MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The PDF contains numerous embedded URLs, many of which point to compromised CMS upload directories, suggesting a phishing or malware distribution scheme. The ML classifier and ClamAV detection strongly indicate malicious intent. The document body is heavily obfuscated and unreadable, but the heuristics and URLs point to a link farm designed to redirect users to potentially malicious content.
Machine Learning
- Nyx PDF Classifier malicious score 0.9991
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://automsystem.com/UploadFile/file/20210730075020094.pdf In PDF document text
- http://counterreaction.net/wp-content/plugins/formcraft/file-upload/server/content/files/1608da3169dd9a---gibekeziwetixikodafabiji.pdfIn PDF document text
- https://immo-macedo.lu/userfiles/files/xusegin.pdfIn PDF document text
- https://www.lesson-online.org/wp-content/plugins/super-forms/uploads/php/files/ffvv677hpi2n73rfcqpc9f2051/44667933042.pdfIn PDF document text
- http://es-umzuege-transporte.de/wp-content/plugins/super-forms/uploads/php/files/2112dde473c8ebbc724abd2ca28c9d3a/xalufek.pdfIn PDF document text
- https://sipsib.ru/wp-content/plugins/super-forms/uploads/php/files/71c87d592cbc240ec5c367f4d8ee9473/jisoviniwafonibagubi.pdfIn PDF document text
- https://www.sevgiliyevideo.net/wp-content/plugins/formcraft/file-upload/server/content/files/160bffe5cbdf69---69017584154.pdfIn PDF document text
- http://gingerwooddesign.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609006289a292---4884173330.pdfIn PDF document text
- https://nceptionsolutions.com/wp-content/plugins/super-forms/uploads/php/files/5d18a0656c3ad9a6c0f9cdc9f6905200/66246847322.pdfIn PDF document text
- http://synagoge-stommeln.de/ckfinder/userfiles/files/rezagiputadanimutagirav.pdfIn PDF document text
- http://ttc-investco.com/img/files/39512955143.pdfIn PDF document text
- https://nobleanimalsanctuary.org/wp-content/plugins/super-forms/uploads/php/files/tmp/safujojujajoxegaderodejav.pdfIn PDF document text
- http://www.deewanalarab.com/up_imgs/bevelunofujevodev.pdfIn PDF document text
- http://unipell.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1607386723d365---dalogepuvubiwub.pdfIn PDF document text
- http://www.gametimecatering.com/wp-content/plugins/formcraft/file-upload/server/content/files/160e18ca9dfb9b---76628861118.pdfIn PDF document text
- http://gongotour.com/FileData/ckfinder/files/20210811_AB2B38EB61614146.pdfIn PDF document text
- http://leebyunghun.kr/new/upload/board/files/ravugiwepobufidalujil.pdfIn PDF document text
- https://harpethvalleyhealth.com/wp-content/plugins/super-forms/uploads/php/files/8a4b9bfb4c872d22fb0ac5d8f326cd62/jojoxuvotogagowejij.pdfIn PDF document text
- https://hyundaia.ru/userfiles/file/26644158209.pdfIn PDF document text
- http://www.hcc-cpas.com/siteuploads/editorimg/file/jijuv.pdfIn PDF document text
- https://conexus-study-abroad-travel.com/ckfinder/userfiles/file/23473786703.pdfIn PDF document text
- http://poongdung.com/FileData/ckfinder/files/20210803_0A18C8D507BA74AB.pdfIn PDF document text
- https://comobrew.com/newsite/images/user_uploads/file/6309836245.pdfIn PDF document text
- https://feedproxy.google.com/~r/skout/mBVl/~3/3CAf4wW3hvY/uplcv?utm_term=ejercicios+tercer+condicional+ingl%C3%A9s+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_off0000dd0a.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDD0A | 11060 bytes |
SHA-256: 25d0f5343cfdf8cf7ab20a6430aef4191eca108e9c97613c67403d442431dce9 |
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font_01_sfnt_off0000f653.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF653 | 18304 bytes |
SHA-256: 01a7bced5cebb2958ea1850361886b8b5a57ea26921527d4e660d93b92a87f66 |
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font_02_sfnt_off0001254c.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1254C | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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