MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains numerous links to external websites, many hosted on compromised CMS platforms or disposable domains, suggesting a link farm designed to redirect users to malicious content. The document body is heavily obfuscated and appears to be generated by wkhtmltopdf, providing no direct user-facing lure but reinforcing the nature of the embedded links.
Machine Learning
- Nyx PDF Classifier malicious score 0.9784
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://pistant.ru/uplcv?utm_term=best+romance+comedy+action+anime
- https://samsungvrvklima.com/upload/ckfinder/files/80245125212.pdf
- https://www.darrellstuckey.com/wp-content/plugins/formcraft/file-upload/server/content/files/16084cf427a26e---58191165720.pdf
- https://makeswebsites.com/clients/c/c8/c8c605999f3d8352d7bb792cf3fdb25b/File/suvikirilega.pdf
- http://zhouzhuank.com/v15/Upload/file/20216212233467863.pdf
- http://dansecyr.ca/pdf/file/mavupejitin.pdf
- http://ahs1978hounds.com/clients/0/09/09313dc2b2b2138818c22350edca9cf7/File/figumowegokewozawona.pdf
- https://luminex.pl/upload/file/66449174625.pdf
- http://donateagift.eu/userfiles/file/37470089925.pdf
- https://cottingham-group.com/cufiles/files/99253801098.pdf
- https://www.davinci.dk/wp-content/plugins/formcraft/file-upload/server/content/files/16075cb89f3748---posakad.pdf
- https://szaktel.hu/uploads/file/9633481812.pdf
- http://teechart.com/uploads/images/files/fukenub.pdf
- http://oryginalnedekoracje.pl/userfiles/file/tepakuduzebe.pdf
- https://kindliving.org/wp-content/plugins/super-forms/uploads/php/files/tmp/82676508541.pdf
- http://golden-candies.ru/webroot/files/files/92601697846.pdf
- http://asesoriagarpe.com/wp-content/plugins/formcraft/file-upload/server/content/files/16078d1a3d40e9---voruwulatareno.pdf
- https://bompentax.com/quangbasanpham/app/webroot/upload/image/files/93768794982.pdf
- http://patroha.hu/file/72107374030.pdf
- https://2greenchicks.com/wp-content/plugins/super-forms/uploads/php/files/7bffb5899bd433de7653bd51d7872c5a/fewip.pdf
- https://psychologgia.pl/Upload/file/96298913155.pdf
- https://deedpoll.sg/wp-content/plugins/super-forms/uploads/php/files/fcc8846194fe2a06ad50ea28e0989bc1/sikopebibobosiwiz.pdf
- https://www.movingwithmagna.com/wp-content/plugins/super-forms/uploads/php/files/0bb02ee02f5d3c396672330768f395ea/77799426304.pdf
- https://nuevocoach.co.uk/wp-content/plugins/super-forms/uploads/php/files/5e0186eb75edbced83085120c84c9066/wuzefasofeli.pdf
- http://www.gunyagder.org.tr/wp-content/plugins/super-forms/uploads/php/files/l57f417qah470d6hu8evsfm4o0/22197347146.pdf
- https://diversifiedhumansolutions.com/wp-content/plugins/super-forms/uploads/php/files/fbf2d3cfc1f467aaff373886224d3597/34748200439.pdf
- https://www.idahomedia.com/wp-content/plugins/super-forms/uploads/php/files/b53787021283be65edc14dea7385e3f7/xogejoduzuwuwuwuduletom.pdf
- https://www.rogierstoel.nl/wp-content/plugins/super-forms/uploads/php/files/lioj4862ils2urnu7hpphkht3r/66649106297.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_off000126c0.binb069d5500500bbb110e12b11e3a2c83118ea1abcabf4288c8987c8dd6803312c |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x126C0 | 10652 bytes |
font_01_sfnt_off00013f3c.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x13F3C | 16792 bytes |
font_02_sfnt_off0001574e.binff41e08bf364d5339af82cf787cfd8574c35c179bc76a6b9954ea5e9b112fb6a |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1574E | 16884 bytes |
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