MALICIOUS
196
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
This PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. It contains numerous embedded URLs that point to compromised websites and disposable hosting, indicating a link farm designed to redirect users to malicious content. The presence of 'utm_term' parameters suggests an attempt to track user engagement with these lures.
Machine Learning
- Nyx PDF Classifier malicious score 0.9963
Heuristics 7
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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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LOLBin token sequence in document text high SE_LOLBIN_RUN_COMMANDExtracted document text contains a Windows script/execution tool name (PowerShell, mshta, cmd, rundll32, regsvr32, …) within 220 characters of a dangerous flag, command verb, or URL. This is a visible 'run this' instruction in HTML/PDF/RTF lure bodies, or — in macro-laden Office files — the macro's own string-pool entries appearing adjacent in extracted text.
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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://synerhu.ru/uplcv?utm_term=which+is+best+video+calling+app+for+android
- https://www.actionconstructionjax.com/wp-content/plugins/super-forms/uploads/php/files/303c24cf560ae32e0531d467c1d18c75/22269807333.pdf
- http://pronobile.com/catalog/file/busuvupoj.pdf
- http://vnos.vn/app/webroot/uploads/files/pofigolumenulolen.pdf
- http://www.deadclan.nl/wp-content/plugins/formcraft/file-upload/server/content/files/161341c47e5eb7---15654818015.pdf
- http://tauben-buchmeier.de/kleinberliner-schuetzen/userfiles/files/tigikesewaravojafopixakev.pdf
- https://www.notusweb.com.br/ckeditor/ckfinder/userfiles/files/tewawususozepinagoket.pdf
- http://studiosiriosrl.it/userfiles/files/75063025795.pdf
- http://olympicburger1988.com/uploads/files/puduziraronuxopojugekuzi.pdf
- http://chono.mn/uploads/userfiles/files/43779736230.pdf
- http://pocatellocampfire.com/wp-content/plugins/super-forms/uploads/php/files/aesit0telqjirf8cmdue50ftsv/puvizepodaxanexa.pdf
- http://abarappresentanze.it/userfiles/files/90480912270.pdf
- http://www.insurancedirectcanada.ca/wp-content/plugins/formcraft/file-upload/server/content/files/16137c22886f78---750257260.pdf
- http://gonzagafood.com/userfiles/files/setapuvabu.pdf
- https://invest.pl/userfiles/file/69876097786.pdf
- http://xn--vb0b83rba554gca.kr/page_data/file/20210905175028.pdf
- https://tapetcenter.ro/app/webroot/files/userfiles/files/xuzubilo.pdf
- http://dental-forum.ru/userfiles/file/34345522112.pdf
- http://expertcomptablecourreges.fr/michel_courreges/userfiles/file/6600542713.pdf
- http://musorcentrum.hu/files/article/file/6724491070.pdf
- https://nicemexico.net/wp-content/plugins/formcraft/file-upload/server/content/files/1612fe7d672bce---dakujubikazonu.pdf
- http://pyramidplaster.com/file_media/file_image/file/pinejozuxod.pdf
- http://zekejozsef.eu/FCKfeltoltott/file/58434672642.pdf
- http://abarappresentanze.it
- 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_off0000c596.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xC596 | 16792 bytes |
font_01_sfnt_off0000dda8.bincbc66a806aa5482659375d5589a7d56137ef7b1b3ab7b9825894ed9d31ec7d3f |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDDA8 | 16576 bytes |
font_02_sfnt_off00010839.bind9609aa1818edf6cc49d204e0902cccfe68a5c611c70badbdba53d644d89446f |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10839 | 11100 bytes |
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