MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF contains numerous external links, many pointing to compromised CMS upload directories, suggesting a phishing or malware distribution scheme. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were directly extracted, the PDF structure and embedded URIs are indicative of a malicious link farm designed to lure users to potentially harmful sites.
Machine Learning
- Nyx PDF Classifier malicious score 0.9973
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://ketchas.ru/uplcv?utm_term=where+to+download+pinoy+movies+using+utorrent
- http://soeurs-scjboran.fr/soeurs/upload/files/wokekevewegabisikus.pdf
- https://bushregenerators.net/userfiles/files/sitekalabidukagi.pdf
- http://studiomarcheluzzo.it/userfiles/files/roselotaj.pdf
- http://eca.or.th/ckfinder/userfiles/files/darobamunimepuratuw.pdf
- http://wmasgroup.com/userfiles/file/dodolavozanosutivotu.pdf
- https://apteka-wratislavia.pl/halatecza/userfiles/file/98604338510.pdf
- http://wcsps.com.tw/ckfinder/userfiles/files/zumatujunujorokidatik.pdf
- http://f-kcc.jp/user_data/userfiles/files/gamox.pdf
- http://pincailight.com/zk/UploadFile/file/2021090604573773499.pdf
- http://mariamozharova.ru/uploads/files/29935525824.pdf
- http://montpellier-businessplan.eu/mbp/upload/images/images/upload/ckfinder/94419236513.pdf
- https://duhocblueocean.vn/ckfinder/userfiles/files/59711746641.pdf
- http://immopolignano.lu/images/tikadojodagitixepopow.pdf
- https://swotin.com/wp-content/plugins/formcraft/file-upload/server/content/files/16131447c5780e---lasewevuvedadaru.pdf
- http://lichnyiybrand.ru/wp-content/plugins/formcraft/file-upload/server/content/files/1614990015ff5b---74159942551.pdf
- http://notar-frings.de/userfiles/file/gozirozeloxu.pdf
- https://cailux.lu/userfiles/files/20876751289.pdf
- https://www.golddustdental.com/wp-content/plugins/formcraft/file-upload/server/content/files/161457e2a43527---benijowopula.pdf
- https://www.northamericatalk.com/wp-content/plugins/formcraft/file-upload/server/content/files/16135ce4e54e72---juvasolutofovad.pdf
- http://bettynblue.com/upload/fck_img/20210914/file/1898848599.pdf
- https://net-mex.hu/ckfinder/userfiles/files/piwekap.pdf
- https://mobspace.xyz/web/img/podborky/files/mulujiredu.pdf
- https://qualitycountscleaning.com/wp-content/plugins/super-forms/uploads/php/files/ca46437ae34c6238f0fbf82aa4203e6f/kiwit.pdf
- https://vhcvietnam.vn/ckeditor/images/files/66695650966.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_off0000c468.binfd51674f91c79b2b619a055d9d955f322b9d5bcb9f405180511ae2c1d195d045 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xC468 | 17364 bytes |
font_01_sfnt_off0000f14e.bin2a6fec4e0d608959ebd997e22e11f48e717a9752065c8deb094dfffe100d5417 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF14E | 11196 bytes |
font_02_sfnt_off00010b2c.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10B2C | 16792 bytes |
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