MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The heuristics indicate it functions as a link farm, directing users to multiple compromised WordPress upload storage locations and disposable hosting sites. The embedded URLs, such as 'https://catamma.ru/uplcv?utm_term=29.5+divided+by+2', are likely used to redirect users to phishing pages or download further malicious content.
Machine Learning
- Nyx PDF Classifier malicious score 0.9936
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://catamma.ru/uplcv?utm_term=29.5+divided+by+2
- http://constructionone.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160a5a506b9618---batuzutefizitomezufefa.pdf
- https://f1com.ge/wp-content/plugins/super-forms/uploads/php/files/a8f60f16cf5d9c8b42bd086f955f58d7/muxuzalagajafiwoz.pdf
- http://www.jcca.co.in/wp-content/plugins/formcraft/file-upload/server/content/files/160bc6f8a3db22---gitediramevegi.pdf
- http://alemotta.com/resources/original/file/juwuwezazotekef.pdf
- http://bellezaeimagen.com.mx/wp-content/plugins/formcraft/file-upload/server/content/files/160bbed505cfb1---sewibiriz.pdf
- https://searchlink.org/userfiles//file/lakixowujoziwuzem.pdf
- https://suemsas.com/wp-content/plugins/super-forms/uploads/php/files/stdlj1p8q9sbirg84a01eg8jv7/gevomet.pdf
- http://birkhoffhi.com/userfiles/files/51884223882.pdf
- http://premiumresourcing.com/wp-content/plugins/formcraft/file-upload/server/content/files/160769568a6f87---bilakunim.pdf
- http://geology.ie/wp-content/plugins/formcraft/file-upload/server/content/files/160d862765ee3e---65173377983.pdf
- https://journeywithmypet.com/ckfinder/userfiles/files/nibodowej.pdf
- https://tarzminder.com/resimler/files/kulitozalazaxemakuvutanu.pdf
- https://songhong.info/userfiles/file/71645212602.pdf
- http://unibeauty.com.br/ckfinder/userfiles/files/zofujujun.pdf
- http://structurecreative.com/wp-content/plugins/formcraft/file-upload/server/content/files/160cca7b98ecc2---xugasepoduzefimibi.pdf
- http://afghansolar.com/userfiles/file/fojulikomef.pdf
- http://www.fliesen-brill.de/wp-content/plugins/formcraft/file-upload/server/content/files/160830dc193303---rusega.pdf
- https://ethiquedevelopers.com/wp-content/plugins/super-forms/uploads/php/files/7ba47294e05063cc8e12c531c255a975/lagabetazasi.pdf
- http://urbanconstructions.org/images/uploadedimages/file/kivez.pdf
- https://dialogueinpraxis.net/files/docs/safapolegobudivarelasixe.pdf
- https://digireg.nz/upload/63118530061.pdf
- https://siam-royal-view.ru/data/files/wawebumoluvuk.pdf
- http://www.hkwebdesign.com.hk/wp-content/plugins/formcraft/file-upload/server/content/files/1607995bcbc477---78985599189.pdf
- http://lideparts.com/userfiles/file/1622230560.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_off000115e6.bin8632c9e1517a28a3449261b58639560b29412145c29809f5f4186d672f81e7e8 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x115E6 | 10156 bytes |
font_01_sfnt_off00012cc8.bin010ff38f8d3fa98949c65d46d21283d920f7b4851077992d3750f4e4191be35a |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x12CC8 | 17368 bytes |
font_02_sfnt_off00015a75.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x15A75 | 16792 bytes |
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