MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1204.002 Malicious Link
The PDF file contains a large number of links, many of which point to compromised WordPress sites. The ML classifier and ClamAV detection strongly indicate maliciousness. The primary attack pattern observed is the use of a link farm to direct users to potentially malicious content hosted on compromised infrastructure.
Machine Learning
- Nyx PDF Classifier malicious score 0.9960
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://www.kiteschule-eckernfoerde.de/wp-content/plugins/formcraft/file-upload/server/content/files/1607ab80598e64---biputujifoxaj.pdf
- http://adhdadvisory.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a1f7cb51481---fokenozosokinozu.pdf
- http://altaprecision.com/userfiles/file/15874643111.pdf
- http://3duct.com/wp-content/plugins/formcraft/file-upload/server/content/files/160befc919f6ac---86457515180.pdf
- http://protech.com.ng/wp-content/plugins/formcraft/file-upload/server/content/files/1607b7ccb21052---90117761621.pdf
- http://www.aqsclimited.com/EditorImages/file/44384354385.pdf
- https://vashadvokat82.ru/wp-content/plugins/super-forms/uploads/php/files/bbf8c8bc0849eee9548991359604586c/jorawifujedubutomo.pdf
- https://suemsas.com/wp-content/plugins/super-forms/uploads/php/files/st3acs5tmpfaptlbo54d3ns252/nogukenigonatezedubagiz.pdf
- http://sarahscupcakery.com/wp-content/plugins/formcraft/file-upload/server/content/files/16071416be167e---lumuzutow.pdf
- http://954move.com/clients/4890/File/difetum.pdf
- http://careerhack.net/wp-content/plugins/formcraft/file-upload/server/content/files/1608b2f749a8d3---22800043205.pdf
- http://interwork.sk/userfiles/file/19494749174.pdf
- https://kassa-evotor.ru/wp-content/plugins/super-forms/uploads/php/files/n45iaiqmdu4a7j7ehpbp6f13c2/nezaretig.pdf
- http://famcareconnect.org/wp-content/plugins/formcraft/file-upload/server/content/files/16088974604a48---91505225876.pdf
- http://www.191seo.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bc4fc1f1c53---67577886921.pdf
- http://endustriyelkiralama.com/wp-content/plugins/super-forms/uploads/php/files/1ecvssb7ablulhdju65hgovvhd/rubimiganeximifu.pdf
- https://jiptv.nl/wp-content/plugins/super-forms/uploads/php/files/5mrc3c4hbpf9us944qetiemru8/3558793574.pdf
- http://dahchen.tw/userfiles/file/zawukogip.pdf
- http://martom24.pl/martom/userfiles/file/dugafinotokafafujixe.pdf
- http://lucavolpicella.it/userfiles/files/290058198.pdf
- http://lapenya.cat/imgjovesnaves/file/gilotafugogetuvamezapa.pdf
- http://ohsclassof73.com/clients/9/9a/9a21b0b253f7c4eafe662346d237c286/File/93639523910.pdf
- http://ifaistos.reality.gr/~triantaf/images/file/97564802714.pdf
- https://feedproxy.google.com/~r/Uplcv/~3/GLLx1DTH0VQ/uplcv?utm_term=s+das+clinical+surgery+latest+edition+pdf
- http://www.w3.org/1999/02/22-rdf-syntax-ns#
- http://purl.org/dc/elements/1.1/
- http://ns.adobe.com/pdf/1.3/
- http://ns.adobe.com/xap/1.0/
- http://ns.adobe.com/xap/1.0/mm/
- http://ns.adobe.com/xap/1.0/rights/
- http://dejavu.sourceforge.net
- http://dejavu.sourceforge.net/wiki/index.php/License
Extracted artifacts 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000d5df.bin824384049a3272438506c7da6ced9e989b553ec8803d2b79f964cb8a92dc9319 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD5DF | 16952 bytes |
font_01_sfnt_off00010250.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10250 | 16792 bytes |
font_02_sfnt_off00011a67.binac49ccc1709137e16be05f1bec2a5de2646915bfe9c63567642700d491bf47a0 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11A67 | 11084 bytes |
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