/uploads/php/files/nr8lup5a86s41d6qskq50bj46s/lexanivelumexerovetifiwo.pdfIn PDF document text
- http://kraljicabih.com/wp-content/plugins/formcraft/file-upload/server/content/files/160be0d1b6423f---sapexodagidebazodowamu.pdfIn PDF document text
- https://home-consult.lu/userfiles/files/82593429698.pdfIn PDF document text
- http://polymer-optix.de/userfiles/file/zesati.pdfIn PDF document text
- http://pahsclassof2005.com/clients/d/d6/d61c4c031b0f3af13d3e88110ef3a3e1/File/gogobaweviron.pdfIn PDF document text
- https://pinotcar.com/wp-content/plugins/super-forms/uploads/php/files/ae642d23546bc1476745cf5c2658463a/pekawemudubofezejosagil.pdfIn PDF document text
- https://sgdivorcelawyers.com/wp-content/plugins/super-forms/uploads/php/files/f8e28980b72181fd53d32e183acc93ed/48821054857.pdfIn PDF document text
- http://mebco.ru/images/file/64385180531.pdfIn PDF document text
- http://bhttourist.com/upload/fckimagesfile/kopabufavewibipeparajavik.pdfIn PDF document text
- http://skipjackpoke.com/ckfinder/userfiles/files/61400767395.pdfIn PDF document text
- http://tutaylamhet.com/storage/ckfinder/files/84322897349.pdfIn PDF document text
- https://gift-edu.ru/wp-content/plugins/super-forms/uploads/php/files/b75733729167979b33f484f9d21f93e6/jizal.pdfIn PDF document text
- https://www.arphplumbing.co.uk/wp-content/plugins/super-forms/uploads/php/files/nripb5cpsmfq1lgrq7i4uugq14/wosepozulisi.pdfIn PDF document text
- https://airbays.com/userfiles/file/80963620796.pdfIn PDF document text
- https://saraelv.no/wp-content/plugins/formcraft/file-upload/server/content/files/1606f33734cb33---zelidomifepif.pdfIn PDF document text
- http://sattamatkapatti.com/userfiles/file/fuxegunu.pdfIn PDF document text
- https://feedproxy.google.com/~r/skout/mBVl/~3/fzgW7-mxBc0/uplcv?utm_term=free+printable+bubble+answer+sheetsPDF 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_off0000f120.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF120 | 10532 bytes |
SHA-256: 91b917633764d6b3cd6e7c0edaf985f04fadc8136c2823d08e371e15882901f4 |
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font_01_sfnt_off000108d5.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x108D5 | 17712 bytes |
SHA-256: 791a406fc7c3d79a29a13d943d0cd063227c59c90ee4ed758b55537fa978a95b |
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font_02_sfnt_off000136de.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x136DE | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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