MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1204.002 Malicious Link
The file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. Heuristics identified it as a link farm, with numerous URLs pointing to compromised WordPress sites and disposable hosting, suggesting a phishing or malware distribution scheme. The document body was unreadable, but the presence of many external URIs and the 'PDF_SEO_DISPOSABLE_LINK_FARM' heuristic strongly indicate the document's purpose is to redirect users to potentially harmful external sites.
Machine Learning
- Nyx PDF Classifier malicious score 0.9981
Heuristics 6
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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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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=column+subtraction+worksheet+generator PDF link annotation
- http://lawcab.ru/wp-content/plugins/formcraft/file-upload/server/content/files/1607611559d177---momewasopololezorilok.pdfIn PDF document text
- https://syntellect.ru/Repository/file/80014818252.pdfIn PDF document text
- http://adanateknikservis.web.tr/wp-content/plugins/formcraft/file-upload/server/content/files/160bfeef09fbf0---bimolomigitawexufikiruful.pdfIn PDF document text
- https://tonymusic.se/UserFiles/files/zebejasomesuz.pdfIn PDF document text
- https://nazragame.com/calisma2/files/uploads/53486554429.pdfIn PDF document text
- http://yomamasushitogo.com/uploads/files/soketibuninipuxibogutinu.pdfIn PDF document text
- http://design-klasse.de/ckfinder/userfiles/files/36479338618.pdfIn PDF document text
- https://vidolamerica.org/wp-content/plugins/super-forms/uploads/php/files/65f3170de41b83066591951f88b0c77d/66313479359.pdfIn PDF document text
- https://grafconsulting.pl/Upload/file/duxujaxumod.pdfIn PDF document text
- http://www.pianoszimmermann.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/16075f6079bfad---ponifoxafexukupu.pdfIn PDF document text
- http://neoneofitou.com/ckfinder/userfiles/files/ditavovugalisosenawigef.pdfIn PDF document text
- https://www.lamuccacompany.com/wp-content/plugins/super-forms/uploads/php/files/9616d5db1af14ffaf02e352889d016f6/magas.pdfIn PDF document text
- http://www.masozilina.sk/ckfinder/userfiles/files/67256791773.pdfIn PDF document text
- http://immopolignano.lu/images/zivedonaj.pdfIn PDF document text
- http://juha.be/_files/file/tekalikajixugezemekonata.pdfIn PDF document text
- https://www.lenoir-elec.com/wp-content/plugins/super-forms/uploads/php/files/qt0omc39h22np9pl0ajh0pd0h5/zogubisegebavoritexoje.pdfIn PDF document text
- http://theydeserveastamp.org/wp-content/plugins/formcraft/file-upload/server/content/files/1610e00166592f---43252847372.pdfIn PDF document text
- http://erictex.com/ufiles/files/25451077578.pdfIn PDF document text
- https://cuacuonbentre.com/upload/files/98304227902.pdfIn PDF document text
- https://spencershaulageltd.co.uk/wp-content/plugins/super-forms/uploads/php/files/cc64e582ce23d3ed349bd4269b0e5faa/68639774535.pdfIn PDF document text
- https://rajatotogroup3.com/contents//files/mogegux.pdfIn PDF document text
- https://cursosgratuitosonline.es/wp-content/plugins/super-forms/uploads/php/files/d55o2krmr50urgchhgvlij1883/58859092045.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_off0000d04c.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD04C | 17676 bytes |
SHA-256: 5e89ae71022dbc5f179de1f09c8c2caf51a0d0b6c1916fbfe96558efa7d1c05c |
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font_01_sfnt_off0000fd5c.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xFD5C | 11128 bytes |
SHA-256: 914932f70ec1ccd4e88777370a3178fde704b4009d357b9a52efa86e01857c1c |
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font_02_sfnt_off00011742.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11742 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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