MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
This PDF file was identified as malicious by ML classifiers and ClamAV, specifically as a phishing trojan. It functions as a link farm, containing numerous URLs that point to compromised WordPress upload directories, likely serving as a distribution point for further malicious content. The presence of these links suggests an attempt to lure users into downloading additional payloads or visiting phishing sites.
Machine Learning
- Nyx PDF Classifier malicious score 0.9985
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 http://www.kliningstroy.ru/wp-content/plugins/formcraft/file-upload/server/content/files/16091c1a13bd97---98471379164.pdf
- http://www.olympussverige.se/wp-content/plugins/super-forms/uploads/php/files/8a1h4d4kf02kc69ab9mu9o1cuj/59748506539.pdf
- https://cargotavio.ru/files/file/tewoleture.pdf
- https://dedywiredja.com/wp-content/plugins/formcraft/file-upload/server/content/files/160fdb11c44c64---2133069732.pdf
- http://plusbateria.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608cc953358b7---wagotej.pdf
- http://jncs.kr/page_data/file/20210705065026.pdf
- http://thehonourride.ca/clients/c/c2/c2a221447f3e921143a55eca482c8289/File/31587610340.pdf
- http://aokisuper.com/ckfinder/userfiles/files/zomarodiremimojisexibubot.pdf
- https://mziagroup.com/wp-content/plugins/super-forms/uploads/php/files/s82d7jaergv1tfdl6mpipqqipi/nodimejojifexije.pdf
- http://fairbank-ia.org/admin/ckfinder/userfiles/files/33236918185.pdf
- http://portalkucharski.pl/app/webroot/media/files/61529048920.pdf
- https://dezsredstvompx.ru/wp-content/plugins/super-forms/uploads/php/files/d515536de61eeb732f9621da745d31a7/robepijotitopupa.pdf
- https://fitnessrev.net/wp-content/plugins/super-forms/uploads/php/files/nnqf0nu12hsu3fkegscq2shmoa/57440018865.pdf
- http://calzaturificiocatia.it/userfiles/files/lutunulitaramabin.pdf
- https://www.carlosfunes.es/wp-content/plugins/formcraft/file-upload/server/content/files/1609747ef64d39---torutakineju.pdf
- http://canadanur.com/resimler/files/pevemu.pdf
- https://vicotelecom.vn/static/source/images/file/65044488396.pdf
- http://plenar.hr/wp-content/plugins/formcraft/file-upload/server/content/files/160c04bbeb4ef9---naxudipapoxufegu.pdf
- https://best-turbos.com/wp-content/plugins/super-forms/uploads/php/files/c12d3892ea8aa7d2855f3cbdc862ce30/37488836829.pdf
- http://www.appsolutely.sg/wp-content/plugins/formcraft/file-upload/server/content/files/160e675f968702---90904473889.pdf
- http://www.everhouse.lt/wp-content/plugins/formcraft/file-upload/server/content/files/160bbbac086fdc---xewefetozonadivibez.pdf
- http://jerseybankruptcylaw.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/zuvovixamivi.pdf
- http://www.patricktennis.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160c3c3d980fe8---46693070283.pdf
- https://0900107678.com/upload/file/basupo.pdf
- https://feedproxy.google.com/~r/skout/mBVl/~3/3CAf4wW3hvY/uplcv?utm_term=did+not+pass+probation+period+letter
- 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_off0000fb59.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xFB59 | 16792 bytes |
font_01_sfnt_off0001136b.binc64a1fdcaa8bf87cc5fba68dc6dba29812f539190f011c8557f5aaf4c6fceb3c |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1136B | 16448 bytes |
font_02_sfnt_off00013e3b.bina344cdbc97c3d27688090be15b2ac585e10310146f63c80aa630bcbfe603d8fb |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x13E3B | 10524 bytes |
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