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. It functions as a link farm, directing users to multiple external URLs hosted on potentially compromised websites, which is a common tactic for phishing or malware distribution. The presence of numerous links and the use of 'utm_term' parameters suggest an attempt to track user engagement or disguise the malicious nature of the links.
Machine Learning
- Nyx PDF Classifier malicious score 0.9949
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://synerhu.ru/uplcv?utm_term=joint+pain+and+fatigue+in+adults PDF link annotation
- https://apparel.allianceflooring.net/wp-content/plugins/super-forms/uploads/php/files/33636051d38c16e4732b5d23930bea7a/83105807772.pdfIn PDF document text
- https://www.audifonosdoshoydos.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609765ee0c046---sutomavumesevimozodevew.pdfIn PDF document text
- http://burchiellati.com/file_fck/file/60716344326.pdfIn PDF document text
- http://handbook.hu/upload/page/file/getag.pdfIn PDF document text
- https://cesiedizioni.com/userfiles/file/40234503724.pdfIn PDF document text
- https://louvre.lv/res/wysiwyg/file/32952729332.pdfIn PDF document text
- http://fresh-j.info/images/uploadedimages/file/wudetabafunareg.pdfIn PDF document text
- http://www.korayozelguvenlik.com/wp-content/plugins/formcraft/file-upload/server/content/files/16096014786a0f---53923899687.pdfIn PDF document text
- https://blackknowledge.com/wp-content/plugins/super-forms/uploads/php/files/6dfd1c3c68e7cb20aee8fc68e8eb5357/xulenilevamotefinibatipub.pdfIn PDF document text
- http://brightwayconsultancyservices.com/userfiles/file/66473293443.pdfIn PDF document text
- https://gservicepz.com/wp-content/plugins/super-forms/uploads/php/files/7af73503bfe9427ff8ae6b2ae638632a/tesesutituvemaxezufuk.pdfIn PDF document text
- http://alimentosldm.com/userfiles/file/pokawafozojepemazowabuli.pdfIn PDF document text
- http://latexindia.com/userfiles/file/26887542956.pdfIn PDF document text
- http://alfonsoguiggiarchitetto.it/userfiles/files/84336224191.pdfIn PDF document text
- https://amagi.la/wp-content/plugins/formcraft/file-upload/server/content/files/160bf58aa48189---31552754279.pdfIn PDF document text
- http://vibrosystem.ro/wp-content/plugins/formcraft/file-upload/server/content/files/16095a7e38dc67---49120412829.pdfIn PDF document text
- http://www.jesuseslaroca.org/wp-content/plugins/formcraft/file-upload/server/content/files/16070c6710683e---78991947201.pdfIn PDF document text
- https://fo-prefectures.com/pages/files/fegexarabasiwufevazida.pdfIn PDF document text
- http://viaterrestre.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1609433f6a17f0---37814303228.pdfIn PDF document text
- http://www.unidacardoso.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/16072d329cbf82---xixalobepaxesepejomuzuna.pdfIn PDF document text
- http://www.itbaloch.com/wp-content/plugins/formcraft/file-upload/server/content/files/16079275aac6e8---56701888601.pdfIn PDF document text
- https://www.reliancecareuk.com/wp-content/plugins/super-forms/uploads/php/files/04d7cdd39fd6f62eefddb94dc5b9c79e/33135620363.pdfIn PDF document text
- http://bularz-auto.pl/images/userfiles/file/dedefa.pdfIn PDF document text
- https://pensiuneavlasin.ro/wp-content/plugins/super-forms/uploads/php/files/4lf9b16s7409lu58df7tuut2ui/16515288794.pdfIn PDF document text
- https://www.financedeclined.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/1606c9d90685f7---vewenujamemubuvur.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_off0000deec.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDEEC | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_01_sfnt_off0000f6fe.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF6FE | 16392 bytes |
SHA-256: 473f002f7ede08d182e1917353bee5aa58b0c8e65af9f8cc5c6ad7c7e9df75e9 |
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font_02_sfnt_off00012161.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x12161 | 10664 bytes |
SHA-256: a0b5467cff00f485e2550cdff711f46f3ed9b457eeed7d7107a6571847a811b6 |
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