MALICIOUS
164
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF contains embedded JavaScript and multiple external URIs, including links to compromised CMS uploads and disposable hosting, suggesting a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly indicate malicious intent, likely involving redirection to malicious sites via the embedded links.
Machine Learning
- Nyx PDF Classifier malicious score 0.9993
Heuristics 7
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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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Embedded JS stream low PDF_JSPDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
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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://chcial.ru/uplcv?utm_term=how+to+start+mac+in+recovery+mode PDF link annotation
- http://raduzhniy.com/wp-content/plugins/formcraft/file-upload/server/content/files/161456854b4e04---wosekexuralififuze.pdfIn PDF document text
- http://hophungvietnam.com/app/webroot/uploads/files/nesoladapax.pdfIn PDF document text
- https://cancelaria.pl/galeria/file/499379177.pdfIn PDF document text
- http://thecountryclub32055.com/userimages/19903236445.pdfIn PDF document text
- http://niezapominajkowo.eu/userfiles/file/99865523686.pdfIn PDF document text
- http://wasserentkalkung.at/ckfinder/userfiles/files/pizoxexokanosoxenikupo.pdfIn PDF document text
- http://sriagasthiyarastro.com/FCKeditor/userfiles/file/29810418983.pdfIn PDF document text
- https://bwawarszawa.pl/upload/file/nirosotesewe.pdfIn PDF document text
- http://7sate.com/filespath/files/20210910171156.pdfIn PDF document text
- http://ylpcl.com/ckfinder/userfiles/files/16252892717.pdfIn PDF document text
- http://greenbelt.abwingsmd.com/uploads/files/lilafunulideg.pdfIn PDF document text
- http://osullivanspressurewashing.com/wp-content/plugins/formcraft/file-upload/server/content/files/16140572e6d255---rikijogalev.pdfIn PDF document text
- http://bodegaadrover.com/userfiles/imagenes/pevetobetovopemaxajimab.pdfIn PDF document text
- http://geodeslaboratori.eu/userfiles/files/8693550232.pdfIn PDF document text
- https://aymexco.eu/ckfinder/userfiles/files/84766974147.pdfIn PDF document text
- http://mesotects.com/wp-content/plugins/formcraft/file-upload/server/content/files/16141d1ab01bde---gokajugovani.pdfIn PDF document text
- http://ozanatalan.com/iboard/includes/userfiles/files/xumif.pdfIn PDF document text
- https://lawtutors.co.uk/js/ckfinder/userfiles/files/76987270346.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_off0000d613.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD613 | 17064 bytes |
SHA-256: 24e0779223eb194bafbb990bcaf41a2e59d7c908c12ca8d74bc8d8941243a91a |
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font_01_sfnt_off0001016e.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1016E | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_02_sfnt_off00011985.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11985 | 10740 bytes |
SHA-256: 9d6e130fc515935186f31083a58ca52d6318a2cc6366c145cb1425cdfe0276d6 |
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