MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The sample was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains numerous external links, many pointing to compromised WordPress sites or disposable hosting, suggesting a link farm designed to redirect users to malicious content. The PDF structure itself appears to be a lure, with the primary goal being to drive traffic to these external URLs.
Machine Learning
- Nyx PDF Classifier malicious score 0.9978
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://laborke.ru/uplcv?utm_term=volume+scheduler+android
- http://yingtailong.com/upload/file/210901123834905258oyx49sfdtkr5.pdf
- http://masterkontroll.hu/ckfinder/userfiles/files/finijarabugusarafepu.pdf
- https://divorcioconsensual.com.br/wp-content/plugins/super-forms/uploads/php/files/32ca1f37c4ef490f79937e2b740d753f/30094431899.pdf
- https://www.hospedeagora.com.br/wp-content/plugins/super-forms/uploads/php/files/s48n1u424b2nlc578lltvpubhb/96147928267.pdf
- https://mi-stores.com/basketballtotaal/images/editor/file/bipazafu.pdf
- http://bloemenwinkelindex.nl/images/uploads/xutirebuwizamoruwasu.pdf
- http://evopizza.lt/ckfinder/userfiles/files/fanirevewomerinedozeveme.pdf
- https://k-kompany.ru/wp-content/plugins/super-forms/uploads/php/files/beca366c11988fa9ca3f5c3f46f5f0cf/wogatevudo.pdf
- http://allier-genealogie.org/File:/jamuzevokubupefamasi.pdf
- http://keyflounge.nl/userfiles/file/9901385391.pdf
- http://bluecars.pl/userfiles/file/49663896395.pdf
- https://qigoodteam.com/uploads/files/202109011254526150.pdf
- http://adabaskimerkezi.com/upload/file/resenazudetipimafun.pdf
- http://careerhack.net/wp-content/plugins/formcraft/file-upload/server/content/files/161340335dd443---95858944444.pdf
- http://hatowo.com/app/webroot/uploads/files/fotuvinozujukizizikogupev.pdf
- http://de.ruben.pl/ckfinder/userfiles/files/76878985701.pdf
- http://reclaimsplus.com/wp-content/plugins/super-forms/uploads/php/files/d70749d7d00a056dbc0a4ea26fa4bd48/21075606426.pdf
- https://rowadalbyt.com/userfiles/files/zujapasudaduzewesu.pdf
- http://svs-pm.com/wp-content/plugins/formcraft/file-upload/server/content/files/161329fc19f7c6---fujozokawidabogoberokuliv.pdf
- https://lotusmarinevn.com/upload/files/51523856733.pdf
- http://longruiglass.com/ckfinder/userfiles/files/20210914_121222.pdf
- https://plentis.eu/ckfinder/userfiles/files/lulegosetibid.pdf
- http://lnianemarzenie.pl/userfiles/file/bidukememu.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_off0000b80e.binb7d52879558e202fa7703433d59166587774832732fb147151a2f2b22558a507 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xB80E | 10608 bytes |
font_01_sfnt_off0000d012.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD012 | 16792 bytes |
font_02_sfnt_off0000e824.bina0e735a9049db7136244cec8ea3a1ee63d751b75855f5667c74abf3a697933eb |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE824 | 15704 bytes |
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