MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The file was detected by ClamAV as Pdf.Phishing.Trojan and flagged by an ML classifier, indicating malicious intent. It functions as a link farm, with numerous URLs pointing to compromised CMS uploads and disposable hosting, likely to distribute phishing content or second-stage malware. The PDF structure itself does not contain readable content, suggesting its primary purpose is to host these malicious links.
Machine Learning
- Nyx PDF Classifier malicious score 0.9947
Heuristics 6
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ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTIONClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
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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://fszhenjia.com/upfolder/e/files/20210626050510.pdf
- http://tmtechvn.com/webroot/img/files/8702448808.pdf
- http://worthingtonpark101.com/userimages/98218025576.pdf
- http://www.sunaryem.com.tr/wp-content/plugins/super-forms/uploads/php/files/ikophi20a981mke8vajjiv0vh6/zazezikopa.pdf
- http://cesishotel.lv/res/wysiwyg/file/vozobesaniroginog.pdf
- https://europeancustomtailor.com/wp-content/plugins/super-forms/uploads/php/files/08483f7a395dfde0417a97839a1d77b1/55633158702.pdf
- http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/16077a39ca648d---75458340655.pdf
- http://mulroyenvironmental.ie/userfiles/file/47937606430.pdf
- https://www.endthestigmacounselling.com/wp-content/plugins/super-forms/uploads/php/files/a8q8q8jffnpddms0t27prokeek/posejumuvutonaxupeseten.pdf
- https://goldenparadisestsimons.com/wp-content/plugins/super-forms/uploads/php/files/ea363edd8027f28ba1c3ac71afcb7c5d/88251601323.pdf
- http://reiki-roots.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/1606f5666c7c68---79162660149.pdf
- http://rufullthrottle.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608cf452cf68b---vopilorav.pdf
- https://cochleartudaskozpont.hu/files/83503453854.pdf
- http://oreade-breche.fr/userfiles/file/66266768466.pdf
- http://gleneaglehoa.org/images/file/fuzeb.pdf
- http://shmountaineering.co.uk/wp-content/plugins/super-forms/uploads/php/files/14jqn0isac2tgbpmje1vlm65u6/guxuvumawarulugi.pdf
- http://pansophers.com/wp-content/plugins/formcraft/file-upload/server/content/files/16071a2ee94619---dozedixijituv.pdf
- http://ipvoicenj.com/wp-content/plugins/formcraft/file-upload/server/content/files/16083605a9336f---jufaru.pdf
- https://hps-gruppe.com/wp-content/plugins/super-forms/uploads/php/files/8iqq8ms79ipjhocepspqb8umgt/73522246459.pdf
- https://kuechentreff-schmid.de/wp-content/plugins/super-forms/uploads/php/files/osbj2fslu9l4j53uu86n0nj7v8/6882099859.pdf
- http://qtjdb.com/UploadFile/2021/05/30/file/20210530_005917_169.pdf
- https://israelonthehouse.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609b8b28dbdd9---goxalibig.pdf
- http://jyotiacademicpress.org/uploads/file/44023821572.pdf
- http://www.yoko-ono.be/images/userfiles/file/karadowafil.pdf
- https://feedproxy.google.com/~r/skout/mBVl/~3/S30rS-6n6vg/uplcv?utm_term=can+i+merge+2+pdf+files+into+1
- 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_off0000ea68.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xEA68 | 16792 bytes |
font_01_sfnt_off0001027a.binb7c914db6b200344d8d7140cfd6bc60609fb25f469d51c1665e9b91abb8f607f |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1027A | 17288 bytes |
font_02_sfnt_off00012fb4.bind3ffecf049d2eaabef19919d596bea9ca463d105299bc6457b351bf8fb9440b2 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x12FB4 | 11044 bytes |
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