MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
This PDF file was detected as malicious by ClamAV and an ML classifier. It contains numerous links, many pointing to compromised CMS uploads or disposable hosting, suggesting a link farm designed to redirect users to malicious content. The presence of embedded URLs and the nature of the heuristics indicate a phishing or malware distribution attempt, likely using a spearphishing attachment as the initial vector.
Machine Learning
- Nyx PDF Classifier malicious score 0.9973
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://laborke.ru/uplcv?utm_term=piano+sheet+music+river+flows+in+you+pdf
- https://elitestrategyglobal.com/wp-content/plugins/super-forms/uploads/php/files/2bc795f788439fc18f2461b98514cba8/mobefebipow.pdf
- https://agilitynd.com/wp-content/plugins/super-forms/uploads/php/files/04438864b77a1e0c828b62cdf350a3b0/57440044778.pdf
- http://www.flamanville-76.fr/upload/file/tikekinekakugurez.pdf
- https://myhoorayhealth.com/wp-content/plugins/super-forms/uploads/php/files/l9a5l66enimhcuasvdf04gee90/53475191375.pdf
- https://www.artikel238.nl/emmwebbit/resources/ckfinder/userfiles/files/27317113720.pdf
- http://ciskmv.com/css/file/jaxagalapezobapad.pdf
- https://healthcareadvisorsgroup.com/wp-content/plugins/super-forms/uploads/php/files/aq3h3sg5paof16ogcaod274i65/51596884228.pdf
- https://cepatdaftargroup2.com/contents//files/13460217196.pdf
- https://clubsecurite.fr/webroot/upload/files/28644160030.pdf
- http://simp-q.ru/userfiles/file/86536840611.pdf
- http://gistfamilyreunion.com/clients/8/8c/8cbf0a40baaab9dd4734ff2cdbb1e120/File/nabubogefiterigolulix.pdf
- http://vietthanhstone.com/images/news/file/vamumokunelodifudod.pdf
- https://tyko.pl/userfiles/file/58243121733.pdf
- http://peaceinsrilanka.lk/userfiles/file/42573831893.pdf
- http://studiolegalebisantis.it/userfiles/files/24093741429.pdf
- http://polskienarty.pl/data/aktualnosci_imgs/file/ditijedoxote.pdf
- https://equipelec.fr/ckfinder/userfiles/files/41853247200.pdf
- http://bjaimama.com/data/upload/2021/07/file/202107140635088837.pdf
- http://www.christinemartin.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160bd430f8c83a---2895104719.pdf
- http://temple.mo/userfiles/file/25341398627.pdf
- https://gsm.company/ckfinder/userfiles/files/xunerawuramirotizozet.pdf
- http://www.nandomoraes.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/16094a35451e3a---rusanatixafewigoroxo.pdf
- https://atphp.ch/userfiles/file/50437242803.pdf
- http://s250801404.onlinehome.fr/img/uploaded/file/zutozoruzikofewe.pdf
- http://www.w3.org/1999/02/22-rdf-syntax-ns#
- http://purl.org/dc/elements/1.1/
- http://ns.adobe.com/pdf/1.3/
- http://ns.adobe.com/xap/1.0/
- http://ns.adobe.com/xap/1.0/mm/
- http://ns.adobe.com/xap/1.0/rights/
- http://dejavu.sourceforge.net
- http://dejavu.sourceforge.net/wiki/index.php/License
Extracted artifacts 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000c2b8.bin94a4784fa0ec18f7acb768a41ddfbd11962be77173351df980a05293b87c48db |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xC2B8 | 17100 bytes |
font_01_sfnt_off0000ee8c.bincb8c05a5072796fd254772a03d7347f5a7482c7192519ac5cbaae15d554ab497 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xEE8C | 11252 bytes |
font_02_sfnt_off000108d3.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x108D3 | 16792 bytes |
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