MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The sample was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains numerous embedded URLs, many pointing to potentially compromised or disposable hosting, suggesting a link farm or phishing lure. The presence of PDF-specific heuristics like 'PDF_SEO_DISPOSABLE_LINK_FARM' and 'PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM' further supports this, indicating the PDF is used to distribute links to malicious content. No scripts were extracted, but the overall structure points to a phishing or malware distribution campaign.
Machine Learning
- Nyx PDF Classifier malicious score 0.9975
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://makinsushi.com/uploads/files/rufovavexekitulitajezozir.pdf In PDF document text
- https://ww150003.linebot.net/upfile/files/20210914142605.pdfIn PDF document text
- https://www.wemservice.com/ckfinder/userfiles/files/72445575449.pdfIn PDF document text
- http://mylodge-naoshima.com/images/blog/file/40330604752.pdfIn PDF document text
- http://kor-ra.ru/UserFiles/file/vaximejopinoger.pdfIn PDF document text
- https://filetorme.com/upload/files/31554594250.pdfIn PDF document text
- http://yuha.be/_files/file/30081748073.pdfIn PDF document text
- http://mosvag.ru/img/lib/file/62713441827.pdfIn PDF document text
- http://elenasteele.com/wp-content/plugins/formcraft/file-upload/server/content/files/16144aa2a4ed8b---gudewazufitojeba.pdfIn PDF document text
- http://tieulongcopro.com/luutru/files/86120839094.pdfIn PDF document text
- https://dermo.com/wp-content/plugins/formcraft/file-upload/server/content/files/161471053d94c0---77583690054.pdfIn PDF document text
- https://www.sblending.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/16134db137b7c6---59934930091.pdfIn PDF document text
- http://mrrb.nexgendevgroup.com/files/78407860226.pdfIn PDF document text
- https://kaparatt.com/images/File/51030195214.pdfIn PDF document text
- http://likuidart.com/files/ckeditor/files/16062156511.pdfIn PDF document text
- http://suchanekstomatolog.pl/files/file/67822421685.pdfIn PDF document text
- http://cuatro-pr.org/sites/default/files/file/gemimatolafixi.pdfIn PDF document text
- http://thietbianninh188.com/uploads/files/pirugivelewuxel.pdfIn PDF document text
- https://muzeumkonstancina.pl/attachments/file/kuduzog.pdfIn PDF document text
- http://iccjsc.vn/images/uploads/files/38319964073.pdfIn PDF document text
- https://mancomunidadvaldizarbe.com/userfiles/files/juvax.pdfIn PDF document text
- http://orchid-daikanyama.com/userfiles/file/29907341441.pdfIn PDF document text
- http://fskyok.com/uploadfile/files/72218948861.pdfIn PDF document text
- https://www.infratechgroep.nl/wp-content/plugins/super-forms/uploads/php/files/54acb66fb9871c0fa0707f892f1bd4ef/terufikigoxobifovimejoxej.pdfIn PDF document text
- https://northwestconvention.cz/data/files/muligo.pdfIn PDF document text
- https://feedproxy.google.com/~r/Uplcv/~3/PmAiG5ZyT-k/uplcv?utm_term=bluesnarfing+tools+for+androidPDF 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_off0000d4f2.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD4F2 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_01_sfnt_off0000ed09.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xED09 | 10684 bytes |
SHA-256: ba0122fcb5dc3c96c3419746544e18113d1c9f539d983d6cf8c6fda28c57e583 |
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font_02_sfnt_off00010576.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10576 | 17044 bytes |
SHA-256: 4ff72f1fee495143d73d5945b1c3cfde43086667bb65913ccf20a5d38c0ac8be |
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