MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The sample is a PDF document identified as malicious by ML classifiers and ClamAV. It contains a link farm pointing to multiple compromised WordPress sites, suggesting an attempt to redirect users to malicious content. The presence of numerous external URIs and the 'link farm' heuristic indicate a likely phishing or malware distribution scheme.
Machine Learning
- Nyx PDF Classifier malicious score 0.9874
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://web-sila.ru/wp-content/plugins/super-forms/uploads/php/files/6541f7f29ec3ca94737240d722fd8496/64940389363.pdf
- http://www.skupp.pl/wp-content/plugins/formcraft/file-upload/server/content/files/16076bdc4243d3---45095319605.pdf
- https://fokusmedia.com/images/uploads/76862674749.pdf
- https://www.tessilgiada.it/wp-content/plugins/formcraft/file-upload/server/content/files/160c87a994e9a7---29031655509.pdf
- http://stopasbestos.ca/wp-content/plugins/formcraft/file-upload/server/content/files/16092e872a06b8---55340271622.pdf
- https://bykevin.com/wp-content/plugins/super-forms/uploads/php/files/4ef37e2c388376b573e959e25d8e5245/27852265772.pdf
- http://planet-for-events.de/userfiles/file/zobekotenebosarenexogib.pdf
- https://robinio.de/wp-content/plugins/super-forms/uploads/php/files/j63tijcglqad6sumgvr023pga5/87098716038.pdf
- http://www.hypnotiseur.com/wp-content/plugins/formcraft/file-upload/server/content/files/16081c76c8c2b2---69908941713.pdf
- https://elpmarketing.ca/wp-content/plugins/super-forms/uploads/php/files/dda729890d19f71a819d3642e5e0e32a/sisofimomarupiwatusel.pdf
- https://www.webhisto.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/160bc3053b4863---kiwal.pdf
- http://antifftech.com/uploadfile/file///2021051808595010.pdf
- http://www.mezmat.ru/ckfinder/userfiles/files/golonutigubaxa.pdf
- http://podlahypilat.cz/admin/file/malasokulaxogi.pdf
- https://accu-split.com/userfiles/files/xosidadekid.pdf
- https://deconkhoemanh.com/wp-content/plugins/super-forms/uploads/php/files/bbuhn130skad3joapnhvushfsg/pamaluw.pdf
- http://shinserviceodi.ru/wp-content/plugins/super-forms/uploads/php/files/d793bad7aa38c55895cc0af239d417fe/golejajuzuganas.pdf
- http://amako-ra.com/wp-content/plugins/super-forms/uploads/php/files/e7ff4b290d1e1f474c96e9c676094970/bametatonirixuti.pdf
- https://www.modianodesign.com/wp-content/plugins/formcraft/file-upload/server/content/files/160841d4674a45---bejepezasexazudofil.pdf
- https://bayardplaza.co.uk/wp-content/plugins/super-forms/uploads/php/files/lj397shvuu6f00jna8c3fhq5tc/wabomofadelopamej.pdf
- http://rolmech-strzelno.pl/Upload/file/98198387452.pdf
- https://otdelkamos.ru/wp-content/plugins/super-forms/uploads/php/files/3cf9d571424d55d74172c75198d63088/gomumexari.pdf
- http://akcjonariusz.com/UserFiles/file/79969128168.pdf
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/BvfzZFkJO3s/uplcv?utm_term=ncp+for+cholecystitis
- http://e1pl2.nazwa.pl/busy/fotki/file/zibete.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 4
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off000116ee.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x116EE | 16792 bytes |
font_01_sfnt_off00012f05.bin4fcc76fa3a7a526604757ce7e708e390b24d8e9d012abac6c65837f036b30170 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x12F05 | 10400 bytes |
font_02_sfnt_off000146b6.binfba03e17159b849ed43054f222c29e526701d9f3172312c7f9b3aa350a09c85c |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x146B6 | 17528 bytes |
font_03_sfnt_off000174a7.bin2f37ea1b11ece644fef2f420fc5d5e29c860255d372ec3a711666e2589675489 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x174A7 | 16204 bytes |
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