MALICIOUS
164
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The PDF was flagged by a machine learning classifier and ClamAV as malicious, indicating it likely exploits a vulnerability or contains malicious content. The presence of numerous links to potentially compromised CMS upload storage and disposable hosting suggests a phishing or malware distribution attempt. The document body is heavily obfuscated, preventing a clear understanding of its specific lure, but the heuristics indicate a download or call-to-action prompt.
Machine Learning
- Nyx PDF Classifier malicious score 0.9974
Heuristics 7
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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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Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTONDocument contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
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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://bikeid.net/ckfinder/userfiles/files/pafilofina.pdf In PDF document text
- http://gshosnab.ru/userfiles/file/89240987343.pdfIn PDF document text
- https://sip7.pl/autoinstalator/sip7.online/wp-content/plugins/super-forms/uploads/php/files/bd5269ed4f4f1ee05206463065fc4e14/vivefefeku.pdfIn PDF document text
- https://prosperitas.be/data/assets/file/8576243371.pdfIn PDF document text
- http://foto-klub.dk/userfiles/file/nagavinilovux.pdfIn PDF document text
- https://nidi.mk/ckfinder/userfiles/files/tekepegor.pdfIn PDF document text
- https://joyfool.art/wp-content/plugins/super-forms/uploads/php/files/bec32fb3e1b3d9b47b487890aa079437/46250321915.pdfIn PDF document text
- http://bonfiremadigan.com/uploads/fckeditor/file/niwisowosajidirosupegu.pdfIn PDF document text
- https://alphaveneers.co.uk/wp-content/plugins/super-forms/uploads/php/files/47acedc5c2b7bd05ec1d77addda9acb2/fidixezivo.pdfIn PDF document text
- http://chicohigh1987.com/clients/47015/File/limorewimukuri.pdfIn PDF document text
- http://aunay-sous-auneau.fr/ckfinder/userfiles/files/naduniwuze.pdfIn PDF document text
- http://wypelnienia.kratex.pl/wp-content/plugins/super-forms/uploads/php/files/726ad50f8dd1f1f150556b2f4eca58d8/legisoja.pdfIn PDF document text
- http://thebellingerfamily.com/clients/0/05/05034faaa501c69409a7459485cba135/File/56612910576.pdfIn PDF document text
- https://alllegaltask.com/wp-content/plugins/super-forms/uploads/php/files/qlkc695ebrlt5b7ififr3ng1vs/dawejofe.pdfIn PDF document text
- https://wonwon.taipei/photo/file/zobefebovunoli.pdfIn PDF document text
- https://nuevocoach.co.uk/wp-content/plugins/super-forms/uploads/php/files/acaac3e8394fa47a9f849b08c1a368b4/xovusimetuviki.pdfIn PDF document text
- https://www.auditek.fr/wp-content/plugins/formcraft/file-upload/server/content/files/160c1a2af5feb3---geginuxopuxitiwaw.pdfIn PDF document text
- http://artikos.pl/userfiles/file/kagaradafaxijixuludenuro.pdfIn PDF document text
- https://www.nestroots.com/wp-content/plugins/super-forms/uploads/php/files/kchkt3d1bs7k98klb13u2vbr16/zapigerupitofiteb.pdfIn PDF document text
- https://fundreamz.com/ckfinder/userfiles/files/59017911225.pdfIn PDF document text
- https://vatlieutaphu.com/upload/files/39441303662.pdfIn PDF document text
- https://forthepeoplegov.com/userfiles/file/firili.pdfIn PDF document text
- https://www.liftechforklifts.com.au/application/third_party/ckfinder/userfiles/files/24414650579.pdfIn PDF document text
- https://businesslife.com/content/files/joduderilezifivol.pdfIn PDF document text
- https://feedproxy.google.com/~r/Uplcv/~3/1KS0DP0cxss/uplcv?utm_term=reasoning+alphanumeric+series+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_off0000dd8c.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDD8C | 19140 bytes |
SHA-256: 17f2b41676b01eca166dc46fde46b02a90d0468eb38ad31ac815c6f1d0c072d7 |
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font_01_sfnt_off00011067.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11067 | 11112 bytes |
SHA-256: ceb84ed02be0c2d15495d3ebd84946c9cb82365cb40bfdc09e68a6aebb7fc96a |
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font_02_sfnt_off000129dc.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x129DC | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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