MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The heuristics reveal it functions as a link farm, with numerous URLs pointing to compromised CMS uploads and disposable hosting domains. These links likely serve as lures for phishing or to distribute further malware payloads.
Machine Learning
- Nyx PDF Classifier malicious score 0.9947
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://archism.ru/uplcv?utm_term=how+to+burn+1500+calories+in+a+day PDF link annotation
- http://happyhanool.com/ckupload/files/guzesido.pdfIn PDF document text
- https://him-home.ru/wp-content/plugins/super-forms/uploads/php/files/51d788fa20276e5fec0cd1a6f97bf883/tuxusiwupoduzonafabugagu.pdfIn PDF document text
- https://klingende-zeder.de/wp-content/plugins/formcraft/file-upload/server/content/files/1607b84d9b443d---zugizujokipegux.pdfIn PDF document text
- http://yds-wcv.jp/free_images/files/mavuwiziburozep.pdfIn PDF document text
- http://beiwendq.com/userfiles/file/luzudomixeki.pdfIn PDF document text
- https://xn--i1aam8cb.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/e72c357471397084dc7ba5aa3a6ae3f0/tekewinituzijumurivesiwix.pdfIn PDF document text
- https://bodegoncriollo.com/userfiles/file/6387393582.pdfIn PDF document text
- http://attlas.center/userfiles/file/23159729970.pdfIn PDF document text
- https://www.c2commercial.com/wp-content/plugins/super-forms/uploads/php/files/4d8b32866ac4bfb8873225cc9351dcc0/45738524991.pdfIn PDF document text
- http://primaneighbors.com/userimages/51537779083.pdfIn PDF document text
- http://saamfactory.com/wp-content/plugins/super-forms/uploads/php/files/225f9c7d1bf5c987c8befa8e8caa4d1a/75686894921.pdfIn PDF document text
- http://www.agrosystem.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/1608a43323207a---fagatamigesabuxi.pdfIn PDF document text
- https://law.com.sg/wp-content/plugins/super-forms/uploads/php/files/9201ee4b00ae2412f2c4b08a3c06caba/57486697945.pdfIn PDF document text
- http://soles2walk.cz/data/file/52255811507.pdfIn PDF document text
- http://www.virtualaid.eu/wp-content/plugins/formcraft/file-upload/server/content/files/160bfd66827fd1---5952810606.pdfIn PDF document text
- http://ildungrice.com/fileupload/fckeditor/file/bekutujusukir.pdfIn PDF document text
- https://gift-edu.ru/wp-content/plugins/super-forms/uploads/php/files/4c580f2494bb22290eacc72bd903ce2f/liketavevukalojunuwe.pdfIn PDF document text
- https://footballsod.com/images/ck-uploads/files/fukuleferijitasokoka.pdfIn PDF document text
- http://barrarioservicos.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1608e40bc168bb---20781541230.pdfIn PDF document text
- https://cambodiadriverservice.com/userfiles/file/nugizadexa.pdfIn PDF document text
- http://adhdadvisory.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608e8bf1eefa5---82780185792.pdfIn PDF document text
- http://www.pianoszimmermann.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160a2e1ef8325c---81952864485.pdfIn PDF document text
- http://milcontabil.com.br/wp-content/plugins/super-forms/uploads/php/files/bd3aurimssplmfnkd5kveu18q5/95649306959.pdfIn PDF document text
- http://www.northeastmarquees.com/wp-content/plugins/super-forms/uploads/php/files/46d15ea945c9e6645419f161d28b7bed/fovuvimuxunenigi.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_off0000f9ce.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF9CE | 11100 bytes |
SHA-256: cfc8e71ee3cfae9a7699d982fb41d93b2dfff884a34c4a404ddf291f91613dc1 |
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font_01_sfnt_off000113f0.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x113F0 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_02_sfnt_off00012c02.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x12C02 | 16936 bytes |
SHA-256: f2921e3c890b27edb0d82790b17959b0b6d0f625f1323b9ae7c2d5f9b01c2f56 |
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