MALICIOUS
164
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF contains an embedded JavaScript stream and a large number of external URIs, many of which point to compromised WordPress upload directories or disposable hosting. These links are presented in a link farm pattern, suggesting an attempt to distribute malicious files or redirect users to phishing sites. The ML classifier and ClamAV detection strongly indicate malicious intent.
Machine Learning
- Nyx PDF Classifier malicious score 0.9990
Heuristics 7
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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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Embedded JS stream low PDF_JSPDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
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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 http://355353.ru/userfiles/file/53483910857.pdf In PDF document text
- http://coming-c.com/userfiles/file/29684634784.pdfIn PDF document text
- http://www.caribbeandentist.com/wp-content/plugins/formcraft/file-upload/server/content/files/161300e4435015---militemu.pdfIn PDF document text
- http://ctm.it/userfiles/file/9684128895.pdfIn PDF document text
- https://meritumptt.pl/dokumenty/file/2996063190.pdfIn PDF document text
- http://baharemadinah.com/wp-content/plugins/formcraft/file-upload/server/content/files/161408fd387b8a---44513494021.pdfIn PDF document text
- http://volvo-cars.jp/js/upload/files/10589307253.pdfIn PDF document text
- http://15881588.com/ckupload/files/xumiv.pdfIn PDF document text
- http://mrybalko.ru/files/wozedowegoberil.pdfIn PDF document text
- https://ruta.hu/ckfinder/userfiles/files/fifuveredog.pdfIn PDF document text
- http://structurecreative.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613e75bea0aad---sopobi.pdfIn PDF document text
- https://episcopiaoradiei.ro/files/32315567167.pdfIn PDF document text
- https://aljuboori.com/userfiles/files/firemalisa.pdfIn PDF document text
- http://dentalclinicbangalore.com/uploads/80942749726.pdfIn PDF document text
- http://citysoupsbellevue.com/uploads/files/bewibonatumujojimubu.pdfIn PDF document text
- https://filetorme.com/upload/files/wamowuleforonalorasejur.pdfIn PDF document text
- https://5ky13lu3-1251.com/contents/files/xojusazoled.pdfIn PDF document text
- http://seibyou-koujien.com/files/files/jozoxebabutitetegujul.pdfIn PDF document text
- http://luberoff.com/userfiles/file/63607280985.pdfIn PDF document text
- https://pasationtravellers.com/root/FCKeditor/file/90780442568.pdfIn PDF document text
- https://feedproxy.google.com/~r/skout/mBVl/~3/FevRqgeaUVY/uplcv?utm_term=playstation+5+apk+downloadPDF link annotation
- 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_off0000df8b.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDF8B | 10580 bytes |
SHA-256: 3a4636498f83df95067d4cf7756594e6563ebdadd6b77cb82d2368c31af343f1 |
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font_01_sfnt_off0000f7f7.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF7F7 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_02_sfnt_off00011009.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11009 | 18064 bytes |
SHA-256: cbec7c604728c1882a25fa49000298e94651e59dc77e9c6f90f2cd6536243376 |
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