MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF contains numerous links to external websites, many of which are hosted on compromised WordPress sites or disposable domains, suggesting a link farm designed to distribute malicious files. The ML classifier and ClamAV detection strongly indicate malicious intent. The presence of embedded URLs and the nature of the heuristics point towards a phishing or malware distribution scheme, likely using a spearphishing attachment as the initial vector.
Machine Learning
- Nyx PDF Classifier malicious score 0.9985
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://catamma.ru/uplcv?utm_term=download+aplikasi+lagu+dj PDF link annotation
- http://lawngo.net/fckfiles/bagixodedakavopajukotufe.pdfIn PDF document text
- http://sjar-tech.com/uploadfile/file///2021090322515820.pdfIn PDF document text
- https://semangkamerah.com/contents/files/texejotigexovediwexu.pdfIn PDF document text
- http://www.hollyskauaicondo.com/wp-content/plugins/formcraft/file-upload/server/content/files/161317e4124b5f---84310162902.pdfIn PDF document text
- http://szjglaw.com/uploadfile/file/2021090119155473499.pdfIn PDF document text
- https://akdenizokullari.k12.tr/wp-content/plugins/super-forms/uploads/php/files/n4ghkcfnf4e7rhg3v8s0ind4a2/39613027198.pdfIn PDF document text
- https://bohemiamaestro.com/webpagebuilder/ckfinder/userfiles/files/51467407429.pdfIn PDF document text
- https://zzwgjx.com/d/files/37570547869.pdfIn PDF document text
- https://shreenathtechnologies.com/userfiles/file/59335770842.pdfIn PDF document text
- https://lecourbe.dk/userfiles/file/zesuwifinijegivus.pdfIn PDF document text
- http://elpijisystem.com/file/wonipodezixito.pdfIn PDF document text
- http://izhar-energy.com/userfiles/file/rubujelibasujejamapu.pdfIn PDF document text
- http://www.nachtruhe.info/up/files/32608245052.pdfIn PDF document text
- https://kstraders.com/userfiles/file/vitidazakeluzejiza.pdfIn PDF document text
- http://kco.su/userfiles/file/majabegefiribabugetumu.pdfIn PDF document text
- https://yuvasarkar.org/userfiles/file/79069010077.pdfIn PDF document text
- http://noithatachau.vn/webroot/img/files/zobamugirasusamanukexugep.pdfIn PDF document text
- http://adabaskimerkezi.com/upload/file/73189921630.pdfIn PDF document text
- https://alihuata.com/userfiles/file/15818588464.pdfIn PDF document text
- https://yastudio.net/wp-content/plugins/super-forms/uploads/php/files/6632e2dd912bdb6bb734b85992ca7487/mikexim.pdfIn PDF document text
- https://simovi.mx/wp-content/plugins/formcraft/file-upload/server/content/files/16133f977a07a4---lafam.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_off0000d38f.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD38F | 10648 bytes |
SHA-256: 282f92d51db7ab82cb435978fce708e91c14e71ed2ffe7994050f98b2e3d7b31 |
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font_01_sfnt_off0000ebc1.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xEBC1 | 18472 bytes |
SHA-256: 74f2ba4be12b0ff671bb188b664223fbf211f6c4f175486f81d22be42bcfd87c |
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font_02_sfnt_off00011caa.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11CAA | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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