MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
This PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains numerous embedded URLs that form a link farm, directing users to potentially compromised websites. The presence of these links suggests a phishing or credential harvesting campaign, leveraging a common tactic of distributing malicious documents via spearphishing attachments.
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 https://irlanc.ru/uplcv?utm_term=6th+class+social+studies+textbook PDF link annotation
- http://krajinar.cz/soubory/files/98324901129.pdfIn PDF document text
- https://shinko-tw.com/UserFiles/file/bidojufipimozofepurilo.pdfIn PDF document text
- http://jafra-com.at/userfiles/file/boxitivodavoxadupuzep.pdfIn PDF document text
- http://polipadel.com/userfiles/file/27589685751.pdfIn PDF document text
- http://camdohungdung.com/upload/files/biwuxirulibanewifejuve.pdfIn PDF document text
- http://toyotarent.tw/FileData/ckfinder/files/20210907_2A61B1E50FE38929.pdfIn PDF document text
- http://knipia.com/userfiles/file/21700696444.pdfIn PDF document text
- https://playgametoday.ru/wp-content/plugins/super-forms/uploads/php/files/732f26913a3193c101cc604ab01263f1/besomokumusex.pdfIn PDF document text
- http://sriagasthiyarastro.com/FCKeditor/userfiles/file/19318897353.pdfIn PDF document text
- http://annamsaigonlaw.com/upload/files/49653327226.pdfIn PDF document text
- https://maidintown.co.uk/wp-content/plugins/super-forms/uploads/php/files/5bc1dfc653eed0f9354cf1860ce85199/zotaxeguzoweva.pdfIn PDF document text
- http://bndweb.nl/upload/files/fuzamovemazuvugutodapa.pdfIn PDF document text
- http://maturitni-ples.eu/UserFiles/File/20700544013.pdfIn PDF document text
- http://metamorfozyayincilik.com/userfiles/file/ruzunatepepaxetejeraboxor.pdfIn PDF document text
- http://lisaarkin.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/dabekixiziwazudumonaraw.pdfIn PDF document text
- https://intersensor.ro/v2011/Files/fck_upload/file/juzeribo.pdfIn PDF document text
- http://engroupe.ca/aym_image/files/73573948152.pdfIn PDF document text
- https://unovosti.tv/ckfinder/userfiles/files/fupejekama.pdfIn PDF document text
- https://www.rogierstoel.nl/wp-content/plugins/super-forms/uploads/php/files/1q7uo53itj4489c2ocr64rq67g/92514667257.pdfIn PDF document text
- https://securitydm.com/slicice/file/11608240984.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_off0000d7a5.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD7A5 | 17036 bytes |
SHA-256: 077a7d1d22ea5bf6cc043fd8d7d63ad306d0802ee2e6e491c309f5b830d462df |
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font_01_sfnt_off00010370.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10370 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_02_sfnt_off00011b87.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11B87 | 10768 bytes |
SHA-256: 65c64936358f93516723246e5463fea8ee37dc91a1f0fb45fde129a58bf8bba6 |
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