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 websites or disposable hosting, indicating a link farm designed to redirect users. Heuristics like 'PDF_SEO_DISPOSABLE_LINK_FARM' and 'PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM' strongly suggest malicious intent, likely for phishing or malware delivery. The ML classifier and ClamAV detection further confirm its malicious nature.
Machine Learning
- Nyx PDF Classifier malicious score 0.9960
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/20210901191603.pdf In PDF document text
- http://tacchigroup.com/public/thread/risorse/file/11889954313.pdfIn PDF document text
- http://tiga.co.th/ckfinder/userfiles/files/83212806878.pdfIn PDF document text
- http://plusbateria.com/wp-content/plugins/formcraft/file-upload/server/content/files/16137a79fea80e---27197957681.pdfIn PDF document text
- http://aarogyamedico.com/userfiles/file/14707951551.pdfIn PDF document text
- https://vanrun-it.nl/userfiles/files/gigoxodomagobi.pdfIn PDF document text
- http://waetsukai.jp/system/ckfinder/userfiles/files/saderokozo.pdfIn PDF document text
- http://studiospazioambiente.it/userfiles/files/46254533632.pdfIn PDF document text
- https://empresa-venta.hr/files/12592189678.pdfIn PDF document text
- https://kirmatas.com/userfiles/file/fukotopijekodadipusotep.pdfIn PDF document text
- http://sevenseahotel.com/uploads/images/files/67511999181.pdfIn PDF document text
- https://liantoong.com/archive/upload/files/84117636563.pdfIn PDF document text
- http://trackeg.com/en/wp-content/plugins/formcraft/file-upload/server/content/files/16137d86121032---3794139905.pdfIn PDF document text
- http://yishiweb.com/upfiles/files/20210901_054856.pdfIn PDF document text
- https://callhfelectric.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613422b0009cb---wevezafokusupi.pdfIn PDF document text
- https://snowcat.pl/admin/ckfinder/userfiles/files/96927143956.pdfIn PDF document text
- http://geology.ie/wp-content/plugins/formcraft/file-upload/server/content/files/161394cefdf656---futubulobepogimezug.pdfIn PDF document text
- https://open-call.fr/uploaded/files/3215675507.pdfIn PDF document text
- http://besteva.com/upload/files/74706227416.pdfIn PDF document text
- http://messtores.ca/fck_user_files/file/gitijirazepanefudasu.pdfIn PDF document text
- http://hyundaihungthinh.com/uploads/images/files/50379431151.pdfIn PDF document text
- http://alvit-bk.ru/userfiles/file/9754997225.pdfIn PDF document text
- https://feedproxy.google.com/~r/skout/mBVl/~3/S30rS-6n6vg/uplcv?utm_term=vocalise+rachmaninoff+violin+pdfPDF link annotation
- https://tes-sys.com/uploads/ckfinder/files/20210909/16311439243283.pdfIn PDF document text
- 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_off0000d4f3.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD4F3 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_01_sfnt_off0000ed0a.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xED0A | 10824 bytes |
SHA-256: 5852ab2ad4f102cf444351577794a526ee08a0427ccb865b9842a9e7ccf00168 |
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font_02_sfnt_off000105cb.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x105CB | 18792 bytes |
SHA-256: 2345172caa5c04196ec2359ca7bbdb4a5b7e0d2636dda647c0d61080508a5073 |
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